BAEL-3091: The Prototype Pattern in Java (changed code based on valid comments from a reader)

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/HibernateUtil.java

@@ -0,0 +1,145 @@
+package com.baeldung.hibernate;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.net.URL;
+import java.util.Properties;
+
+import org.apache.commons.lang3.StringUtils;
+import org.hibernate.SessionFactory;
+import org.hibernate.boot.Metadata;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.service.ServiceRegistry;
+
+import com.baeldung.hibernate.customtypes.LocalDateStringType;
+import com.baeldung.hibernate.customtypes.OfficeEmployee;
+import com.baeldung.hibernate.entities.DeptEmployee;
+import com.baeldung.hibernate.joincolumn.Email;
+import com.baeldung.hibernate.joincolumn.Office;
+import com.baeldung.hibernate.joincolumn.OfficeAddress;
+import com.baeldung.hibernate.optimisticlocking.OptimisticLockingCourse;
+import com.baeldung.hibernate.optimisticlocking.OptimisticLockingStudent;
+import com.baeldung.hibernate.pessimisticlocking.Individual;
+import com.baeldung.hibernate.pessimisticlocking.PessimisticLockingCourse;
+import com.baeldung.hibernate.pessimisticlocking.PessimisticLockingEmployee;
+import com.baeldung.hibernate.pessimisticlocking.PessimisticLockingStudent;
+import com.baeldung.hibernate.pojo.Course;
+import com.baeldung.hibernate.pojo.Employee;
+import com.baeldung.hibernate.pojo.EntityDescription;
+import com.baeldung.hibernate.pojo.OrderEntry;
+import com.baeldung.hibernate.pojo.OrderEntryIdClass;
+import com.baeldung.hibernate.pojo.OrderEntryPK;
+import com.baeldung.hibernate.pojo.Person;
+import com.baeldung.hibernate.pojo.Phone;
+import com.baeldung.hibernate.pojo.PointEntity;
+import com.baeldung.hibernate.pojo.PolygonEntity;
+import com.baeldung.hibernate.pojo.Post;
+import com.baeldung.hibernate.pojo.Product;
+import com.baeldung.hibernate.pojo.Student;
+import com.baeldung.hibernate.pojo.TemporalValues;
+import com.baeldung.hibernate.pojo.User;
+import com.baeldung.hibernate.pojo.UserProfile;
+import com.baeldung.hibernate.pojo.inheritance.Animal;
+import com.baeldung.hibernate.pojo.inheritance.Bag;
+import com.baeldung.hibernate.pojo.inheritance.Book;
+import com.baeldung.hibernate.pojo.inheritance.Car;
+import com.baeldung.hibernate.pojo.inheritance.MyEmployee;
+import com.baeldung.hibernate.pojo.inheritance.MyProduct;
+import com.baeldung.hibernate.pojo.inheritance.Pen;
+import com.baeldung.hibernate.pojo.inheritance.Pet;
+import com.baeldung.hibernate.pojo.inheritance.Vehicle;
+
+public class HibernateUtil {
+    private static String PROPERTY_FILE_NAME;
+
+    public static SessionFactory getSessionFactory() throws IOException {
+        return getSessionFactory(null);
+    }
+
+    public static SessionFactory getSessionFactory(String propertyFileName) throws IOException {
+        PROPERTY_FILE_NAME = propertyFileName;
+        ServiceRegistry serviceRegistry = configureServiceRegistry();
+        return makeSessionFactory(serviceRegistry);
+    }
+
+    public static SessionFactory getSessionFactoryByProperties(Properties properties) throws IOException {
+        ServiceRegistry serviceRegistry = configureServiceRegistry(properties);
+        return makeSessionFactory(serviceRegistry);
+    }
+
+    private static SessionFactory makeSessionFactory(ServiceRegistry serviceRegistry) {
+        MetadataSources metadataSources = new MetadataSources(serviceRegistry);
+
+        metadataSources.addPackage("com.baeldung.hibernate.pojo");
+        metadataSources.addAnnotatedClass(Employee.class);
+        metadataSources.addAnnotatedClass(Phone.class);
+        metadataSources.addAnnotatedClass(EntityDescription.class);
+        metadataSources.addAnnotatedClass(TemporalValues.class);
+        metadataSources.addAnnotatedClass(User.class);
+        metadataSources.addAnnotatedClass(Student.class);
+        metadataSources.addAnnotatedClass(Course.class);
+        metadataSources.addAnnotatedClass(Product.class);
+        metadataSources.addAnnotatedClass(OrderEntryPK.class);
+        metadataSources.addAnnotatedClass(OrderEntry.class);
+        metadataSources.addAnnotatedClass(OrderEntryIdClass.class);
+        metadataSources.addAnnotatedClass(UserProfile.class);
+        metadataSources.addAnnotatedClass(Book.class);
+        metadataSources.addAnnotatedClass(MyEmployee.class);
+        metadataSources.addAnnotatedClass(MyProduct.class);
+        metadataSources.addAnnotatedClass(Pen.class);
+        metadataSources.addAnnotatedClass(Person.class);
+        metadataSources.addAnnotatedClass(Animal.class);
+        metadataSources.addAnnotatedClass(Pet.class);
+        metadataSources.addAnnotatedClass(Vehicle.class);
+        metadataSources.addAnnotatedClass(Car.class);
+        metadataSources.addAnnotatedClass(Bag.class);
+        metadataSources.addAnnotatedClass(PointEntity.class);
+        metadataSources.addAnnotatedClass(PolygonEntity.class);
+        metadataSources.addAnnotatedClass(com.baeldung.hibernate.pojo.Person.class);
+        metadataSources.addAnnotatedClass(Individual.class);
+        metadataSources.addAnnotatedClass(PessimisticLockingEmployee.class);
+        metadataSources.addAnnotatedClass(PessimisticLockingStudent.class);
+        metadataSources.addAnnotatedClass(PessimisticLockingCourse.class);
+        metadataSources.addAnnotatedClass(com.baeldung.hibernate.pessimisticlocking.Customer.class);
+        metadataSources.addAnnotatedClass(com.baeldung.hibernate.pessimisticlocking.Address.class);
+        metadataSources.addAnnotatedClass(DeptEmployee.class);
+        metadataSources.addAnnotatedClass(com.baeldung.hibernate.entities.Department.class);
+        metadataSources.addAnnotatedClass(OptimisticLockingCourse.class);
+        metadataSources.addAnnotatedClass(OptimisticLockingStudent.class);
+        metadataSources.addAnnotatedClass(OfficeEmployee.class);
+        metadataSources.addAnnotatedClass(Post.class);
+        metadataSources.addAnnotatedClass(com.baeldung.hibernate.joincolumn.OfficialEmployee.class);
+        metadataSources.addAnnotatedClass(Email.class);
+        metadataSources.addAnnotatedClass(Office.class);
+        metadataSources.addAnnotatedClass(OfficeAddress.class);
+
+        Metadata metadata = metadataSources.getMetadataBuilder()
+                .applyBasicType(LocalDateStringType.INSTANCE)
+                .build();
+
+        return metadata.getSessionFactoryBuilder()
+                .build();
+
+    }
+
+    private static ServiceRegistry configureServiceRegistry() throws IOException {
+        return configureServiceRegistry(getProperties());
+    }
+
+    private static ServiceRegistry configureServiceRegistry(Properties properties) throws IOException {
+        return new StandardServiceRegistryBuilder().applySettings(properties)
+                .build();
+    }
+
+    public static Properties getProperties() throws IOException {
+        Properties properties = new Properties();
+        URL propertiesURL = Thread.currentThread()
+          .getContextClassLoader()
+          .getResource(StringUtils.defaultString(PROPERTY_FILE_NAME, "hibernate.properties"));
+        try (FileInputStream inputStream = new FileInputStream(propertiesURL.getFile())) {
+            properties.load(inputStream);
+        }
+        return properties;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/UnsupportedTenancyException.java

@@ -0,0 +1,8 @@
+package com.baeldung.hibernate;
+
+public class UnsupportedTenancyException extends Exception {
+    public UnsupportedTenancyException (String message) {
+        super(message);
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/converters/PersonNameConverter.java

@@ -0,0 +1,61 @@
+package com.baeldung.hibernate.converters;
+
+import javax.persistence.AttributeConverter;
+import javax.persistence.Converter;
+
+import com.baeldung.hibernate.pojo.PersonName;
+
+@Converter
+public class PersonNameConverter implements AttributeConverter<PersonName, String> {
+
+    private static final String SEPARATOR = ", ";
+
+    @Override
+    public String convertToDatabaseColumn(PersonName personName) {
+        if (personName == null) {
+            return null;
+        }
+
+        StringBuilder sb = new StringBuilder();
+        if (personName.getSurname() != null && !personName.getSurname()
+            .isEmpty()) {
+            sb.append(personName.getSurname());
+            sb.append(SEPARATOR);
+        }
+
+        if (personName.getName() != null && !personName.getName()
+            .isEmpty()) {
+            sb.append(personName.getName());
+        }
+
+        return sb.toString();
+    }
+
+    @Override
+    public PersonName convertToEntityAttribute(String dbPersonName) {
+        if (dbPersonName == null || dbPersonName.isEmpty()) {
+            return null;
+        }
+
+        String[] pieces = dbPersonName.split(SEPARATOR);
+
+        if (pieces == null || pieces.length == 0) {
+            return null;
+        }
+
+        PersonName personName = new PersonName();        
+        String firstPiece = !pieces[0].isEmpty() ? pieces[0] : null;
+        if (dbPersonName.contains(SEPARATOR)) {
+            personName.setSurname(firstPiece);
+
+            if (pieces.length >= 2 && pieces[1] != null && !pieces[1].isEmpty()) {
+                personName.setName(pieces[1]);
+            }
+        } else {
+            personName.setName(firstPiece);
+        }
+
+        return personName;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/criteriaquery/HibernateUtil.java

@@ -0,0 +1,60 @@
+package com.baeldung.hibernate.criteriaquery;
+
+import com.baeldung.hibernate.customtypes.LocalDateStringType;
+import org.hibernate.SessionFactory;
+import org.hibernate.boot.Metadata;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.service.ServiceRegistry;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.net.URL;
+import java.util.Properties;
+
+public class HibernateUtil {
+    private static SessionFactory sessionFactory;
+
+    private HibernateUtil() {
+    }
+
+    public static SessionFactory getSessionFactory() {
+        if (sessionFactory == null) {
+            sessionFactory = buildSessionFactory();
+        }
+        return sessionFactory;
+    }
+
+    private static SessionFactory buildSessionFactory() {
+        try {
+            ServiceRegistry serviceRegistry = configureServiceRegistry();
+
+            MetadataSources metadataSources = new MetadataSources(serviceRegistry);
+
+            metadataSources.addAnnotatedClass(Student.class);
+            Metadata metadata = metadataSources.getMetadataBuilder()
+                    .applyBasicType(LocalDateStringType.INSTANCE)
+                    .build();
+            return metadata.getSessionFactoryBuilder().build();
+        } catch (IOException ex) {
+            throw new ExceptionInInitializerError(ex);
+        }
+    }
+
+
+    private static ServiceRegistry configureServiceRegistry() throws IOException {
+        Properties properties = getProperties();
+        return new StandardServiceRegistryBuilder().applySettings(properties).build();
+    }
+
+    private static Properties getProperties() throws IOException {
+        Properties properties = new Properties();
+        URL propertiesURL = Thread.currentThread()
+                .getContextClassLoader()
+                .getResource("hibernate.properties");
+        try (FileInputStream inputStream = new FileInputStream(propertiesURL.getFile())) {
+            properties.load(inputStream);
+        }
+        return properties;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/criteriaquery/Student.java

@@ -0,0 +1,58 @@
+package com.baeldung.hibernate.criteriaquery;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "students")
+public class Student {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private int id;
+
+    @Column(name = "first_name")
+    private String firstName;
+
+    @Column(name = "last_name")
+    private String lastName;
+
+    @Column(name = "grad_year")
+    private int gradYear;
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public int getGradYear() {
+        return gradYear;
+    }
+
+    public void setGradYear(int gradYear) {
+        this.gradYear = gradYear;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/customtypes/Address.java

@@ -0,0 +1,69 @@
+package com.baeldung.hibernate.customtypes;
+
+import java.util.Objects;
+
+public class Address {
+
+    private String addressLine1;
+    private String addressLine2;
+    private String city;
+    private String country;
+    private int zipCode;
+
+    public String getAddressLine1() {
+        return addressLine1;
+    }
+
+    public String getAddressLine2() {
+        return addressLine2;
+    }
+
+    public String getCity() {
+        return city;
+    }
+
+    public String getCountry() {
+        return country;
+    }
+
+    public int getZipCode() {
+        return zipCode;
+    }
+
+    public void setAddressLine1(String addressLine1) {
+        this.addressLine1 = addressLine1;
+    }
+
+    public void setAddressLine2(String addressLine2) {
+        this.addressLine2 = addressLine2;
+    }
+
+    public void setCity(String city) {
+        this.city = city;
+    }
+
+    public void setCountry(String country) {
+        this.country = country;
+    }
+
+    public void setZipCode(int zipCode) {
+        this.zipCode = zipCode;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Address address = (Address) o;
+        return zipCode == address.zipCode &&
+                Objects.equals(addressLine1, address.addressLine1) &&
+                Objects.equals(addressLine2, address.addressLine2) &&
+                Objects.equals(city, address.city) &&
+                Objects.equals(country, address.country);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(addressLine1, addressLine2, city, country, zipCode);
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/customtypes/AddressType.java

