Merge branch 'master' into BAEL-3985

persistence-modules/activejdbc/pom.xml

@@ -10,9 +10,8 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>persistence-modules</artifactId>
         <version>1.0.0-SNAPSHOT</version>
-        <relativePath>../../</relativePath>
     </parent>
 
     <dependencies>
@@ -41,16 +40,6 @@
 
     <build>
         <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${java.version}</source>
-                    <target>${java.version}</target>
-                    <encoding>UTF-8</encoding>
-                </configuration>
-            </plugin>
             <plugin>
                 <groupId>org.javalite</groupId>
                 <artifactId>activejdbc-instrumentation</artifactId>

persistence-modules/apache-cayenne/pom.xml

@@ -10,9 +10,8 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>persistence-modules</artifactId>
         <version>1.0.0-SNAPSHOT</version>
-        <relativePath>../../</relativePath>
     </parent>
 
     <dependencies>

persistence-modules/core-java-persistence/pom.xml

@@ -10,9 +10,8 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-java</artifactId>
-        <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../parent-java</relativePath>
+        <artifactId>persistence-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
     </parent>
 
     <dependencies>
@@ -60,19 +59,8 @@
         </dependency>
     </dependencies>
 
-    <build>
-        <finalName>core-java-persistence</finalName>
-        <resources>
-            <resource>
-                <directory>src/main/resources</directory>
-                <filtering>true</filtering>
-            </resource>
-        </resources>
-    </build>
-
     <properties>
         <postgresql.version>42.2.5.jre7</postgresql.version>
-        <mysql-connector.version>8.0.15</mysql-connector.version>
         <assertj-core.version>3.10.0</assertj-core.version>
         <commons-dbcp2.version>2.4.0</commons-dbcp2.version>
         <HikariCP.version>3.2.0</HikariCP.version>

persistence-modules/core-java-persistence/src/main/java/com/baeldung/connectionpool/BasicConnectionPool.java

@@ -14,7 +14,8 @@ public class BasicConnectionPool implements ConnectionPool {
     private final List<Connection> connectionPool;
     private final List<Connection> usedConnections = new ArrayList<>();
     private static final int INITIAL_POOL_SIZE = 10;
-    private final int MAX_POOL_SIZE = 20;
+    private static final int MAX_POOL_SIZE = 20;
+    private static final int MAX_TIMEOUT = 5;
 
     public static BasicConnectionPool create(String url, String user, String password) throws SQLException {
         List<Connection> pool = new ArrayList<>(INITIAL_POOL_SIZE);
@@ -42,6 +43,11 @@ public class BasicConnectionPool implements ConnectionPool {
         }
 
         Connection connection = connectionPool.remove(connectionPool.size() - 1);
+
+        if(!connection.isValid(MAX_TIMEOUT)){
+            connection = createConnection(url, user, password);
+        }
+
         usedConnections.add(connection);
         return connection;
     }

persistence-modules/deltaspike/pom.xml

@@ -11,9 +11,8 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>persistence-modules</artifactId>
         <version>1.0.0-SNAPSHOT</version>
-        <relativePath>../../</relativePath>
     </parent>
 
     <dependencies>

persistence-modules/elasticsearch/pom.xml

@@ -9,9 +9,8 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>persistence-modules</artifactId>
         <version>1.0.0-SNAPSHOT</version>
-        <relativePath>../../</relativePath>
     </parent>
 
     <dependencies>

persistence-modules/flyway/pom.xml

@@ -9,9 +9,9 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-boot-1</artifactId>
+        <artifactId>parent-boot-2</artifactId>
         <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../parent-boot-1</relativePath>
+        <relativePath>../../parent-boot-2</relativePath>
     </parent>
 