@@ -0,0 +1,169 @@
+package com.baeldung.hibernate.customtypes;
+
+import org.hibernate.HibernateException;
+import org.hibernate.engine.spi.SharedSessionContractImplementor;
+import org.hibernate.type.IntegerType;
+import org.hibernate.type.StringType;
+import org.hibernate.type.Type;
+import org.hibernate.usertype.CompositeUserType;
+
+import java.io.Serializable;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Types;
+import java.util.Objects;
+
+public class AddressType implements CompositeUserType {
+
+    @Override
+    public String[] getPropertyNames() {
+        return new String[]{"addressLine1", "addressLine2",
+                "city", "country", "zipcode"};
+    }
+
+    @Override
+    public Type[] getPropertyTypes() {
+        return new Type[]{StringType.INSTANCE, StringType.INSTANCE,
+                StringType.INSTANCE, StringType.INSTANCE, IntegerType.INSTANCE};
+    }
+
+    @Override
+    public Object getPropertyValue(Object component, int property) throws HibernateException {
+
+        Address empAdd = (Address) component;
+
+        switch (property) {
+            case 0:
+                return empAdd.getAddressLine1();
+            case 1:
+                return empAdd.getAddressLine2();
+            case 2:
+                return empAdd.getCity();
+            case 3:
+                return empAdd.getCountry();
+            case 4:
+                return Integer.valueOf(empAdd.getZipCode());
+        }
+
+        throw new IllegalArgumentException(property +
+                " is an invalid property index for class type " +
+                component.getClass().getName());
+    }
+
+    @Override
+    public void setPropertyValue(Object component, int property, Object value) throws HibernateException {
+
+        Address empAdd = (Address) component;
+
+        switch (property) {
+            case 0:
+                empAdd.setAddressLine1((String) value);
+            case 1:
+                empAdd.setAddressLine2((String) value);
+            case 2:
+                empAdd.setCity((String) value);
+            case 3:
+                empAdd.setCountry((String) value);
+            case 4:
+                empAdd.setZipCode((Integer) value);
+        }
+
+        throw new IllegalArgumentException(property +
+                " is an invalid property index for class type " +
+                component.getClass().getName());
+
+    }
+
+    @Override
+    public Class returnedClass() {
+        return Address.class;
+    }
+
+    @Override
+    public boolean equals(Object x, Object y) throws HibernateException {
+        if (x == y)
+            return true;
+
+        if (Objects.isNull(x) || Objects.isNull(y))
+            return false;
+
+        return x.equals(y);
+    }
+
+    @Override
+    public int hashCode(Object x) throws HibernateException {
+        return x.hashCode();
+    }
+
+    @Override
+    public Object nullSafeGet(ResultSet rs, String[] names, SharedSessionContractImplementor session, Object owner) throws HibernateException, SQLException {
+
+        Address empAdd = new Address();
+        empAdd.setAddressLine1(rs.getString(names[0]));
+
+        if (rs.wasNull())
+            return null;
+
+        empAdd.setAddressLine2(rs.getString(names[1]));
+        empAdd.setCity(rs.getString(names[2]));
+        empAdd.setCountry(rs.getString(names[3]));
+        empAdd.setZipCode(rs.getInt(names[4]));
+
+        return empAdd;
+    }
+
+    @Override
+    public void nullSafeSet(PreparedStatement st, Object value, int index, SharedSessionContractImplementor session) throws HibernateException, SQLException {
+
+        if (Objects.isNull(value))
+            st.setNull(index, Types.VARCHAR);
+        else {
+
+            Address empAdd = (Address) value;
+            st.setString(index, empAdd.getAddressLine1());
+            st.setString(index + 1, empAdd.getAddressLine2());
+            st.setString(index + 2, empAdd.getCity());
+            st.setString(index + 3, empAdd.getCountry());
+            st.setInt(index + 4, empAdd.getZipCode());
+        }
+    }
+
+    @Override
+    public Object deepCopy(Object value) throws HibernateException {
+
+        if (Objects.isNull(value))
+            return null;
+
+        Address oldEmpAdd = (Address) value;
+        Address newEmpAdd = new Address();
+
+        newEmpAdd.setAddressLine1(oldEmpAdd.getAddressLine1());
+        newEmpAdd.setAddressLine2(oldEmpAdd.getAddressLine2());
+        newEmpAdd.setCity(oldEmpAdd.getCity());
+        newEmpAdd.setCountry(oldEmpAdd.getCountry());
+        newEmpAdd.setZipCode(oldEmpAdd.getZipCode());
+
+        return newEmpAdd;
+    }
+
+    @Override
+    public boolean isMutable() {
+        return true;
+    }
+
+    @Override
+    public Serializable disassemble(Object value, SharedSessionContractImplementor session) throws HibernateException {
+        return (Serializable) deepCopy(value);
+    }
+
+    @Override
+    public Object assemble(Serializable cached, SharedSessionContractImplementor session, Object owner) throws HibernateException {
+        return deepCopy(cached);
+    }
+
+    @Override
+    public Object replace(Object original, Object target, SharedSessionContractImplementor session, Object owner) throws HibernateException {
+        return original;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/customtypes/LocalDateStringJavaDescriptor.java

@@ -0,0 +1,51 @@
+package com.baeldung.hibernate.customtypes;
+
+import org.hibernate.type.LocalDateType;
+import org.hibernate.type.descriptor.WrapperOptions;
+import org.hibernate.type.descriptor.java.AbstractTypeDescriptor;
+import org.hibernate.type.descriptor.java.ImmutableMutabilityPlan;
+import org.hibernate.type.descriptor.java.MutabilityPlan;
+
+import java.time.LocalDate;
+
+public class LocalDateStringJavaDescriptor extends AbstractTypeDescriptor<LocalDate> {
+
+    public static final LocalDateStringJavaDescriptor INSTANCE = new LocalDateStringJavaDescriptor();
+
+    public LocalDateStringJavaDescriptor() {
+        super(LocalDate.class, ImmutableMutabilityPlan.INSTANCE);
+    }
+
+    @Override
+    public String toString(LocalDate value) {
+        return LocalDateType.FORMATTER.format(value);
+    }
+
+    @Override
+    public LocalDate fromString(String string) {
+        return LocalDate.from(LocalDateType.FORMATTER.parse(string));
+    }
+
+    @Override
+    public <X> X unwrap(LocalDate value, Class<X> type, WrapperOptions options) {
+
+        if (value == null)
+            return null;
+
+        if (String.class.isAssignableFrom(type))
+            return (X) LocalDateType.FORMATTER.format(value);
+
+        throw unknownUnwrap(type);
+    }
+
+    @Override
+    public <X> LocalDate wrap(X value, WrapperOptions options) {
+        if (value == null)
+            return null;
+
+        if(String.class.isInstance(value))
+            return LocalDate.from(LocalDateType.FORMATTER.parse((CharSequence) value));
+
+        throw unknownWrap(value.getClass());
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/customtypes/LocalDateStringType.java

@@ -0,0 +1,34 @@
+package com.baeldung.hibernate.customtypes;
+
+import org.hibernate.dialect.Dialect;
+import org.hibernate.type.AbstractSingleColumnStandardBasicType;
+import org.hibernate.type.DiscriminatorType;
+import org.hibernate.type.descriptor.java.LocalDateJavaDescriptor;
+import org.hibernate.type.descriptor.sql.VarcharTypeDescriptor;
+
+import java.time.LocalDate;
+
+public class LocalDateStringType extends AbstractSingleColumnStandardBasicType<LocalDate> implements DiscriminatorType<LocalDate> {
+
+    public static final LocalDateStringType INSTANCE = new LocalDateStringType();
+
+    public LocalDateStringType() {
+        super(VarcharTypeDescriptor.INSTANCE, LocalDateStringJavaDescriptor.INSTANCE);
+    }
+
+    @Override
+    public String getName() {
+        return "LocalDateString";
+    }
+
+    @Override
+    public LocalDate stringToObject(String xml) throws Exception {
+        return fromString(xml);
+    }
+
+    @Override
+    public String objectToSQLString(LocalDate value, Dialect dialect) throws Exception {
+        return '\'' + toString(value) + '\'';
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/customtypes/OfficeEmployee.java

@@ -0,0 +1,88 @@
+package com.baeldung.hibernate.customtypes;
+
+import com.baeldung.hibernate.pojo.Phone;
+import org.hibernate.annotations.Columns;
+import org.hibernate.annotations.Parameter;
+import org.hibernate.annotations.Type;
+import org.hibernate.annotations.TypeDef;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.Table;
+import java.time.LocalDate;
+
+@TypeDef(name = "PhoneNumber",
+        typeClass = PhoneNumberType.class,
+        defaultForType = PhoneNumber.class)
+@Entity
+@Table(name = "OfficeEmployee")
+public class OfficeEmployee {
+
+    @Id
+    @GeneratedValue
+    private long id;
+
+    @Column
+    @Type(type = "LocalDateString")
+    private LocalDate dateOfJoining;
+
+    @Columns(columns = {@Column(name = "country_code"),
+            @Column(name = "city_code"),
+            @Column(name = "number")})
+    private PhoneNumber employeeNumber;
+
+    @Columns(columns = {@Column(name = "address_line_1"),
+            @Column(name = "address_line_2"),
+            @Column(name = "city"), @Column(name = "country"),
+            @Column(name = "zip_code")})
+    @Type(type = "com.baeldung.hibernate.customtypes.AddressType")
+    private Address empAddress;
+
+    @Type(type = "com.baeldung.hibernate.customtypes.SalaryType",
+            parameters = {@Parameter(name = "currency", value = "USD")})
+    @Columns(columns = {@Column(name = "amount"),
+            @Column(name = "currency")})
+    private Salary salary;
+
+    public Salary getSalary() {
+        return salary;
+    }
+
+    public void setSalary(Salary salary) {
+        this.salary = salary;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public LocalDate getDateOfJoining() {
+        return dateOfJoining;
+    }
+
+    public void setDateOfJoining(LocalDate dateOfJoining) {
+        this.dateOfJoining = dateOfJoining;
+    }
+
+    public PhoneNumber getEmployeeNumber() {
+        return employeeNumber;
+    }
+
+    public void setEmployeeNumber(PhoneNumber employeeNumber) {
+        this.employeeNumber = employeeNumber;
+    }
+
+    public Address getEmpAddress() {
+        return empAddress;
+    }
+
+    public void setEmpAddress(Address empAddress) {
+        this.empAddress = empAddress;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/customtypes/PhoneNumber.java

@@ -0,0 +1,43 @@
+package com.baeldung.hibernate.customtypes;
+
+import java.util.Objects;
+
+public final class PhoneNumber {
+
+    private final int countryCode;
+    private final int cityCode;
+    private final int number;
+
+    public PhoneNumber(int countryCode, int cityCode, int number) {
+        this.countryCode = countryCode;
+        this.cityCode = cityCode;
+        this.number = number;
+    }
+
+    public int getCountryCode() {
+        return countryCode;
+    }
+
+    public int getCityCode() {
+        return cityCode;
+    }
+
+    public int getNumber() {
+        return number;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        PhoneNumber that = (PhoneNumber) o;
+        return countryCode == that.countryCode &&
+                cityCode == that.cityCode &&
+                number == that.number;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(countryCode, cityCode, number);
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/customtypes/PhoneNumberType.java

@@ -0,0 +1,98 @@
+package com.baeldung.hibernate.customtypes;
+
+import org.hibernate.HibernateException;
+import org.hibernate.engine.spi.SharedSessionContractImplementor;
+import org.hibernate.usertype.UserType;
+
+import java.io.Serializable;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Types;
+import java.util.Objects;
+
+
+public class PhoneNumberType implements UserType {
+    @Override
+    public int[] sqlTypes() {
+        return new int[]{Types.INTEGER, Types.INTEGER, Types.INTEGER};
+    }
+
+    @Override
+    public Class returnedClass() {
+        return PhoneNumber.class;
+    }
+
+    @Override
+    public boolean equals(Object x, Object y) throws HibernateException {
+        if (x == y)
+            return true;
+        if (Objects.isNull(x) || Objects.isNull(y))
+            return false;
+
+        return x.equals(y);
+    }
+
+    @Override
+    public int hashCode(Object x) throws HibernateException {
+        return x.hashCode();
+    }
+
+    @Override
+    public Object nullSafeGet(ResultSet rs, String[] names, SharedSessionContractImplementor session, Object owner) throws HibernateException, SQLException {
+        int countryCode = rs.getInt(names[0]);
+
+        if (rs.wasNull())
+            return null;
+
+        int cityCode = rs.getInt(names[1]);
+        int number = rs.getInt(names[2]);
+        PhoneNumber employeeNumber = new PhoneNumber(countryCode, cityCode, number);
+
+        return employeeNumber;
+    }
+
+    @Override
+    public void nullSafeSet(PreparedStatement st, Object value, int index, SharedSessionContractImplementor session) throws HibernateException, SQLException {
+
+        if (Objects.isNull(value)) {
+            st.setNull(index, Types.INTEGER);
+        } else {
+            PhoneNumber employeeNumber = (PhoneNumber) value;
+            st.setInt(index,employeeNumber.getCountryCode());
+            st.setInt(index+1,employeeNumber.getCityCode());
+            st.setInt(index+2,employeeNumber.getNumber());
+        }
+    }
+
+    @Override
+    public Object deepCopy(Object value) throws HibernateException {
+        if (Objects.isNull(value))
+            return null;
+
+        PhoneNumber empNumber = (PhoneNumber) value;
+        PhoneNumber newEmpNumber = new PhoneNumber(empNumber.getCountryCode(),empNumber.getCityCode(),empNumber.getNumber());
+
+        return newEmpNumber;
+    }
+
+    @Override
+    public boolean isMutable() {
+        return false;
+    }
+
+    @Override
+    public Serializable disassemble(Object value) throws HibernateException {
+        return (Serializable) value;
+    }
+
+    @Override
+    public Object assemble(Serializable cached, Object owner) throws HibernateException {
+        return cached;
+    }
+
+    @Override
+    public Object replace(Object original, Object target, Object owner) throws HibernateException {
+        return original;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/customtypes/Salary.java

@@ -0,0 +1,39 @@
+package com.baeldung.hibernate.customtypes;
+
+import java.util.Objects;
+
+public class Salary {
+
+    private Long amount;
+    private String currency;
+
+    public Long getAmount() {
+        return amount;
+    }
+
+    public void setAmount(Long amount) {
+        this.amount = amount;
+    }
+
+    public String getCurrency() {
+        return currency;
+    }
+
+    public void setCurrency(String currency) {
+        this.currency = currency;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Salary salary = (Salary) o;
+        return Objects.equals(amount, salary.amount) &&
+                Objects.equals(currency, salary.currency);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(amount, currency);
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/customtypes/SalaryCurrencyConvertor.java

@@ -0,0 +1,15 @@
+package com.baeldung.hibernate.customtypes;
+
+public class SalaryCurrencyConvertor {
+
+    public static Long convert(Long amount, String oldCurr, String newCurr){
+        if (newCurr.equalsIgnoreCase(oldCurr))
+            return amount;
+
+        return convertTo();
+    }
+
+    private static Long convertTo() {
+        return 10L;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/customtypes/SalaryType.java

@@ -0,0 +1,161 @@
+package com.baeldung.hibernate.customtypes;
+
+import org.hibernate.HibernateException;
+import org.hibernate.engine.spi.SharedSessionContractImplementor;
+import org.hibernate.type.LongType;
+import org.hibernate.type.StringType;
+import org.hibernate.type.Type;
+import org.hibernate.usertype.CompositeUserType;
+import org.hibernate.usertype.DynamicParameterizedType;
+
+import java.io.Serializable;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Types;
+import java.util.Objects;
+import java.util.Properties;
+
+public class SalaryType implements CompositeUserType, DynamicParameterizedType {
+
+    private String localCurrency;
+
+    @Override
+    public String[] getPropertyNames() {
+        return new String[]{"amount", "currency"};
+    }
+
+    @Override
+    public Type[] getPropertyTypes() {
+        return new Type[]{LongType.INSTANCE, StringType.INSTANCE};
+    }
+
+    @Override
+    public Object getPropertyValue(Object component, int property) throws HibernateException {
+
+        Salary salary = (Salary) component;
+
+        switch (property) {
+            case 0:
+                return salary.getAmount();
+            case 1:
+                return salary.getCurrency();
+        }
+
+        throw new IllegalArgumentException(property +
+                " is an invalid property index for class type " +
+                component.getClass().getName());
+
+    }
+
+
+    @Override
+    public void setPropertyValue(Object component, int property, Object value) throws HibernateException {
+
+        Salary salary = (Salary) component;
+
+        switch (property) {
+            case 0:
+                salary.setAmount((Long) value);
+            case 1:
+                salary.setCurrency((String) value);
+        }
+
+        throw new IllegalArgumentException(property +
+                " is an invalid property index for class type " +
+                component.getClass().getName());
+
+    }
+
+    @Override
+    public Class returnedClass() {
+        return Salary.class;
+    }
+
+    @Override
+    public boolean equals(Object x, Object y) throws HibernateException {
+
+        if (x == y)
+            return true;
+
+        if (Objects.isNull(x) || Objects.isNull(y))
+            return false;
+
+        return x.equals(y);
+
+    }
+
+    @Override
+    public int hashCode(Object x) throws HibernateException {
+        return x.hashCode();
+    }
+
+    @Override
+    public Object nullSafeGet(ResultSet rs, String[] names, SharedSessionContractImplementor session, Object owner) throws HibernateException, SQLException {
+
+        Salary salary = new Salary();
+        salary.setAmount(rs.getLong(names[0]));
+
+        if (rs.wasNull())
+            return null;
+
+        salary.setCurrency(rs.getString(names[1]));
+
+        return salary;
+    }
+
+    @Override
+    public void nullSafeSet(PreparedStatement st, Object value, int index, SharedSessionContractImplementor session) throws HibernateException, SQLException {
+
+
+        if (Objects.isNull(value))
+            st.setNull(index, Types.BIGINT);
+        else {
+
+            Salary salary = (Salary) value;
+            st.setLong(index, SalaryCurrencyConvertor.convert(salary.getAmount(),
+                    salary.getCurrency(), localCurrency));
+            st.setString(index + 1, salary.getCurrency());
+        }
+    }
+
+    @Override
+    public Object deepCopy(Object value) throws HibernateException {
+
+        if (Objects.isNull(value))
+            return null;
+
+        Salary oldSal = (Salary) value;
+        Salary newSal = new Salary();
+
+        newSal.setAmount(oldSal.getAmount());
+        newSal.setCurrency(oldSal.getCurrency());
+
+        return newSal;
+    }
+
+    @Override
+    public boolean isMutable() {
+        return true;
+    }
+
+    @Override
+    public Serializable disassemble(Object value, SharedSessionContractImplementor session) throws HibernateException {
+        return (Serializable) deepCopy(value);
+    }
+
+    @Override
+    public Object assemble(Serializable cached, SharedSessionContractImplementor session, Object owner) throws HibernateException {
+        return deepCopy(cached);
+    }
+
+    @Override
+    public Object replace(Object original, Object target, SharedSessionContractImplementor session, Object owner) throws HibernateException {
+        return original;
+    }
+
+    @Override
+    public void setParameterValues(Properties parameters) {
+        this.localCurrency = parameters.getProperty("currency");
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/entities/Department.java

@@ -0,0 +1,45 @@
+package com.baeldung.hibernate.entities;
+
+import java.util.List;
+
+import javax.persistence.*;
+
+@Entity
+public class Department {
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    private long id;
+
+    private String name;
+
+    @OneToMany(mappedBy="department")
+    private List<DeptEmployee> employees;
+
+    public Department(String name) {
+        this.name = name;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public List<DeptEmployee> getEmployees() {
+        return employees;
+    }
+
+    public void setEmployees(List<DeptEmployee> employees) {
+        this.employees = employees;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/entities/DeptEmployee.java

@@ -0,0 +1,83 @@
+package com.baeldung.hibernate.entities;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.ManyToOne;
+
+@org.hibernate.annotations.NamedQueries({ @org.hibernate.annotations.NamedQuery(name = "DeptEmployee_FindByEmployeeNumber", query = "from DeptEmployee where employeeNumber = :employeeNo"),
+        @org.hibernate.annotations.NamedQuery(name = "DeptEmployee_FindAllByDesgination", query = "from DeptEmployee where designation = :designation"),
+        @org.hibernate.annotations.NamedQuery(name = "DeptEmployee_UpdateEmployeeDepartment", query = "Update DeptEmployee set department = :newDepartment where employeeNumber = :employeeNo"),
+        @org.hibernate.annotations.NamedQuery(name = "DeptEmployee_FindAllByDepartment", query = "from DeptEmployee where department = :department", timeout = 1, fetchSize = 10) })
+@org.hibernate.annotations.NamedNativeQueries({ @org.hibernate.annotations.NamedNativeQuery(name = "DeptEmployee_FindByEmployeeName", query = "select * from deptemployee emp where name=:name", resultClass = DeptEmployee.class),
+        @org.hibernate.annotations.NamedNativeQuery(name = "DeptEmployee_UpdateEmployeeDesignation", query = "call UPDATE_EMPLOYEE_DESIGNATION(:employeeNumber, :newDesignation)", resultClass = DeptEmployee.class) })
+@Entity
+public class DeptEmployee {
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    private long id;
+
+    private String employeeNumber;
+
+    private String title;
+
+    private String name;
+
+    @ManyToOne
+    private Department department;
+
+    public DeptEmployee(String name, String employeeNumber, Department department) {
+        this.name = name;
+        this.employeeNumber = employeeNumber;
+        this.department = department;
+    }
+    
+    public DeptEmployee(String name, String employeeNumber, String title, Department department) {
+        super();
+        this.name = name;
+        this.employeeNumber = employeeNumber;
+        this.title = title;
+        this.department = department;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getEmployeeNumber() {
+        return employeeNumber;
+    }
+
+    public void setEmployeeNumber(String employeeNumber) {
+        this.employeeNumber = employeeNumber;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Department getDepartment() {
+        return department;
+    }
+
+    public void setDepartment(Department department) {
+        this.department = department;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/exception/EntityWithNoId.java

@@ -0,0 +1,16 @@
+package com.baeldung.hibernate.exception;
+
+import javax.persistence.Entity;
+
+@Entity
+public class EntityWithNoId {
+    private int id;
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/exception/HibernateUtil.java

@@ -0,0 +1,63 @@
+package com.baeldung.hibernate.exception;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.net.URL;
+import java.util.Properties;
+
+import org.apache.commons.lang3.StringUtils;
+import org.hibernate.SessionFactory;
+import org.hibernate.boot.Metadata;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.service.ServiceRegistry;
+
+public class HibernateUtil {
+    private static SessionFactory sessionFactory;
+    private static String PROPERTY_FILE_NAME;
+
+    public static SessionFactory getSessionFactory() throws IOException {
+        return getSessionFactory(null);
+    }
+
+    public static SessionFactory getSessionFactory(String propertyFileName)
+        throws IOException {
+        PROPERTY_FILE_NAME = propertyFileName;
+        if (sessionFactory == null) {
+            ServiceRegistry serviceRegistry = configureServiceRegistry();
+            sessionFactory = makeSessionFactory(serviceRegistry);
+        }
+        return sessionFactory;
+    }
+
+    private static SessionFactory makeSessionFactory(
+        ServiceRegistry serviceRegistry) {
+        MetadataSources metadataSources = new MetadataSources(serviceRegistry);
+        metadataSources.addAnnotatedClass(Product.class);
+        Metadata metadata = metadataSources.getMetadataBuilder()
+            .build();
+        return metadata.getSessionFactoryBuilder()
+            .build();
+
+    }
+
+    private static ServiceRegistry configureServiceRegistry()
+        throws IOException {
+        Properties properties = getProperties();
+        return new StandardServiceRegistryBuilder().applySettings(properties)
+            .build();
+    }
+
+    private static Properties getProperties() throws IOException {
+        Properties properties = new Properties();
+        URL propertiesURL = Thread.currentThread()
+            .getContextClassLoader()
+            .getResource(StringUtils.defaultString(PROPERTY_FILE_NAME,
+                "hibernate-exception.properties"));
+        try (FileInputStream inputStream = new FileInputStream(
+            propertiesURL.getFile())) {
+            properties.load(inputStream);
+        }
+        return properties;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/exception/Product.java

@@ -0,0 +1,40 @@
+package com.baeldung.hibernate.exception;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+
+@Entity
+public class Product {
+
+    private int id;
+    
+    private String name;
+    private String description;
+
+    @Id
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+    
+    @Column(nullable=false)
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/findall/FindAll.java

@@ -0,0 +1,35 @@
+package com.baeldung.hibernate.findall;
+
+import java.util.List;
+
+import javax.persistence.TypedQuery;
+import javax.persistence.criteria.CriteriaBuilder;
+import javax.persistence.criteria.CriteriaQuery;
+import javax.persistence.criteria.Root;
+
+import org.hibernate.Session;
+
+import com.baeldung.hibernate.pojo.Student;
+
+public class FindAll {
+
+    private Session session;
+
+    public FindAll(Session session) {
+        super();
+        this.session = session;
+    }
+
+    public List<Student> findAllWithJpql() {
+        return session.createQuery("SELECT a FROM Student a", Student.class).getResultList();
+    }
+
+    public List<Student> findAllWithCriteriaQuery() {
+        CriteriaBuilder cb = session.getCriteriaBuilder();
+        CriteriaQuery<Student> cq = cb.createQuery(Student.class);
+        Root<Student> rootEntry = cq.from(Student.class);
+        CriteriaQuery<Student> all = cq.select(rootEntry);
+        TypedQuery<Student> allQuery = session.createQuery(all);
+        return allQuery.getResultList();
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/interceptors/CustomInterceptor.java

@@ -0,0 +1,32 @@
+package com.baeldung.hibernate.interceptors;
+
+import java.io.Serializable;
+import java.util.Date;
+
+import org.hibernate.EmptyInterceptor;
+import org.hibernate.type.Type;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.baeldung.hibernate.interceptors.entity.User;
+
+public class CustomInterceptor extends EmptyInterceptor {
+    private static final Logger logger = LoggerFactory.getLogger(CustomInterceptor.class);
+
+    @Override
+    public boolean onSave(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types) {
+        if (entity instanceof User) {
+            logger.info(((User) entity).toString());
+        }
+        return super.onSave(entity, id, state, propertyNames, types);
+    }
+    
+    @Override
+    public boolean onFlushDirty(Object entity, Serializable id, Object[] currentState, Object [] previousState, String[] propertyNames, Type[] types) {
+        if (entity instanceof User) {
+            ((User) entity).setLastModified(new Date());
+            logger.info(((User) entity).toString());
+        }
+        return super.onFlushDirty(entity, id, currentState, previousState, propertyNames, types);
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/interceptors/CustomInterceptorImpl.java

@@ -0,0 +1,122 @@
+package com.baeldung.hibernate.interceptors;
+
+import java.io.Serializable;
+import java.util.Iterator;
+
+import org.hibernate.CallbackException;
+import org.hibernate.EntityMode;
+import org.hibernate.Interceptor;
+import org.hibernate.Transaction;
+import org.hibernate.type.Type;
+
+public class CustomInterceptorImpl implements Interceptor, Serializable {
+
+    @Override
+    public boolean onLoad(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types) throws CallbackException {
+        // TODO Auto-generated method stub
+        return false;
+    }
+
+    @Override
+    public boolean onFlushDirty(Object entity, Serializable id, Object[] currentState, Object[] previousState, String[] propertyNames, Type[] types) throws CallbackException {
+        // TODO Auto-generated method stub
+        return false;
+    }
+
+    @Override
+    public boolean onSave(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types) throws CallbackException {
+        // TODO Auto-generated method stub
+        return false;
+    }
+
+    @Override
+    public void onDelete(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types) throws CallbackException {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public void onCollectionRecreate(Object collection, Serializable key) throws CallbackException {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public void onCollectionRemove(Object collection, Serializable key) throws CallbackException {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public void onCollectionUpdate(Object collection, Serializable key) throws CallbackException {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public void preFlush(Iterator entities) throws CallbackException {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public void postFlush(Iterator entities) throws CallbackException {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public Boolean isTransient(Object entity) {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    @Override
+    public int[] findDirty(Object entity, Serializable id, Object[] currentState, Object[] previousState, String[] propertyNames, Type[] types) {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    @Override
+    public Object instantiate(String entityName, EntityMode entityMode, Serializable id) throws CallbackException {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    @Override
+    public String getEntityName(Object object) throws CallbackException {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    @Override
+    public Object getEntity(String entityName, Serializable id) throws CallbackException {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    @Override
+    public void afterTransactionBegin(Transaction tx) {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public void beforeTransactionCompletion(Transaction tx) {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public void afterTransactionCompletion(Transaction tx) {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public String onPrepareStatement(String sql) {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/interceptors/HibernateUtil.java

@@ -0,0 +1,79 @@
+package com.baeldung.hibernate.interceptors;
+
+import org.apache.commons.lang3.StringUtils;
+import org.hibernate.Interceptor;
+import org.hibernate.Session;
+import org.hibernate.SessionFactory;
+import org.hibernate.boot.Metadata;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.SessionFactoryBuilder;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.service.ServiceRegistry;
+
+import com.baeldung.hibernate.interceptors.entity.User;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.net.URL;
+import java.util.Properties;
+
+public class HibernateUtil {
+    private static SessionFactory sessionFactory;
+    private static String PROPERTY_FILE_NAME;
+
+    public static SessionFactory getSessionFactory() throws IOException {
+        return getSessionFactory(null);
+    }
+
+    public static SessionFactory getSessionFactory(String propertyFileName) throws IOException {
+        PROPERTY_FILE_NAME = propertyFileName;
+        if (sessionFactory == null) {
+            ServiceRegistry serviceRegistry = configureServiceRegistry();
+            sessionFactory = getSessionFactoryBuilder(serviceRegistry).build();
+        }
+        return sessionFactory;
+    }
+
+    public static SessionFactory getSessionFactoryWithInterceptor(String propertyFileName, Interceptor interceptor) throws IOException {
+        PROPERTY_FILE_NAME = propertyFileName;
+        if (sessionFactory == null) {
+            ServiceRegistry serviceRegistry = configureServiceRegistry();
+            sessionFactory = getSessionFactoryBuilder(serviceRegistry).applyInterceptor(interceptor)
+                .build();
+        }
+        return sessionFactory;
+    }
+
+    public static Session getSessionWithInterceptor(Interceptor interceptor) throws IOException {
+        return getSessionFactory().withOptions()
+            .interceptor(interceptor)
+            .openSession();
+    }
+
+    private static SessionFactoryBuilder getSessionFactoryBuilder(ServiceRegistry serviceRegistry) {
+        MetadataSources metadataSources = new MetadataSources(serviceRegistry);
+        metadataSources.addPackage("com.baeldung.hibernate.interceptors");
+        metadataSources.addAnnotatedClass(User.class);
+
+        Metadata metadata = metadataSources.buildMetadata();
+        return metadata.getSessionFactoryBuilder();
+
+    }
+
+    private static ServiceRegistry configureServiceRegistry() throws IOException {
+        Properties properties = getProperties();
+        return new StandardServiceRegistryBuilder().applySettings(properties)
+            .build();
+    }
+
+    private static Properties getProperties() throws IOException {
+        Properties properties = new Properties();
+        URL propertiesURL = Thread.currentThread()
+            .getContextClassLoader()
+            .getResource(StringUtils.defaultString(PROPERTY_FILE_NAME, "hibernate-interceptors.properties"));
+        try (FileInputStream inputStream = new FileInputStream(propertiesURL.getFile())) {
+            properties.load(inputStream);
+        }
+        return properties;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/interceptors/entity/User.java

@@ -0,0 +1,64 @@
+package com.baeldung.hibernate.interceptors.entity;
+
+import java.util.Date;
+
+import javax.persistence.Basic;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Temporal;
+import javax.persistence.TemporalType;
+
+@Entity(name = "hbi_user")
+public class User {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    private long id;
+    private String name;
+    private String about;
+    @Basic
+    @Temporal(TemporalType.DATE)
+    private Date lastModified;
+
+    public User() {
+    }
+
+    public User(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Date getLastModified() {
+        return lastModified;
+    }
+
+    public void setLastModified(Date lastModified) {
+        this.lastModified = lastModified;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public String getAbout() {
+        return about;
+    }
+
+    public void setAbout(String about) {
+        this.about = about;
+    }
+
+    @Override
+    public String toString() {
+        return String.format("ID: %d\nName: %s\nLast Modified: %s\nAbout: %s\n", getId(), getName(), getLastModified(), getAbout());
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/joincolumn/Email.java