     <dependencies>
@@ -63,7 +63,7 @@
     </build>
 
     <properties>
-        <flyway-core.version>5.0.2</flyway-core.version>
+        <flyway-core.version>5.2.3</flyway-core.version>
         <flyway-maven-plugin.version>5.0.2</flyway-maven-plugin.version>
     </properties>
 

persistence-modules/flyway/src/main/resources/application.properties

@@ -1 +1 @@
-#flyway.enabled=false
+#spring.flyway.enabled=false

persistence-modules/hbase/README.md

@@ -1,3 +1,3 @@
 ### Relevant articles
 
-- [HBase with Java](http://www.baeldung.com/hbase)
+- [HBase with Java](https://www.baeldung.com/hbase)

persistence-modules/hbase/pom.xml

@@ -7,9 +7,8 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>persistence-modules</artifactId>
         <version>1.0.0-SNAPSHOT</version>
-        <relativePath>../../</relativePath>
     </parent>
 
     <dependencies>

persistence-modules/hbase/src/main/java/com/baeldung/hbase/HBaseClientOperations.java

@@ -1,4 +1,4 @@
-package org.baeldung.hbase;
+package com.baeldung.hbase;
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.HColumnDescriptor;

persistence-modules/hbase/src/main/java/com/baeldung/hbase/HbaseClientExample.java

@@ -1,4 +1,4 @@
-package org.baeldung.hbase;
+package com.baeldung.hbase;
 
 
 import com.google.protobuf.ServiceException;

persistence-modules/hibernate-annotations/README.md

@@ -0,0 +1,10 @@
+## Hibernate Annotations
+
+This module contains articles about Annotations used in Hibernate.
+
+### Relevant Articles:
+- [Custom Types in Hibernate and the @Type Annotation](https://www.baeldung.com/hibernate-custom-types)
+- [@JoinColumn Annotation Explained](https://www.baeldung.com/jpa-join-column)
+- [Difference Between @JoinColumn and mappedBy](https://www.baeldung.com/jpa-joincolumn-vs-mappedby)
+- [Hibernate One to Many Annotation Tutorial](https://www.baeldung.com/hibernate-one-to-many)
+- [Hibernate @WhereJoinTable Annotation](https://www.baeldung.com/hibernate-wherejointable)

persistence-modules/hibernate-annotations/pom.xml

@@ -0,0 +1,74 @@
+<?xml version="1.0"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>hibernate-annotations</artifactId>
+    <version>0.1-SNAPSHOT</version>
+    <name>hibernate-annotations</name>
+    <packaging>jar</packaging>
+    <description>Hibernate tutorial illustrating the use of named parameters</description>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>persistence-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-core</artifactId>
+            <version>${hibernate-core.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <version>${h2.version}</version>
+        </dependency>
+
+        <dependency>
+        	<groupId>org.apache.commons</groupId>
+        	<artifactId>commons-lang3</artifactId>
+        	<version>${commons.lang3.version}</version>
+        </dependency>
+        
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-testing</artifactId>
+            <version>${hibernate-core.version}</version>
+        </dependency>
+        
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-spatial</artifactId>
+            <version>${hibernate-core.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.opengeo</groupId>
+            <artifactId>geodb</artifactId>
+            <version>${geodb.version}</version>
+        </dependency>
+    </dependencies>
+    
+    <repositories>
+        <repository>
+            <id>geodb-repo</id>
+            <name>GeoDB repository</name>
+            <url>http://repo.boundlessgeo.com/main/</url>
+        </repository>
+    </repositories>
+
+    <properties>
+        <hibernate-core.version>5.4.7.Final</hibernate-core.version>
+        <h2.version>1.4.200</h2.version>
+        <commons-lang3.version>3.8.1</commons-lang3.version>
+        <maven.deploy.skip>true</maven.deploy.skip>
+        <spring-boot.version>2.1.7.RELEASE</spring-boot.version>
+        <hibernate.core.version>5.4.7.Final</hibernate.core.version>
+        <h2.version>1.4.200</h2.version>
+        <commons.lang3.version>3.8.1</commons.lang3.version>
+        <geodb.version>0.9</geodb.version>
+    </properties>
+
+</project>