@@ -0,0 +1,47 @@
+package com.baeldung.hibernate.joincolumn;
+
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+
+@Entity
+public class Email {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    private String address;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "employee_id")
+    private OfficialEmployee employee;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getAddress() {
+        return address;
+    }
+
+    public void setAddress(String address) {
+        this.address = address;
+    }
+
+    public OfficialEmployee getEmployee() {
+        return employee;
+    }
+
+    public void setEmployee(OfficialEmployee employee) {
+        this.employee = employee;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/joincolumn/Office.java

@@ -0,0 +1,41 @@
+package com.baeldung.hibernate.joincolumn;
+
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.JoinColumns;
+import javax.persistence.ManyToOne;
+
+@Entity
+public class Office {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumns({
+            @JoinColumn(name="ADDR_ID", referencedColumnName="ID"),
+            @JoinColumn(name="ADDR_ZIP", referencedColumnName="ZIP")
+    })
+    private OfficeAddress address;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public OfficeAddress getAddress() {
+        return address;
+    }
+
+    public void setAddress(OfficeAddress address) {
+        this.address = address;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/joincolumn/OfficeAddress.java

@@ -0,0 +1,34 @@
+package com.baeldung.hibernate.joincolumn;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@Entity
+public class OfficeAddress {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    @Column(name = "ZIP")
+    private String zipCode;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getZipCode() {
+        return zipCode;
+    }
+
+    public void setZipCode(String zipCode) {
+        this.zipCode = zipCode;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/joincolumn/OfficialEmployee.java

@@ -0,0 +1,36 @@
+package com.baeldung.hibernate.joincolumn;
+
+import java.util.List;
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.OneToMany;
+
+@Entity
+public class OfficialEmployee {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    @OneToMany(fetch = FetchType.LAZY, mappedBy = "employee")
+    private List<Email> emails;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public List<Email> getEmails() {
+        return emails;
+    }
+
+    public void setEmails(List<Email> emails) {
+        this.emails = emails;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/jpabootstrap/application/Application.java

@@ -0,0 +1,34 @@
+package com.baeldung.hibernate.jpabootstrap.application;
+
+import com.baeldung.hibernate.jpabootstrap.config.JpaEntityManagerFactory;
+import com.baeldung.hibernate.jpabootstrap.entities.User;
+import javax.persistence.EntityManager;
+
+public class Application {
+    
+    public static void main(String[] args) {
+        EntityManager entityManager = getJpaEntityManager();
+        User user = entityManager.find(User.class, 1);
+        System.out.println(user);
+        entityManager.getTransaction().begin();
+        user.setName("John");
+        user.setEmail("john@domain.com");
+        entityManager.merge(user);
+        entityManager.getTransaction().commit();
+        entityManager.getTransaction().begin();
+        entityManager.persist(new User("Monica", "monica@domain.com"));
+        entityManager.getTransaction().commit();
+ 
+         // additional CRUD operations
+         
+    }
+
+    private static class EntityManagerHolder {
+        private static final EntityManager ENTITY_MANAGER = new JpaEntityManagerFactory(
+          new Class[]{User.class}).getEntityManager();
+    }
+    
+    public static EntityManager getJpaEntityManager() {
+        return EntityManagerHolder.ENTITY_MANAGER;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/jpabootstrap/config/HibernatePersistenceUnitInfo.java

@@ -0,0 +1,131 @@
+package com.baeldung.hibernate.jpabootstrap.config;
+
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Properties;
+import javax.sql.DataSource;
+import javax.persistence.SharedCacheMode;
+import javax.persistence.ValidationMode;
+import javax.persistence.spi.ClassTransformer;
+import javax.persistence.spi.PersistenceUnitInfo;
+import javax.persistence.spi.PersistenceUnitTransactionType;
+import org.hibernate.jpa.HibernatePersistenceProvider;
+
+public class HibernatePersistenceUnitInfo implements PersistenceUnitInfo {
+    
+    public static final String JPA_VERSION = "2.1";
+    private final String persistenceUnitName;
+    private PersistenceUnitTransactionType transactionType = PersistenceUnitTransactionType.RESOURCE_LOCAL;
+    private final List<String> managedClassNames;
+    private final List<String> mappingFileNames = new ArrayList<>();
+    private final Properties properties;
+    private DataSource jtaDataSource;
+    private DataSource nonjtaDataSource;
+    private final List<ClassTransformer> transformers = new ArrayList<>();
+    
+    public HibernatePersistenceUnitInfo(String persistenceUnitName, List<String> managedClassNames, Properties properties) {
+        this.persistenceUnitName = persistenceUnitName;
+        this.managedClassNames = managedClassNames;
+        this.properties = properties;
+    }
+    
+    @Override
+    public String getPersistenceUnitName() {
+        return persistenceUnitName;
+    }
+ 
+    @Override
+    public String getPersistenceProviderClassName() {
+        return HibernatePersistenceProvider.class.getName();
+    }
+ 
+    @Override
+    public PersistenceUnitTransactionType getTransactionType() {
+        return transactionType;
+    }
+ 
+    public HibernatePersistenceUnitInfo  setJtaDataSource(DataSource jtaDataSource) {
+        this.jtaDataSource = jtaDataSource;
+        this.nonjtaDataSource = null;
+        transactionType = PersistenceUnitTransactionType.JTA;
+        return this;
+    }
+ 
+    @Override
+    public DataSource getJtaDataSource() {
+        return jtaDataSource;
+    }
+    
+    public HibernatePersistenceUnitInfo setNonJtaDataSource(DataSource nonJtaDataSource) {
+        this.nonjtaDataSource = nonJtaDataSource;
+        this.jtaDataSource = null;
+        transactionType = PersistenceUnitTransactionType.RESOURCE_LOCAL;
+        return this;
+    }
+     
+    @Override
+    public DataSource getNonJtaDataSource() {
+        return nonjtaDataSource;
+    }
+ 
+    @Override
+    public List<String> getMappingFileNames() {
+        return mappingFileNames;
+    }
+ 
+    @Override
+    public List<URL> getJarFileUrls() {
+        return Collections.emptyList();
+    }
+ 
+    @Override
+    public URL getPersistenceUnitRootUrl() {
+        return null;
+    }
+ 
+    @Override
+    public List<String> getManagedClassNames() {
+        return managedClassNames;
+    }
+ 
+    @Override
+    public boolean excludeUnlistedClasses() {
+        return false;
+    }
+ 
+    @Override
+    public SharedCacheMode getSharedCacheMode() {
+        return SharedCacheMode.UNSPECIFIED;
+    }
+ 
+    @Override
+    public ValidationMode getValidationMode() {
+        return ValidationMode.AUTO;
+    }
+ 
+    public Properties getProperties() {
+        return properties;
+    }
+ 
+    @Override
+    public String getPersistenceXMLSchemaVersion() {
+        return JPA_VERSION;
+    }
+ 
+    @Override
+    public ClassLoader getClassLoader() {
+        return Thread.currentThread().getContextClassLoader();
+    }
+ 
+    @Override
+    public void addTransformer(ClassTransformer transformer) {
+        transformers.add(transformer);
+    }
+    
+    @Override
+    public ClassLoader getNewTempClassLoader() {
+        return null;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/jpabootstrap/config/JpaEntityManagerFactory.java

@@ -0,0 +1,69 @@
+package com.baeldung.hibernate.jpabootstrap.config;
+
+import com.mysql.cj.jdbc.MysqlDataSource;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+import java.util.stream.Collectors;
+import javax.persistence.EntityManager;
+import javax.sql.DataSource;
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.spi.PersistenceUnitInfo;
+import org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl;
+import org.hibernate.jpa.boot.internal.PersistenceUnitInfoDescriptor;
+
+public class JpaEntityManagerFactory {
+    
+    private final String DB_URL = "jdbc:mysql://databaseurl";
+    private final String DB_USER_NAME = "username";
+    private final String DB_PASSWORD = "password";
+    private final Class[] entityClasses;
+    
+    public JpaEntityManagerFactory(Class[] entityClasses) {
+        this.entityClasses = entityClasses;
+    }
+            
+    public EntityManager getEntityManager() {
+        return getEntityManagerFactory().createEntityManager();
+    }
+    
+    protected EntityManagerFactory getEntityManagerFactory() {
+        PersistenceUnitInfo persistenceUnitInfo = getPersistenceUnitInfo(getClass().getSimpleName());
+        Map<String, Object> configuration = new HashMap<>();
+        return new EntityManagerFactoryBuilderImpl(new PersistenceUnitInfoDescriptor(persistenceUnitInfo), configuration)
+          .build();
+    }
+    
+    protected HibernatePersistenceUnitInfo getPersistenceUnitInfo(String name) {
+        return new HibernatePersistenceUnitInfo(name, getEntityClassNames(), getProperties());
+    }
+    
+    protected List<String> getEntityClassNames() {
+        return Arrays.asList(getEntities())
+          .stream()
+          .map(Class::getName)
+          .collect(Collectors.toList());
+    }
+    
+    protected Properties getProperties() {
+        Properties properties = new Properties();
+        properties.put("hibernate.dialect", "org.hibernate.dialect.MySQLDialect");
+        properties.put("hibernate.id.new_generator_mappings", false);
+        properties.put("hibernate.connection.datasource", getMysqlDataSource());
+        return properties;
+    }
+    
+    protected Class[] getEntities() {
+        return entityClasses;
+    }
+    
+    protected DataSource getMysqlDataSource() {
+	MysqlDataSource mysqlDataSource = new MysqlDataSource();
+        mysqlDataSource.setURL(DB_URL);
+	mysqlDataSource.setUser(DB_USER_NAME);
+        mysqlDataSource.setPassword(DB_PASSWORD);
+	return mysqlDataSource;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/jpabootstrap/entities/User.java

@@ -0,0 +1,45 @@
+package com.baeldung.hibernate.jpabootstrap.entities;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "users")
+public class User {
+    
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private long id;
+    private String name;
+    private String email;
+    
+    public User(){}
+    
+    public User(String name, String email) {
+        this.name = name;
+        this.email = email;
+    }
+    
+    public void setName(String name) {
+        this.name = name;
+    }
+    
+    public void setEmail(String email) {
+        this.email = email;
+    }
+    
+    public long getId() {
+        return id;
+    }
+    
+    public String getName() {
+        return name;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/jpacriteriabuilder/service/EmployeeSearchService.java

@@ -0,0 +1,15 @@
+package com.baeldung.hibernate.jpacriteriabuilder.service;
+
+import java.util.List;
+
+import com.baeldung.hibernate.entities.DeptEmployee;
+
+public interface EmployeeSearchService {
+
+    List<DeptEmployee> filterbyTitleUsingCriteriaBuilder(List<String> titles);
+
+    List<DeptEmployee> filterbyTitleUsingExpression(List<String> titles);
+
+    List<DeptEmployee> searchByDepartmentQuery(String query);
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/jpacriteriabuilder/service/EmployeeSearchServiceImpl.java

@@ -0,0 +1,77 @@
+package com.baeldung.hibernate.jpacriteriabuilder.service;
+
+import java.util.List;
+
+import javax.persistence.EntityManager;
+import javax.persistence.TypedQuery;
+import javax.persistence.criteria.CriteriaBuilder;
+import javax.persistence.criteria.CriteriaBuilder.In;
+import javax.persistence.criteria.CriteriaQuery;
+import javax.persistence.criteria.Root;
+import javax.persistence.criteria.Subquery;
+
+import com.baeldung.hibernate.entities.Department;
+import com.baeldung.hibernate.entities.DeptEmployee;
+
+public class EmployeeSearchServiceImpl implements EmployeeSearchService {
+
+    private EntityManager entityManager;
+    private CriteriaBuilder criteriaBuilder;
+
+    public EmployeeSearchServiceImpl(EntityManager entityManager) {
+        this.entityManager = entityManager;
+        this.criteriaBuilder = entityManager.getCriteriaBuilder();
+        
+    }
+
+    @Override
+    public List<DeptEmployee> filterbyTitleUsingCriteriaBuilder(List<String> titles) {
+        CriteriaQuery<DeptEmployee> criteriaQuery = createCriteriaQuery(DeptEmployee.class);
+        Root<DeptEmployee> root = criteriaQuery.from(DeptEmployee.class);
+        In<String> inClause = criteriaBuilder.in(root.get("title"));
+        for (String title : titles) {
+            inClause.value(title);
+        }
+        criteriaQuery.select(root)
+            .where(inClause);
+        TypedQuery<DeptEmployee> query = entityManager.createQuery(criteriaQuery);
+        return query.getResultList();
+    }
+
+    @Override
+    public List<DeptEmployee> filterbyTitleUsingExpression(List<String> titles) {
+        CriteriaQuery<DeptEmployee> criteriaQuery = createCriteriaQuery(DeptEmployee.class);
+        Root<DeptEmployee> root = criteriaQuery.from(DeptEmployee.class);
+        criteriaQuery.select(root)
+            .where(root.get("title")
+                .in(titles));
+        TypedQuery<DeptEmployee> query = entityManager.createQuery(criteriaQuery);
+        return query.getResultList();
+    }
+
+    @Override
+    public List<DeptEmployee> searchByDepartmentQuery(String searchKey) {
+        CriteriaQuery<DeptEmployee> criteriaQuery = createCriteriaQuery(DeptEmployee.class);
+        Root<DeptEmployee> emp = criteriaQuery.from(DeptEmployee.class);
+
+        Subquery<Department> subquery = criteriaQuery.subquery(Department.class);
+        Root<Department> dept = subquery.from(Department.class);
+        subquery.select(dept)
+            .distinct(true)
+            .where(criteriaBuilder.like(dept.get("name"), new StringBuffer("%").append(searchKey)
+                .append("%")
+                .toString()));
+
+        criteriaQuery.select(emp)
+            .where(criteriaBuilder.in(emp.get("department"))
+                .value(subquery));
+
+        TypedQuery<DeptEmployee> query = entityManager.createQuery(criteriaQuery);
+        return query.getResultList();
+    }
+    
+    private <T> CriteriaQuery<T> createCriteriaQuery(Class<T> klass) {
+        return criteriaBuilder.createQuery(klass);
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/lifecycle/DirtyDataInspector.java

@@ -0,0 +1,26 @@
+package com.baeldung.hibernate.lifecycle;
+
+import org.hibernate.EmptyInterceptor;
+import org.hibernate.type.Type;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.List;
+
+public class DirtyDataInspector extends EmptyInterceptor {
+    private static final ArrayList<FootballPlayer> dirtyEntities = new ArrayList<>();
+
+    @Override
+    public boolean onFlushDirty(Object entity, Serializable id, Object[] currentState, Object[] previousState, String[] propertyNames, Type[] types) {
+        dirtyEntities.add((FootballPlayer) entity);
+        return true;
+    }
+
+    public static List<FootballPlayer> getDirtyEntities() {
+        return dirtyEntities;
+    }
+
+    public static void clearDirtyEntitites() {
+        dirtyEntities.clear();
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/lifecycle/FootballPlayer.java

@@ -0,0 +1,35 @@
+package com.baeldung.hibernate.lifecycle;
+
+import javax.persistence.*;
+
+@Entity
+@Table(name = "Football_Player")
+public class FootballPlayer {
+    @Id
+    @GeneratedValue
+    private long id;
+
+    @Column
+    private String name;
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public String toString() {
+        return "FootballPlayer{" + "id=" + id + ", name='" + name + '\'' + '}';
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/lifecycle/HibernateLifecycleUtil.java

@@ -0,0 +1,96 @@
+package com.baeldung.hibernate.lifecycle;
+
+import org.h2.tools.RunScript;
+import org.hibernate.Session;
+import org.hibernate.SessionFactory;
+import org.hibernate.Transaction;
+import org.hibernate.boot.Metadata;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.SessionFactoryBuilder;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.engine.spi.EntityEntry;
+import org.hibernate.engine.spi.SessionImplementor;
+import org.hibernate.service.ServiceRegistry;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.net.URL;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.ResultSet;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+import java.util.stream.Collectors;
+
+public class HibernateLifecycleUtil {
+    private static SessionFactory sessionFactory;
+    private static Connection connection;
+
+    public static void init() throws Exception {
+        Properties hbConfigProp = getHibernateProperties();
+        Class.forName(hbConfigProp.getProperty("hibernate.connection.driver_class"));
+        connection = DriverManager.getConnection(hbConfigProp.getProperty("hibernate.connection.url"), hbConfigProp.getProperty("hibernate.connection.username"), hbConfigProp.getProperty("hibernate.connection.password"));
+
+        try (InputStream h2InitStream = Thread.currentThread().getContextClassLoader().getResourceAsStream("lifecycle-init.sql");
+            InputStreamReader h2InitReader = new InputStreamReader(h2InitStream)) {
+            RunScript.execute(connection, h2InitReader);
+        }
+
+        ServiceRegistry serviceRegistry = configureServiceRegistry();
+        sessionFactory = getSessionFactoryBuilder(serviceRegistry).applyInterceptor(new DirtyDataInspector()).build();
+    }
+
+    public static void tearDown() throws Exception {
+        sessionFactory.close();
+        connection.close();
+    }
+
+    public static SessionFactory getSessionFactory() {
+        return sessionFactory;
+    }
+
+    private static SessionFactoryBuilder getSessionFactoryBuilder(ServiceRegistry serviceRegistry) {
+        MetadataSources metadataSources = new MetadataSources(serviceRegistry);
+        metadataSources.addAnnotatedClass(FootballPlayer.class);
+
+        Metadata metadata = metadataSources.buildMetadata();
+        return metadata.getSessionFactoryBuilder();
+
+    }
+
+    private static ServiceRegistry configureServiceRegistry() throws IOException {
+        Properties properties = getHibernateProperties();
+        return new StandardServiceRegistryBuilder().applySettings(properties).build();
+    }
+
+    private static Properties getHibernateProperties() throws IOException {
+        Properties properties = new Properties();
+        URL propertiesURL = Thread.currentThread().getContextClassLoader().getResource("hibernate-lifecycle.properties");
+        try (FileInputStream inputStream = new FileInputStream(propertiesURL.getFile())) {
+            properties.load(inputStream);
+        }
+        return properties;
+    }
+
+    public static List<EntityEntry> getManagedEntities(Session session) {
+        Map.Entry<Object, EntityEntry>[] entries = ((SessionImplementor) session).getPersistenceContext().reentrantSafeEntityEntries();
+        return Arrays.stream(entries).map(e -> e.getValue()).collect(Collectors.toList());
+    }
+
+    public static Transaction startTransaction(Session s) {
+        Transaction tx = s.getTransaction();
+        tx.begin();
+        return tx;
+    }
+
+    public static int queryCount(String query) throws Exception {
+        try (ResultSet rs = connection.createStatement().executeQuery(query)) {
+            rs.next();
+            return rs.getInt(1);
+        }
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/lob/HibernateSessionUtil.java

@@ -0,0 +1,61 @@
+package com.baeldung.hibernate.lob;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.net.URL;
+import java.util.Properties;
+
+import org.apache.commons.lang3.StringUtils;
+import org.hibernate.SessionFactory;
+import org.hibernate.boot.Metadata;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.service.ServiceRegistry;
+
+import com.baeldung.hibernate.lob.model.User;
+
+public class HibernateSessionUtil {
+
+	private static SessionFactory sessionFactory;
+    private static String PROPERTY_FILE_NAME;
+
+    public static SessionFactory getSessionFactory() throws IOException {
+        return getSessionFactory(null);
+    }
+
+    public static SessionFactory getSessionFactory(String propertyFileName) throws IOException {
+        PROPERTY_FILE_NAME = propertyFileName;
+        if (sessionFactory == null) {
+            ServiceRegistry serviceRegistry = configureServiceRegistry();
+            sessionFactory = makeSessionFactory(serviceRegistry);
+        }
+        return sessionFactory;
+    }
+
+    private static SessionFactory makeSessionFactory(ServiceRegistry serviceRegistry) {
+        MetadataSources metadataSources = new MetadataSources(serviceRegistry);
+        metadataSources.addAnnotatedClass(User.class);
+
+        Metadata metadata = metadataSources.buildMetadata();
+        return metadata.getSessionFactoryBuilder()
+                .build();
+
+    }
+
+    private static ServiceRegistry configureServiceRegistry() throws IOException {
+        Properties properties = getProperties();
+        return new StandardServiceRegistryBuilder().applySettings(properties)
+                .build();
+    }
+
+    private static Properties getProperties() throws IOException {
+        Properties properties = new Properties();
+        URL propertiesURL = Thread.currentThread()
+          .getContextClassLoader()
+          .getResource(StringUtils.defaultString(PROPERTY_FILE_NAME, "hibernate.properties"));
+        try (FileInputStream inputStream = new FileInputStream(propertiesURL.getFile())) {
+            properties.load(inputStream);
+        }
+        return properties;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/lob/model/User.java

@@ -0,0 +1,46 @@
+package com.baeldung.hibernate.lob.model;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Lob;
+import javax.persistence.Table;
+
+@Entity 
+@Table(name="user")
+public class User {
+
+    @Id
+	private String id; 
+	 
+	@Column(name = "name", columnDefinition="VARCHAR(128)") 
+	private String name; 
+	 
+	@Lob 
+	@Column(name = "photo", columnDefinition="BLOB") 
+	private byte[] photo;
+	 
+	public String getId() {
+		return id;
+	}
+	 
+	public void setId(String id) {
+		this.id = id;
+	}
+	
+	public String getName() {
+		return name;
+	}
+	
+	public void setName(String name) {
+		this.name = name;
+	}
+	
+	public byte[] getPhoto() {
+		return photo;
+	}
+	
+	public void setPhoto(byte[] photo) {
+		this.photo = photo;
+	}
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/namingstrategy/CustomPhysicalNamingStrategy.java

@@ -0,0 +1,47 @@
+package com.baeldung.hibernate.namingstrategy;
+
+import org.hibernate.boot.model.naming.Identifier;
+import org.hibernate.boot.model.naming.PhysicalNamingStrategy;
+import org.hibernate.engine.jdbc.env.spi.JdbcEnvironment;
+
+public class CustomPhysicalNamingStrategy implements PhysicalNamingStrategy {
+
+    @Override
+    public Identifier toPhysicalCatalogName(final Identifier identifier, final JdbcEnvironment jdbcEnv) {
+        return convertToSnakeCase(identifier);
+    }
+
+    @Override
+    public Identifier toPhysicalColumnName(final Identifier identifier, final JdbcEnvironment jdbcEnv) {
+        return convertToSnakeCase(identifier);
+    }
+
+    @Override
+    public Identifier toPhysicalSchemaName(final Identifier identifier, final JdbcEnvironment jdbcEnv) {
+        return convertToSnakeCase(identifier);
+    }
+
+    @Override
+    public Identifier toPhysicalSequenceName(final Identifier identifier, final JdbcEnvironment jdbcEnv) {
+        return convertToSnakeCase(identifier);
+    }
+
+    @Override
+    public Identifier toPhysicalTableName(final Identifier identifier, final JdbcEnvironment jdbcEnv) {
+        return convertToSnakeCase(identifier);
+    }
+
+    private Identifier convertToSnakeCase(final Identifier identifier) {
+        if (identifier == null) {
+            return identifier;
+        }
+
+        final String regex = "([a-z])([A-Z])";
+        final String replacement = "$1_$2";
+        final String newName = identifier.getText()
+            .replaceAll(regex, replacement)
+            .toLowerCase();
+        return Identifier.toIdentifier(newName);
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/namingstrategy/Customer.java

@@ -0,0 +1,56 @@
+package com.baeldung.hibernate.namingstrategy;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "Customers")
+public class Customer {
+
+    @Id
+    @GeneratedValue
+    private Long id;
+
+    private String firstName;
+
+    private String lastName;
+
+    @Column(name = "email")
+    private String emailAddress;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public String getEmailAddress() {
+        return emailAddress;
+    }
+
+    public void setEmailAddress(String emailAddress) {
+        this.emailAddress = emailAddress;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/onetoone/HibernateUtil.java

@@ -0,0 +1,63 @@
+package com.baeldung.hibernate.onetoone;
+
+import com.baeldung.hibernate.customtypes.LocalDateStringType;
+import org.hibernate.SessionFactory;
+import org.hibernate.boot.Metadata;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.service.ServiceRegistry;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.net.URL;
+import java.util.Properties;
+
+public class HibernateUtil {
+    private static SessionFactory sessionFactory;
+
+    private HibernateUtil() {
+    }
+
+    public static SessionFactory getSessionFactory(Strategy strategy) {
+        return buildSessionFactory(strategy);
+    }
+
+    private static SessionFactory buildSessionFactory(Strategy strategy) {
+        try {
+            ServiceRegistry serviceRegistry = configureServiceRegistry();
+
+            MetadataSources metadataSources = new MetadataSources(serviceRegistry);
+
+            for (Class<?> entityClass : strategy.getEntityClasses()) {
+                metadataSources.addAnnotatedClass(entityClass);
+            }
+
+            Metadata metadata = metadataSources.getMetadataBuilder()
+                    .applyBasicType(LocalDateStringType.INSTANCE)
+                    .build();
+
+            return metadata.getSessionFactoryBuilder()
+                    .build();
+        } catch (IOException ex) {
+            throw new ExceptionInInitializerError(ex);
+        }
+    }
+
+
+    private static ServiceRegistry configureServiceRegistry() throws IOException {
+        Properties properties = getProperties();
+        return new StandardServiceRegistryBuilder().applySettings(properties)
+                .build();
+    }
+
+    private static Properties getProperties() throws IOException {
+        Properties properties = new Properties();
+        URL propertiesURL = Thread.currentThread()
+                .getContextClassLoader()
+                .getResource("hibernate.properties");
+        try (FileInputStream inputStream = new FileInputStream(propertiesURL.getFile())) {
+            properties.load(inputStream);
+        }
+        return properties;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/onetoone/Strategy.java

@@ -0,0 +1,25 @@
+package com.baeldung.hibernate.onetoone;
+
+
+import java.util.Arrays;
+import java.util.List;
+
+public enum Strategy {
+    //See that the classes belongs to different packages
+    FOREIGN_KEY(Arrays.asList(com.baeldung.hibernate.onetoone.foreignkeybased.User.class,
+            com.baeldung.hibernate.onetoone.foreignkeybased.Address.class)),
+    SHARED_PRIMARY_KEY(Arrays.asList(com.baeldung.hibernate.onetoone.sharedkeybased.User.class,
+            com.baeldung.hibernate.onetoone.sharedkeybased.Address.class)),
+    JOIN_TABLE_BASED(Arrays.asList(com.baeldung.hibernate.onetoone.jointablebased.Employee.class,
+            com.baeldung.hibernate.onetoone.jointablebased.WorkStation.class));
+
+    private List<Class<?>> entityClasses;
+
+    Strategy(List<Class<?>> entityClasses) {
+        this.entityClasses = entityClasses;
+    }
+
+    public List<Class<?>> getEntityClasses() {
+        return entityClasses;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/onetoone/foreignkeybased/Address.java

@@ -0,0 +1,60 @@
+package com.baeldung.hibernate.onetoone.foreignkeybased;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.OneToOne;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "address")
+public class Address {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    @Column(name = "id")
+    private Long id;
+
+    @Column(name = "street")
+    private String street;
+
+    @Column(name = "city")
+    private String city;
+
+    @OneToOne(mappedBy = "address")
+    private User user;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getStreet() {
+        return street;
+    }
+
+    public void setStreet(String street) {
+        this.street = street;
+    }
+
+    public String getCity() {
+        return city;
+    }
+
+    public void setCity(String city) {
+        this.city = city;
+    }
+
+    public User getUser() {
+        return user;
+    }
+
+    public void setUser(User user) {
+        this.user = user;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/onetoone/foreignkeybased/User.java

@@ -0,0 +1,51 @@
+package com.baeldung.hibernate.onetoone.foreignkeybased;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.OneToOne;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "users")
+public class User {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    @Column(name = "id")
+    private Long id;
+
+    @Column(name = "username")
+    private String userName;
+
+    @OneToOne(cascade = CascadeType.ALL)
+    @JoinColumn(name = "address_id", referencedColumnName = "id")
+    private Address address;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getUserName() {
+        return userName;
+    }
+
+    public void setUserName(String userName) {
+        this.userName = userName;
+    }
+
+    public Address getAddress() {
+        return address;
+    }
+
+    public void setAddress(Address address) {
+        this.address = address;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/onetoone/jointablebased/Employee.java

@@ -0,0 +1,53 @@
+package com.baeldung.hibernate.onetoone.jointablebased;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.JoinTable;
+import javax.persistence.OneToOne;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "employee")
+public class Employee {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    @Column(name = "id")
+    private Long id;
+
+    @Column(name = "ename")
+    private String name;
+
+    @OneToOne(cascade = CascadeType.ALL)
+    @JoinTable(name = "emp_workstation", joinColumns = {@JoinColumn(name = "employee_id", referencedColumnName = "id")},
+            inverseJoinColumns = {@JoinColumn(name = "workstation_id", referencedColumnName = "id")})
+    private WorkStation workStation;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public WorkStation getWorkStation() {
+        return workStation;
+    }
+
+    public void setWorkStation(WorkStation workStation) {
+        this.workStation = workStation;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/onetoone/jointablebased/WorkStation.java

@@ -0,0 +1,61 @@
+package com.baeldung.hibernate.onetoone.jointablebased;
+
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.OneToOne;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "workstation")
+public class WorkStation {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    @Column(name = "id")
+    private Long id;
+
+    @Column(name = "workstation_number")
+    private Integer workstationNumber;
+
+    @Column(name = "floor")
+    private String floor;
+
+    @OneToOne(mappedBy = "workStation")
+    private Employee employee;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Integer getWorkstationNumber() {
+        return workstationNumber;
+    }
+
+    public void setWorkstationNumber(Integer workstationNumber) {
+        this.workstationNumber = workstationNumber;
+    }
+
+    public String getFloor() {
+        return floor;
+    }
+
+    public void setFloor(String floor) {
+        this.floor = floor;
+    }
+
+    public Employee getEmployee() {
+        return employee;
+    }
+
+    public void setEmployee(Employee employee) {
+        this.employee = employee;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/onetoone/sharedkeybased/Address.java

@@ -0,0 +1,60 @@
+package com.baeldung.hibernate.onetoone.sharedkeybased;
+
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.MapsId;
+import javax.persistence.OneToOne;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "address")
+public class Address {
+
+    @Id
+    @Column(name = "id")
+    private Long id;
+
+    @Column(name = "street")
+    private String street;
+
+    @Column(name = "city")
+    private String city;
+
+    @OneToOne
+    @MapsId
+    private User user;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getStreet() {
+        return street;
+    }
+
+    public void setStreet(String street) {
+        this.street = street;
+    }
+
+    public String getCity() {
+        return city;
+    }
+
+    public void setCity(String city) {
+        this.city = city;
+    }
+
+    public User getUser() {
+        return user;
+    }
+
+    public void setUser(User user) {
+        this.user = user;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/onetoone/sharedkeybased/User.java

@@ -0,0 +1,50 @@
+package com.baeldung.hibernate.onetoone.sharedkeybased;
+
+
+import javax.persistence.CascadeType;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.OneToOne;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "users")
+public class User {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    @Column(name = "id")
+    private Long id;
+
+    @Column(name = "username")
+    private String userName;
+
+    @OneToOne(mappedBy = "user", cascade = CascadeType.ALL)
+    private Address address;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getUserName() {
+        return userName;
+    }
+
+    public void setUserName(String userName) {
+        this.userName = userName;
+    }
+
+    public Address getAddress() {
+        return address;
+    }
+
+    public void setAddress(Address address) {
+        this.address = address;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/operations/HibernateOperations.java

@@ -0,0 +1,114 @@
+package com.baeldung.hibernate.operations;
+
+import java.util.List;
+
+import javax.persistence.EntityManager;
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.Persistence;
+
+import com.baeldung.hibernate.pojo.Movie;
+
+/**
+ * 
+ *Class to illustrate the usage of EntityManager API.
+ */
+public class HibernateOperations {
+
+    private static final EntityManagerFactory emf;
+
+    /**
+     * Static block for creating EntityManagerFactory. The Persistence class looks for META-INF/persistence.xml in the classpath.
+     */
+    static {
+        emf = Persistence.createEntityManagerFactory("com.baeldung.movie_catalog");
+    }
+
+    /**
+     * Static method returning EntityManager.
+     * @return EntityManager
+     */
+    public static EntityManager getEntityManager() {
+        return emf.createEntityManager();
+    }
+
+    /**
+     * Saves the movie entity into the database. Here we are using Application Managed EntityManager, hence should handle transactions by ourselves.
+     */
+    public void saveMovie() {
+        EntityManager em = HibernateOperations.getEntityManager();
+        em.getTransaction()
+            .begin();
+        Movie movie = new Movie();
+        movie.setId(1L);
+        movie.setMovieName("The Godfather");
+        movie.setReleaseYear(1972);
+        movie.setLanguage("English");
+        em.persist(movie);
+        em.getTransaction()
+            .commit();
+    }
+
+    /**
+     * Method to illustrate the querying support in EntityManager when the result is a single object.
+     * @return Movie
+     */
+    public Movie queryForMovieById() {
+        EntityManager em = HibernateOperations.getEntityManager();
+        Movie movie = (Movie) em.createQuery("SELECT movie from Movie movie where movie.id = ?1")
+            .setParameter(1, new Long(1L))
+            .getSingleResult();
+        return movie;
+    }
+
+    /**
+     * Method to illustrate the querying support in EntityManager when the result is a list.
+     * @return
+     */
+    public List<?> queryForMovies() {
+        EntityManager em = HibernateOperations.getEntityManager();
+        List<?> movies = em.createQuery("SELECT movie from Movie movie where movie.language = ?1")
+            .setParameter(1, "English")
+            .getResultList();
+        return movies;
+    }
+
+    /**
+     * Method to illustrate the usage of find() method.
+     * @param movieId
+     * @return Movie
+     */
+    public Movie getMovie(Long movieId) {
+        EntityManager em = HibernateOperations.getEntityManager();
+        Movie movie = em.find(Movie.class, new Long(movieId));
+        return movie;
+    }
+
+    /**
+     * Method to illustrate the usage of merge() function.
+     */
+    public void mergeMovie() {
+        EntityManager em = HibernateOperations.getEntityManager();
+        Movie movie = getMovie(1L);
+        em.detach(movie);
+        movie.setLanguage("Italian");
+        em.getTransaction()
+            .begin();
+        em.merge(movie);
+        em.getTransaction()
+            .commit();
+    }
+
+    /**
+     * Method to illustrate the usage of remove() function.
+     */
+    public void removeMovie() {
+        EntityManager em = HibernateOperations.getEntityManager();
+        em.getTransaction()
+            .begin();
+        Movie movie = em.find(Movie.class, new Long(1L));
+        em.remove(movie);
+        em.getTransaction()
+            .commit();
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/optimisticlocking/OptimisticLockingCourse.java

@@ -0,0 +1,48 @@
+package com.baeldung.hibernate.optimisticlocking;
+
+import javax.persistence.*;
+
+@Entity
+public class OptimisticLockingCourse {
+
+    @Id
+    private Long id;
+
+    private String name;
+
+    @ManyToOne
+    @JoinTable(name = "optimistic_student_course")
+    private OptimisticLockingStudent student;
+
+    public OptimisticLockingCourse(Long id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public OptimisticLockingCourse() {
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public OptimisticLockingStudent getStudent() {
+        return student;
+    }
+
+    public void setStudent(OptimisticLockingStudent student) {
+        this.student = student;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/optimisticlocking/OptimisticLockingStudent.java

@@ -0,0 +1,70 @@
+package com.baeldung.hibernate.optimisticlocking;
+
+import javax.persistence.*;
+import java.util.List;
+
+@Entity
+public class OptimisticLockingStudent {
+
+    @Id
+    private Long id;
+
+    private String name;
+
+    private String lastName;
+    @Version
+    private Integer version;
+
+    @OneToMany(mappedBy = "student")
+    private List<OptimisticLockingCourse> courses;
+
+    public OptimisticLockingStudent(Long id, String name, String lastName, List<OptimisticLockingCourse> courses) {
+        this.id = id;
+        this.name = name;
+        this.lastName = lastName;
+        this.courses = courses;
+    }
+
+    public OptimisticLockingStudent() {
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Integer getVersion() {
+        return version;
+    }
+
+    public void setVersion(Integer version) {
+        this.version = version;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public List<OptimisticLockingCourse> getCourses() {
+        return courses;
+    }
+
+    public void setCourses(List<OptimisticLockingCourse> courses) {
+        this.courses = courses;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/persistjson/Customer.java

@@ -0,0 +1,80 @@
+package com.baeldung.hibernate.persistjson;
+
+import java.io.IOException;
+import java.util.Map;
+
+import javax.persistence.Convert;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+@Entity
+@Table(name = "Customers")
+public class Customer {
+
+    @Id
+    private int id;
+
+    private String firstName;
+
+    private String lastName;
+
+    private String customerAttributeJSON;
+
+    @Convert(converter = HashMapConverter.class)
+    private Map<String, Object> customerAttributes;
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public String getCustomerAttributeJSON() {
+        return customerAttributeJSON;
+    }
+
+    public void setCustomerAttributeJSON(String customerAttributeJSON) {
+        this.customerAttributeJSON = customerAttributeJSON;
+    }
+
+    public Map<String, Object> getCustomerAttributes() {
+        return customerAttributes;
+    }
+
+    public void setCustomerAttributes(Map<String, Object> customerAttributes) {
+        this.customerAttributes = customerAttributes;
+    }
+
+    private static final ObjectMapper objectMapper = new ObjectMapper();
+
+    public void serializeCustomerAttributes() throws JsonProcessingException {
+        this.customerAttributeJSON = objectMapper.writeValueAsString(customerAttributes);
+    }
+
+    public void deserializeCustomerAttributes() throws IOException {
+        this.customerAttributes = objectMapper.readValue(customerAttributeJSON, Map.class);
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/persistjson/HashMapConverter.java

@@ -0,0 +1,47 @@
+package com.baeldung.hibernate.persistjson;
+
+import java.io.IOException;
+import java.util.Map;
+
+import javax.persistence.AttributeConverter;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.baeldung.hibernate.interceptors.CustomInterceptor;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+public class HashMapConverter implements AttributeConverter<Map<String, Object>, String> {
+
+    private static final Logger logger = LoggerFactory.getLogger(CustomInterceptor.class);
+
+    private final ObjectMapper objectMapper = new ObjectMapper();
+
+    @Override
+    public String convertToDatabaseColumn(Map<String, Object> customerInfo) {
+
+        String customerInfoJson = null;
+        try {
+            customerInfoJson = objectMapper.writeValueAsString(customerInfo);
+        } catch (final JsonProcessingException e) {
+            logger.error("JSON writing error", e);
+        }
+
+        return customerInfoJson;
+    }
+
+    @Override
+    public Map<String, Object> convertToEntityAttribute(String customerInfoJSON) {
+
+        Map<String, Object> customerInfo = null;
+        try {
+            customerInfo = objectMapper.readValue(customerInfoJSON, Map.class);
+        } catch (final IOException e) {
+            logger.error("JSON reading error", e);
+        }
+
+        return customerInfo;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pessimisticlocking/Address.java

@@ -0,0 +1,34 @@
+package com.baeldung.hibernate.pessimisticlocking;
+
+import javax.persistence.Embeddable;
+
+@Embeddable
+public class Address {
+
+    private String country;
+    private String city;
+
+    public Address(String country, String city) {
+        this.country = country;
+        this.city = city;
+    }
+
+    public Address() {
+    }
+
+    public String getCountry() {
+        return country;
+    }
+
+    public void setCountry(String country) {
+        this.country = country;
+    }
+
+    public String getCity() {
+        return city;
+    }
+
+    public void setCity(String city) {
+        this.city = city;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pessimisticlocking/Customer.java

@@ -0,0 +1,58 @@
+package com.baeldung.hibernate.pessimisticlocking;
+
+import javax.persistence.*;
+import java.util.List;
+
+@Entity
+public class Customer {
+
+    @Id
+    private Long customerId;
+    private String name;
+    private String lastName;
+    @ElementCollection
+    @CollectionTable(name = "customer_address")
+    private List<Address> addressList;
+
+    public Customer() {
+    }
+
+    public Customer(Long customerId, String name, String lastName, List<Address> addressList) {
+        this.customerId = customerId;
+        this.name = name;
+        this.lastName = lastName;
+        this.addressList = addressList;
+    }
+
+    public Long getCustomerId() {
+        return customerId;
+    }
+
+    public void setCustomerId(Long customerId) {
+        this.customerId = customerId;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public List<Address> getAddressList() {
+        return addressList;
+    }
+
+    public void setAddressList(List<Address> addressList) {
+        this.addressList = addressList;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pessimisticlocking/Individual.java

@@ -0,0 +1,49 @@
+package com.baeldung.hibernate.pessimisticlocking;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Inheritance;
+import javax.persistence.InheritanceType;
+
+@Entity
+@Inheritance(strategy = InheritanceType.JOINED)
+public class Individual {
+
+    @Id
+    private Long id;
+    private String name;
+    private String lastName;
+
+    public Individual(Long id, String name, String lastName) {
+        this.id = id;
+        this.name = name;
+        this.lastName = lastName;
+    }
+
+    public Individual() {
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pessimisticlocking/PessimisticLockingCourse.java

@@ -0,0 +1,47 @@
+package com.baeldung.hibernate.pessimisticlocking;
+
+import javax.persistence.*;
+
+@Entity
+public class PessimisticLockingCourse {
+
+    @Id
+    private Long courseId;
+    private String name;
+    @ManyToOne
+    @JoinTable(name = "student_course")
+    private PessimisticLockingStudent student;
+
+    public PessimisticLockingCourse(Long courseId, String name, PessimisticLockingStudent student) {
+        this.courseId = courseId;
+        this.name = name;
+        this.student = student;
+    }
+
+    public PessimisticLockingCourse() {
+    }
+
+    public Long getCourseId() {
+        return courseId;
+    }
+
+    public void setCourseId(Long courseId) {
+        this.courseId = courseId;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public PessimisticLockingStudent getStudent() {
+        return student;
+    }
+
+    public void setStudent(PessimisticLockingStudent students) {
+        this.student = students;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pessimisticlocking/PessimisticLockingEmployee.java

@@ -0,0 +1,27 @@
+package com.baeldung.hibernate.pessimisticlocking;
+
+import javax.persistence.Entity;
+import java.math.BigDecimal;
+
+@Entity
+public class PessimisticLockingEmployee extends Individual {
+
+    private BigDecimal salary;
+
+    public PessimisticLockingEmployee(Long id, String name, String lastName, BigDecimal salary) {
+        super(id, name, lastName);
+        this.salary = salary;
+    }
+
+    public PessimisticLockingEmployee() {
+        super();
+    }
+
+    public BigDecimal getSalary() {
+        return salary;
+    }
+
+    public void setSalary(BigDecimal average) {
+        this.salary = average;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pessimisticlocking/PessimisticLockingStudent.java

@@ -0,0 +1,46 @@
+package com.baeldung.hibernate.pessimisticlocking;
+
+import javax.persistence.*;
+import java.util.List;
+
+@Entity
+public class PessimisticLockingStudent {
+
+    @Id
+    private Long id;
+    private String name;
+    @OneToMany(mappedBy = "student")
+    private List<PessimisticLockingCourse> courses;
+
+    public PessimisticLockingStudent(Long id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public PessimisticLockingStudent() {
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public List<PessimisticLockingCourse> getCourses() {
+        return courses;
+    }
+
+    public void setCourses(List<PessimisticLockingCourse> courses) {
+        this.courses = courses;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/Course.java

@@ -0,0 +1,27 @@
+package com.baeldung.hibernate.pojo;
+
+import java.util.UUID;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+
+@Entity
+public class Course {
+
+    @Id
+    @GeneratedValue
+    private UUID courseId;
+
+    public UUID getCourseId() {
+        return courseId;
+    }
+
+    public void setCourseId(UUID courseId) {
+        this.courseId = courseId;
+    }
+
+
+
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/Department.java

@@ -0,0 +1,25 @@
+package com.baeldung.hibernate.pojo;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.TableGenerator;
+
+@Entity
+public class Department {
+    @Id
+    @GeneratedValue(strategy = GenerationType.TABLE, generator="table-generator")
+    @TableGenerator (name="table-generator", table="dep_ids", pkColumnName="seq_id", valueColumnName="seq_value")
+    private long depId;
+
+    public long getDepId() {
+        return depId;
+    }
+
+    public void setDepId(long depId) {
+        this.depId = depId;
+    }
+    
+    
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/Employee.java

@@ -0,0 +1,87 @@
+package com.baeldung.hibernate.pojo;
+
+import org.hibernate.annotations.*;
+
+import javax.persistence.Entity;
+import javax.persistence.*;
+import java.io.Serializable;
+import java.util.HashSet;
+import java.util.Set;
+
+@Entity
+@Where(clause = "deleted = false")
+@FilterDef(name = "incomeLevelFilter", parameters = @ParamDef(name = "incomeLimit", type = "int"))
+@Filter(name = "incomeLevelFilter", condition = "grossIncome > :incomeLimit")
+public class Employee implements Serializable {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Integer id;
+
+    private long grossIncome;
+
+    private int taxInPercents;
+
+    private boolean deleted;
+
+    public long getTaxJavaWay() {
+        return grossIncome * taxInPercents / 100;
+    }
+
+    @Formula("grossIncome * taxInPercents / 100")
+    private long tax;
+
+    @OneToMany
+    @JoinColumn(name = "employee_id")
+    @Where(clause = "deleted = false")
+    private Set<Phone> phones = new HashSet<>(0);
+
+    public Employee() {
+    }
+
+    public Employee(long grossIncome, int taxInPercents) {
+        this.grossIncome = grossIncome;
+        this.taxInPercents = taxInPercents;
+    }
+
+    public Integer getId() {
+        return id;
+    }
+
+    public long getGrossIncome() {
+        return grossIncome;
+    }
+
+    public int getTaxInPercents() {
+        return taxInPercents;
+    }
+
+    public long getTax() {
+        return tax;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public void setGrossIncome(long grossIncome) {
+        this.grossIncome = grossIncome;
+    }
+
+    public void setTaxInPercents(int taxInPercents) {
+        this.taxInPercents = taxInPercents;
+    }
+
+    public boolean getDeleted() {
+        return deleted;
+    }
+
+    public void setDeleted(boolean deleted) {
+        this.deleted = deleted;
+    }
+
+    public Set<Phone> getPhones() {
+        return phones;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/EntityDescription.java

@@ -0,0 +1,55 @@
+package com.baeldung.hibernate.pojo;
+
+import org.hibernate.annotations.Any;
+
+import javax.persistence.*;
+import java.io.Serializable;
+
+@Entity
+public class EntityDescription implements Serializable {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Integer id;
+
+    private String description;
+
+    @Any(
+            metaDef = "EntityDescriptionMetaDef",
+            metaColumn = @Column(name = "entity_type")
+    )
+    @JoinColumn(name = "entity_id")
+    private Serializable entity;
+
+    public EntityDescription() {
+    }
+
+    public EntityDescription(String description, Serializable entity) {
+        this.description = description;
+        this.entity = entity;
+    }
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public Serializable getEntity() {
+        return entity;
+    }
+
+    public void setEntity(Serializable entity) {
+        this.entity = entity;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/Movie.java

@@ -0,0 +1,52 @@
+package com.baeldung.hibernate.pojo;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "MOVIE")
+public class Movie {
+
+    @Id
+    private Long id;
+
+    private String movieName;
+
+    private Integer releaseYear;
+
+    private String language;
+
+    public String getMovieName() {
+        return movieName;
+    }
+
+    public void setMovieName(String movieName) {
+        this.movieName = movieName;
+    }
+
+    public Integer getReleaseYear() {
+        return releaseYear;
+    }
+
+    public void setReleaseYear(Integer releaseYear) {
+        this.releaseYear = releaseYear;
+    }
+
+    public String getLanguage() {
+        return language;
+    }
+
+    public void setLanguage(String language) {
+        this.language = language;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/OrderEntry.java

@@ -0,0 +1,20 @@
+package com.baeldung.hibernate.pojo;
+
+import javax.persistence.EmbeddedId;
+import javax.persistence.Entity;
+
+@Entity
+public class OrderEntry {
+
+    @EmbeddedId
+    private OrderEntryPK entryId;
+
+    public OrderEntryPK getEntryId() {
+        return entryId;
+    }
+
+    public void setEntryId(OrderEntryPK entryId) {
+        this.entryId = entryId;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/OrderEntryIdClass.java

@@ -0,0 +1,31 @@
+package com.baeldung.hibernate.pojo;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.IdClass;
+
+@Entity
+@IdClass(OrderEntryPK.class)
+public class OrderEntryIdClass {
+    @Id
+    private long orderId;
+    @Id
+    private long productId;
+
+    public long getOrderId() {
+        return orderId;
+    }
+
+    public void setOrderId(long orderId) {
+        this.orderId = orderId;
+    }
+
+    public long getProductId() {
+        return productId;
+    }
+
+    public void setProductId(long productId) {
+        this.productId = productId;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/OrderEntryPK.java

@@ -0,0 +1,46 @@
+package com.baeldung.hibernate.pojo;
+
+import java.io.Serializable;
+import java.util.Objects;
+
+import javax.persistence.Embeddable;
+
+@Embeddable
+public class OrderEntryPK implements Serializable {
+
+    private long orderId;
+    private long productId;
+
+    public long getOrderId() {
+        return orderId;
+    }
+
+    public void setOrderId(long orderId) {
+        this.orderId = orderId;
+    }
+
+    public long getProductId() {
+        return productId;
+    }
+
+    public void setProductId(long productId) {
+        this.productId = productId;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        OrderEntryPK pk = (OrderEntryPK) o;
+        return Objects.equals(orderId, pk.orderId) && Objects.equals(productId, pk.productId);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(orderId, productId);
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/Person.java

@@ -0,0 +1,32 @@
+package com.baeldung.hibernate.pojo;
+
+import javax.persistence.Convert;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+
+import com.baeldung.hibernate.converters.PersonNameConverter;
+
+@Entity(name = "PersonTable")
+public class Person {
+
+    @Id
+    @GeneratedValue
+    private Long id;
+
+    @Convert(converter = PersonNameConverter.class)
+    private PersonName personName;
+
+    public PersonName getPersonName() {
+        return personName;
+    }
+
+    public void setPersonName(PersonName personName) {
+        this.personName = personName;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/PersonName.java

@@ -0,0 +1,29 @@
+package com.baeldung.hibernate.pojo;
+
+import java.io.Serializable;
+
+public class PersonName implements Serializable {
+
+    private static final long serialVersionUID = 7883094644631050150L;
+
+    private String name;
+
+    private String surname;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getSurname() {
+        return surname;
+    }
+
+    public void setSurname(String surname) {
+        this.surname = surname;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/Phone.java

@@ -0,0 +1,50 @@
+package com.baeldung.hibernate.pojo;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import java.io.Serializable;
+
+@Entity
+public class Phone implements Serializable {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Integer id;
+
+    private boolean deleted;
+
+    private String number;
+
+    public Phone() {
+    }
+
+    public Phone(String number) {
+        this.number = number;
+    }
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public boolean isDeleted() {
+        return deleted;
+    }
+
+    public void setDeleted(boolean deleted) {
+        this.deleted = deleted;
+    }
+
+    public String getNumber() {
+        return number;
+    }
+
+    public void setNumber(String number) {
+        this.number = number;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/PointEntity.java

@@ -0,0 +1,43 @@
+package com.baeldung.hibernate.pojo;
+
+import com.vividsolutions.jts.geom.Point;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+
+@Entity
+public class PointEntity {
+
+    @Id
+    @GeneratedValue
+    private Long id;
+
+    @Column(columnDefinition="BINARY(2048)")
+    private Point point;
+
+    public PointEntity() {
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Point getPoint() {
+        return point;
+    }
+
+    public void setPoint(Point point) {
+        this.point = point;
+    }
+
+    @Override
+    public String toString() {
+        return "PointEntity{" + "id=" + id + ", point=" + point + '}';
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/PolygonEntity.java

@@ -0,0 +1,38 @@
+package com.baeldung.hibernate.pojo;
+
+import com.vividsolutions.jts.geom.Polygon;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+
+@Entity
+public class PolygonEntity {
+
+    @Id
+    @GeneratedValue
+    private Long id;
+
+    private Polygon polygon;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Polygon getPolygon() {
+        return polygon;
+    }
+
+    public void setPolygon(Polygon polygon) {
+        this.polygon = polygon;
+    }
+
+    @Override
+    public String toString() {
+        return "PolygonEntity{" + "id=" + id + ", polygon=" + polygon + '}';
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/Post.java

@@ -0,0 +1,59 @@
+package com.baeldung.hibernate.pojo;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "posts")
+public class Post {
+
+    @Id
+    @GeneratedValue
+    private int id;
+
+    private String title;
+
+    private String body;
+
+    public Post() { }
+
+    public Post(String title, String body) {
+        this.title = title;
+        this.body = body;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getBody() {
+        return body;
+    }
+
+    public void setBody(String body) {
+        this.body = body;
+    }
+
+    @Override
+    public String toString() {
+        return "Post{" +
+                "id=" + id +
+                ", title='" + title + '\'' +
+                ", body='" + body + '\'' +
+                '}';
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/Product.java

@@ -0,0 +1,26 @@
+package com.baeldung.hibernate.pojo;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+
+import org.hibernate.annotations.GenericGenerator;
+import org.hibernate.annotations.Parameter;
+
+@Entity
+public class Product {
+
+    @Id
+    @GeneratedValue(generator = "prod-generator")
+    @GenericGenerator(name = "prod-generator", parameters = @Parameter(name = "prefix", value = "prod"), strategy = "com.baeldung.hibernate.pojo.generator.MyGenerator")
+    private String prodId;
+
+    public String getProdId() {
+        return prodId;
+    }
+
+    public void setProdId(String prodId) {
+        this.prodId = prodId;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/Result.java

@@ -0,0 +1,31 @@
+package com.baeldung.hibernate.pojo;
+
+public class Result {
+    private String employeeName;
+
+    private String departmentName;
+    
+    public Result(String employeeName, String departmentName) {
+        this.employeeName = employeeName;
+        this.departmentName = departmentName;
+    }
+
+    public Result() {
+    }
+
+    public String getEmployeeName() {
+        return employeeName;
+    }
+
+    public void setEmployeeName(String employeeName) {
+        this.employeeName = employeeName;
+    }
+
+    public String getDepartmentName() {
+        return departmentName;
+    }
+
+    public void setDepartmentName(String departmentName) {
+        this.departmentName = departmentName;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/Student.java

@@ -0,0 +1,51 @@
+package com.baeldung.hibernate.pojo;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@Entity
+public class Student {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    private long studentId;
+
+    private String name;
+
+    private int age;
+
+    public Student() {
+    }
+
+    public Student(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+
+    public long getStudentId() {
+        return studentId;
+    }
+
+    public void setStudentId(long studentId) {
+        this.studentId = studentId;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+    public void setAge(int age) {
+        this.age = age;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/TemporalValues.java

@@ -0,0 +1,195 @@
+package com.baeldung.hibernate.pojo;
+
+import javax.persistence.*;
+import java.io.Serializable;
+import java.sql.Date;
+import java.sql.Time;
+import java.sql.Timestamp;
+import java.time.*;
+import java.util.Calendar;
+
+@Entity
+public class TemporalValues implements Serializable {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private long id;
+
+    @Basic
+    private java.sql.Date sqlDate;
+
+    @Basic
+    private java.sql.Time sqlTime;
+
+    @Basic
+    private java.sql.Timestamp sqlTimestamp;
+
+    @Basic
+    @Temporal(TemporalType.DATE)
+    private java.util.Date utilDate;
+
+    @Basic
+    @Temporal(TemporalType.TIME)
+    private java.util.Date utilTime;
+
+    @Basic
+    @Temporal(TemporalType.TIMESTAMP)
+    private java.util.Date utilTimestamp;
+
+    @Basic
+    @Temporal(TemporalType.DATE)
+    private java.util.Calendar calendarDate;
+
+    @Basic
+    @Temporal(TemporalType.TIMESTAMP)
+    private java.util.Calendar calendarTimestamp;
+
+    @Basic
+    private java.time.LocalDate localDate;
+
+    @Basic
+    private java.time.LocalTime localTime;
+
+    @Basic
+    private java.time.OffsetTime offsetTime;
+
+    @Basic
+    private java.time.Instant instant;
+
+    @Basic
+    private java.time.LocalDateTime localDateTime;
+
+    @Basic
+    private java.time.OffsetDateTime offsetDateTime;
+
+    @Basic
+    private java.time.ZonedDateTime zonedDateTime;
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public Date getSqlDate() {
+        return sqlDate;
+    }
+
+    public void setSqlDate(Date sqlDate) {
+        this.sqlDate = sqlDate;
+    }
+
+    public Time getSqlTime() {
+        return sqlTime;
+    }
+
+    public void setSqlTime(Time sqlTime) {
+        this.sqlTime = sqlTime;
+    }
+
+    public Timestamp getSqlTimestamp() {
+        return sqlTimestamp;
+    }
+
+    public void setSqlTimestamp(Timestamp sqlTimestamp) {
+        this.sqlTimestamp = sqlTimestamp;
+    }
+
+    public java.util.Date getUtilDate() {
+        return utilDate;
+    }
+
+    public void setUtilDate(java.util.Date utilDate) {
+        this.utilDate = utilDate;
+    }
+
+    public java.util.Date getUtilTime() {
+        return utilTime;
+    }
+
+    public void setUtilTime(java.util.Date utilTime) {
+        this.utilTime = utilTime;
+    }
+
+    public java.util.Date getUtilTimestamp() {
+        return utilTimestamp;
+    }
+
+    public void setUtilTimestamp(java.util.Date utilTimestamp) {
+        this.utilTimestamp = utilTimestamp;
+    }
+
+    public Calendar getCalendarDate() {
+        return calendarDate;
+    }
+
+    public void setCalendarDate(Calendar calendarDate) {
+        this.calendarDate = calendarDate;
+    }
+
+    public Calendar getCalendarTimestamp() {
+        return calendarTimestamp;
+    }
+
+    public void setCalendarTimestamp(Calendar calendarTimestamp) {
+        this.calendarTimestamp = calendarTimestamp;
+    }
+
+    public LocalDate getLocalDate() {
+        return localDate;
+    }
+
+    public void setLocalDate(LocalDate localDate) {
+        this.localDate = localDate;
+    }
+
+    public LocalTime getLocalTime() {
+        return localTime;
+    }
+
+    public void setLocalTime(LocalTime localTime) {
+        this.localTime = localTime;
+    }
+
+    public OffsetTime getOffsetTime() {
+        return offsetTime;
+    }
+
+    public void setOffsetTime(OffsetTime offsetTime) {
+        this.offsetTime = offsetTime;
+    }
+
+    public Instant getInstant() {
+        return instant;
+    }
+
+    public void setInstant(Instant instant) {
+        this.instant = instant;
+    }
+
+    public LocalDateTime getLocalDateTime() {
+        return localDateTime;
+    }
+
+    public void setLocalDateTime(LocalDateTime localDateTime) {
+        this.localDateTime = localDateTime;
+    }
+
+    public OffsetDateTime getOffsetDateTime() {
+        return offsetDateTime;
+    }
+
+    public void setOffsetDateTime(OffsetDateTime offsetDateTime) {
+        this.offsetDateTime = offsetDateTime;
+    }
+
+    public ZonedDateTime getZonedDateTime() {
+        return zonedDateTime;
+    }
+
+    public void setZonedDateTime(ZonedDateTime zonedDateTime) {
+        this.zonedDateTime = zonedDateTime;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/User.java

@@ -0,0 +1,34 @@
+package com.baeldung.hibernate.pojo;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+import org.hibernate.annotations.GenericGenerator;
+import org.hibernate.annotations.Parameter;
+
+@Entity
+public class User {
+    @Id
+    @GeneratedValue(generator = "sequence-generator")
+    @GenericGenerator(
+        name = "sequence-generator",
+        strategy = "org.hibernate.id.enhanced.SequenceStyleGenerator",
+        parameters = {
+                @Parameter(name = "sequence_name", value = "user_sequence"),
+                @Parameter(name = "initial_value", value = "4"),
+                @Parameter(name = "increment_size", value = "1")
+        }
+    )
+    private long userId;
+
+    public long getUserId() {
+        return userId;
+    }
+
+    public void setUserId(long userId) {
+        this.userId = userId;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/UserProfile.java

@@ -0,0 +1,34 @@
+package com.baeldung.hibernate.pojo;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.MapsId;
+import javax.persistence.OneToOne;
+
+@Entity
+public class UserProfile {
+
+    @Id
+    private long profileId;
+
+    @OneToOne
+    @MapsId
+    private User user;
+
+    public long getProfileId() {
+        return profileId;
+    }
+
+    public void setProfileId(long profileId) {
+        this.profileId = profileId;
+    }
+    
+    public User getUser() {
+        return user;
+    }
+
+    public void setUser(User user) {
+        this.user = user;
+    }
+    
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/generator/MyGenerator.java

@@ -0,0 +1,41 @@
+package com.baeldung.hibernate.pojo.generator;
+
+import java.io.Serializable;
+import java.util.Properties;
+import java.util.stream.Stream;
+
+import org.hibernate.HibernateException;
+import org.hibernate.MappingException;
+import org.hibernate.engine.spi.SharedSessionContractImplementor;
+import org.hibernate.id.Configurable;
+import org.hibernate.id.IdentifierGenerator;
+import org.hibernate.service.ServiceRegistry;
+import org.hibernate.type.Type;
+
+public class MyGenerator implements IdentifierGenerator, Configurable {
+
+    private String prefix;
+
+    @Override
+    public Serializable generate(SharedSessionContractImplementor session, Object obj) throws HibernateException {
+
+        String query = String.format("select %s from %s", 
+            session.getEntityPersister(obj.getClass().getName(), obj).getIdentifierPropertyName(),
+            obj.getClass().getSimpleName());
+
+        Stream<String> ids = session.createQuery(query).stream();
+
+        Long max = ids.map(o -> o.replace(prefix + "-", ""))
+            .mapToLong(Long::parseLong)
+            .max()
+            .orElse(0L);
+
+        return prefix + "-" + (max + 1);
+    }
+
+    @Override
+    public void configure(Type type, Properties properties, ServiceRegistry serviceRegistry) throws MappingException {
+        prefix = properties.getProperty("prefix");
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/inheritance/Animal.java

@@ -0,0 +1,40 @@
+package com.baeldung.hibernate.pojo.inheritance;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Inheritance;
+import javax.persistence.InheritanceType;
+
+@Entity
+@Inheritance(strategy = InheritanceType.JOINED)
+public class Animal {
+
+    @Id
+    private long animalId;
+
+    private String species;
+    
+    public Animal() {}    
+
+    public Animal(long animalId, String species) {
+        this.animalId = animalId;
+        this.species = species;
+    }
+
+    public long getAnimalId() {
+        return animalId;
+    }
+
+    public void setAnimalId(long animalId) {
+        this.animalId = animalId;
+    }
+
+    public String getSpecies() {
+        return species;
+    }
+
+    public void setSpecies(String species) {
+        this.species = species;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/inheritance/Bag.java

@@ -0,0 +1,38 @@
+package com.baeldung.hibernate.pojo.inheritance;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+
+import org.hibernate.annotations.Polymorphism;
+import org.hibernate.annotations.PolymorphismType;
+
+@Entity
+@Polymorphism(type = PolymorphismType.EXPLICIT)
+public class Bag implements Item {
+
+    @Id
+    private long bagId;
+
+    private String type;
+
+    public Bag(long bagId, String type) {
+        this.bagId = bagId;
+        this.type = type;
+    }
+
+    public long getBagId() {
+        return bagId;
+    }
+
+    public void setBagId(long bagId) {
+        this.bagId = bagId;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/inheritance/Book.java

@@ -0,0 +1,27 @@
+package com.baeldung.hibernate.pojo.inheritance;
+
+import javax.persistence.DiscriminatorValue;
+import javax.persistence.Entity;
+
+@Entity
+@DiscriminatorValue("1")
+public class Book extends MyProduct {
+    private String author;
+
+    public Book() {
+    }
+
+    public Book(long productId, String name, String author) {
+        super(productId, name);
+        this.author = author;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/inheritance/Car.java

@@ -0,0 +1,25 @@
+package com.baeldung.hibernate.pojo.inheritance;
+
+import javax.persistence.Entity;
+
+@Entity
+public class Car extends Vehicle {
+    private String engine;
+
+    public Car() {
+    }
+
+    public Car(long vehicleId, String manufacturer, String engine) {
+        super(vehicleId, manufacturer);
+        this.engine = engine;
+    }
+
+    public String getEngine() {
+        return engine;
+    }
+
+    public void setEngine(String engine) {
+        this.engine = engine;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/inheritance/Item.java

@@ -0,0 +1,5 @@
+package com.baeldung.hibernate.pojo.inheritance;
+
+public interface Item {
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/inheritance/MyEmployee.java

@@ -0,0 +1,22 @@
+package com.baeldung.hibernate.pojo.inheritance;
+
+import javax.persistence.Entity;
+
+@Entity
+public class MyEmployee extends Person {
+    private String company;
+
+    public MyEmployee(long personId, String name, String company) {
+        super(personId, name);
+        this.company = company;
+    }
+
+    public String getCompany() {
+        return company;
+    }
+
+    public void setCompany(String company) {
+        this.company = company;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/inheritance/MyProduct.java

@@ -0,0 +1,47 @@
+package com.baeldung.hibernate.pojo.inheritance;
+
+import javax.persistence.DiscriminatorColumn;
+import javax.persistence.DiscriminatorType;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Inheritance;
+import javax.persistence.InheritanceType;
+
+import org.hibernate.annotations.DiscriminatorFormula;
+
+@Entity
+@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
+@DiscriminatorColumn(name = "product_type", discriminatorType = DiscriminatorType.INTEGER)
+// @DiscriminatorFormula("case when author is not null then 1 else 2 end")
+public class MyProduct {
+    @Id
+    private long productId;
+
+    private String name;
+
+    public MyProduct() {
+    }
+
+    public MyProduct(long productId, String name) {
+        super();
+        this.productId = productId;
+        this.name = name;
+    }
+
+    public long getProductId() {
+        return productId;
+    }
+
+    public void setProductId(long productId) {
+        this.productId = productId;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/inheritance/Pen.java

@@ -0,0 +1,27 @@
+package com.baeldung.hibernate.pojo.inheritance;
+
+import javax.persistence.DiscriminatorValue;
+import javax.persistence.Entity;
+
+@Entity
+@DiscriminatorValue("2")
+public class Pen extends MyProduct {
+    private String color;
+
+    public Pen() {
+    }
+
+    public Pen(long productId, String name, String color) {
+        super(productId, name);
+        this.color = color;
+    }
+
+    public String getColor() {
+        return color;
+    }
+
+    public void setColor(String color) {
+        this.color = color;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/inheritance/Person.java

@@ -0,0 +1,38 @@
+package com.baeldung.hibernate.pojo.inheritance;
+
+import javax.persistence.Id;
+import javax.persistence.MappedSuperclass;
+
+@MappedSuperclass
+public class Person {
+
+    @Id
+    private long personId;
+
+    private String name;
+
+    public Person() {
+    }
+
+    public Person(long personId, String name) {
+        this.personId = personId;
+        this.name = name;
+    }
+
+    public long getPersonId() {
+        return personId;
+    }
+
+    public void setPersonId(long personId) {
+        this.personId = personId;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/inheritance/Pet.java

@@ -0,0 +1,27 @@
+package com.baeldung.hibernate.pojo.inheritance;
+
+import javax.persistence.Entity;
+import javax.persistence.PrimaryKeyJoinColumn;
+
+@Entity
+@PrimaryKeyJoinColumn(name = "petId")
+public class Pet extends Animal {
+    private String name;
+
+    public Pet() {
+    }
+
+    public Pet(long animalId, String species, String name) {
+        super(animalId, species);
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/inheritance/Vehicle.java

@@ -0,0 +1,40 @@
+package com.baeldung.hibernate.pojo.inheritance;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Inheritance;
+import javax.persistence.InheritanceType;
+
+@Entity
+@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
+public class Vehicle {
+    @Id
+    private long vehicleId;
+
+    private String manufacturer;
+
+    public Vehicle() {
+    }
+
+    public Vehicle(long vehicleId, String manufacturer) {
+        this.vehicleId = vehicleId;
+        this.manufacturer = manufacturer;
+    }
+
+    public long getVehicleId() {
+        return vehicleId;
+    }
+
+    public void setVehicleId(long vehicleId) {
+        this.vehicleId = vehicleId;
+    }
+
+    public String getManufacturer() {
+        return manufacturer;
+    }
+
+    public void setManufacturer(String manufacturer) {
+        this.manufacturer = manufacturer;
+    }
+
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/package-info.java

@@ -0,0 +1,9 @@
+@AnyMetaDef(name = "EntityDescriptionMetaDef", metaType = "string", idType = "int",
+        metaValues = {
+                @MetaValue(value = "Employee", targetEntity = Employee.class),
+                @MetaValue(value = "Phone", targetEntity = Phone.class)
+        })
+package com.baeldung.hibernate.pojo;
+
+import org.hibernate.annotations.AnyMetaDef;
+import org.hibernate.annotations.MetaValue;

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/proxy/Company.java

@@ -0,0 +1,62 @@
+package com.baeldung.hibernate.proxy;
+
+import javax.persistence.*;
+import java.io.Serializable;
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Set;
+
+@Entity
+public class Company implements Serializable {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    private Long id;
+
+    @Column(name = "name")
+    private String name;
+
+    @OneToMany
+    @JoinColumn(name = "workplace_id")
+    private Set<Employee> employees = new HashSet<>();
+
+    public Company() { }
+
+    public Company(String name) {
+        this.name = name;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Set<Employee> getEmployees() {
+        return this.employees;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Company company = (Company) o;
+        return Objects.equals(id, company.id) &&
+                Objects.equals(name, company.name);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, name);
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/proxy/Employee.java

@@ -0,0 +1,69 @@
+package com.baeldung.hibernate.proxy;
+
+import org.hibernate.annotations.BatchSize;
+
+import javax.persistence.*;
+import java.io.Serializable;
+import java.util.Objects;
+
+@Entity
+@BatchSize(size = 5)
+public class Employee implements Serializable {
+
+    @Id
+    @GeneratedValue (strategy = GenerationType.SEQUENCE)
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "workplace_id")
+    private Company workplace;
+
+    @Column(name = "first_name")
+    private String firstName;
+
+    public Employee() { }
+
+    public Employee(Company workplace, String firstName) {
+        this.workplace = workplace;
+        this.firstName = firstName;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Company getWorkplace() {
+        return workplace;
+    }
+
+    public void setWorkplace(Company workplace) {
+        this.workplace = workplace;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Employee employee = (Employee) o;
+        return Objects.equals(id, employee.id) &&
+                Objects.equals(workplace, employee.workplace) &&
+                Objects.equals(firstName, employee.firstName);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, workplace, firstName);
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/proxy/HibernateUtil.java

@@ -0,0 +1,57 @@
+package com.baeldung.hibernate.proxy;
+
+import org.apache.commons.lang3.StringUtils;
+import org.hibernate.SessionFactory;
+import org.hibernate.boot.Metadata;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.SessionFactoryBuilder;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.service.ServiceRegistry;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.net.URL;
+import java.util.Properties;
+
+public class HibernateUtil {
+
+    private static SessionFactory sessionFactory;
+    private static String PROPERTY_FILE_NAME;
+
+    public static SessionFactory getSessionFactory(String propertyFileName) throws IOException {
+        PROPERTY_FILE_NAME = propertyFileName;
+        if (sessionFactory == null) {
+            ServiceRegistry serviceRegistry = configureServiceRegistry();
+            sessionFactory = getSessionFactoryBuilder(serviceRegistry).build();
+        }
+        return sessionFactory;
+    }
+
+    private static SessionFactoryBuilder getSessionFactoryBuilder(ServiceRegistry serviceRegistry) {
+        MetadataSources metadataSources = new MetadataSources(serviceRegistry);
+        metadataSources.addPackage("com.baeldung.hibernate.proxy");
+        metadataSources.addAnnotatedClass(Company.class);
+        metadataSources.addAnnotatedClass(Employee.class);
+
+        Metadata metadata = metadataSources.buildMetadata();
+        return metadata.getSessionFactoryBuilder();
+
+    }
+
+    private static ServiceRegistry configureServiceRegistry() throws IOException {
+        Properties properties = getProperties();
+        return new StandardServiceRegistryBuilder().applySettings(properties)
+            .build();
+    }
+
+    private static Properties getProperties() throws IOException {
+        Properties properties = new Properties();
+        URL propertiesURL = Thread.currentThread()
+            .getContextClassLoader()
+            .getResource(StringUtils.defaultString(PROPERTY_FILE_NAME, "hibernate.properties"));
+        try (FileInputStream inputStream = new FileInputStream(propertiesURL.getFile())) {
+            properties.load(inputStream);
+        }
+        return properties;
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/transaction/PostService.java

@@ -0,0 +1,29 @@
+package com.baeldung.hibernate.transaction;
+
+import org.hibernate.Session;
+import org.hibernate.Transaction;
+import org.hibernate.query.Query;
+
+public class PostService {
+
+
+    private Session session;
+
+    public PostService(Session session) {
+        this.session = session;
+    }
+
+
+    public void updatePost(String title, String body, int id) {
+        Transaction txn = session.beginTransaction();
+        Query updateQuery = session.createQuery("UPDATE Post p SET p.title = ?1, p.body = ?2 WHERE p.id = ?3");
+        updateQuery.setParameter(1, title);
+        updateQuery.setParameter(2, body);
+        updateQuery.setParameter(3, id);
+        updateQuery.executeUpdate();
+        txn.commit();
+    }
+
+
+
+}

persistence-modules/hibernate5/src/main/resources/META-INF/persistence.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<persistence xmlns="http://java.sun.com/xml/ns/persistence"
+             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+             xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
+             version="2.0">
+    <persistence-unit name="com.baeldung.movie_catalog">
+        <description>Hibernate EntityManager Demo</description>
+        <class>com.baeldung.hibernate.pojo.Movie</class> 
+        <exclude-unlisted-classes>true</exclude-unlisted-classes>
+        <properties>
+            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect"/>
+            <property name="hibernate.hbm2ddl.auto" value="update"/>
+            <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
+            <property name="javax.persistence.jdbc.url" value="jdbc:mysql://127.0.0.1:3306/moviecatalog"/>
+            <property name="javax.persistence.jdbc.user" value="root"/>
+            <property name="javax.persistence.jdbc.password" value="root"/>
+        </properties>
+    </persistence-unit>
+</persistence> 

persistence-modules/hibernate5/src/main/resources/init_database.sql

@@ -0,0 +1,10 @@
+CREATE ALIAS UPDATE_EMPLOYEE_DESIGNATION AS $$
+import java.sql.CallableStatement;
+import java.sql.Connection;
+import java.sql.SQLException;
+@CODE
+void updateEmployeeDesignation(final Connection conn, final String employeeNumber, final String title) throws SQLException {
+        CallableStatement updateStatement = conn.prepareCall("update deptemployee set title = '" + title + "' where employeeNumber = '" + employeeNumber + "'");
+        updateStatement.execute();
+}
+$$;