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

@@ -0,0 +1,73 @@
+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.joincolumn.Email;
+import com.baeldung.hibernate.joincolumn.Office;
+import com.baeldung.hibernate.joincolumn.OfficeAddress;
+
+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(com.baeldung.hibernate.joincolumn.OfficialEmployee.class);
+        metadataSources.addAnnotatedClass(Email.class);
+        metadataSources.addAnnotatedClass(Office.class);
+        metadataSources.addAnnotatedClass(OfficeAddress.class);
+
+        Metadata metadata = metadataSources.getMetadataBuilder()
+                .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/hibernate-annotations/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/hibernate-annotations/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/hibernate-annotations/src/main/resources/META-INF/persistence.xml

@@ -0,0 +1,18 @@
+<?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> 
+        <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/hibernate-annotations/src/main/resources/logback.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

persistence-modules/hibernate-enterprise/README.md

@@ -0,0 +1,12 @@
+## Hibernate Enterprise
+
+This module contains articles about enterprise concerns such as Multitenancy, Errors, Exceptions, Logging and more in Hibernate.
+
+### Relevant articles:
+
+- [Introduction to Hibernate Spatial](https://www.baeldung.com/hibernate-spatial)
+- [A Guide to Multitenancy in Hibernate 5](https://www.baeldung.com/hibernate-5-multitenancy)
+- [Hibernate Aggregate Functions](https://www.baeldung.com/hibernate-aggregate-functions)
+- [Common Hibernate Exceptions](https://www.baeldung.com/hibernate-exceptions)
+- [Hibernate Error “Not all named parameters have been set”](https://www.baeldung.com/hibernate-error-named-parameters-not-set)
+- [Various Logging Levels in Hibernate](https://www.baeldung.com/hibernate-logging-levels)

persistence-modules/hibernate-enterprise/pom.xml

@@ -0,0 +1,76 @@
+<?xml version="1.0"?>
+<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+         xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>hibernate-enterprise</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>hibernate-enterprise</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>persistence-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-core</artifactId>
+            <version>${hibernate.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${assertj-core.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <version>${h2.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-spatial</artifactId>
+            <version>${hibernate.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.opengeo</groupId>
+            <artifactId>geodb</artifactId>
+            <version>${geodb.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <version>${mysql.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>ch.vorburger.mariaDB4j</groupId>
+            <artifactId>mariaDB4j</artifactId>
+            <version>${mariaDB4j.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-testing</artifactId>
+            <version>${hibernate.version}</version>
+        </dependency>
+    </dependencies>
+
+    <repositories>
+        <repository>
+            <id>geodb-repo</id>
+            <name>GeoDB repository</name>
+            <url>http://repo.boundlessgeo.com/main/</url>
+        </repository>
+    </repositories>
+
+    <properties>
+        <hibernate.version>5.3.7.Final</hibernate.version>
+        <mysql.version>6.0.6</mysql.version>
+        <mariaDB4j.version>2.2.3</mariaDB4j.version>
+        <assertj-core.version>3.8.0</assertj-core.version>
+        <geodb.version>0.9</geodb.version>
+    </properties>
+
+</project>

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

@@ -0,0 +1,72 @@
+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.pojo.PointEntity;
+import com.baeldung.hibernate.pojo.PolygonEntity;
+import com.baeldung.hibernate.pojo.Student;
+
+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(Student.class);
+        metadataSources.addAnnotatedClass(PointEntity.class);
+        metadataSources.addAnnotatedClass(PolygonEntity.class);
+
+        Metadata metadata = metadataSources.getMetadataBuilder()
+                .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/hibernate-enterprise/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/hibernate-enterprise/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/hibernate-enterprise/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/hibernate-enterprise/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/hibernate-enterprise/src/main/resources/META-INF/persistence.xml

@@ -0,0 +1,18 @@
+<?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> 
+        <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/hibernate-enterprise/src/main/resources/init_database.sql

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

persistence-modules/hibernate-enterprise/src/main/resources/logback.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

persistence-modules/hibernate-enterprise/src/test/java/com/baeldung/hibernate/logging/HibernateLoggingIntegrationTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.hibernatelogging;
+package com.baeldung.hibernate.logging;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.fail;

persistence-modules/hibernate-enterprise/src/test/resources/hibernate-spatial.properties

@@ -0,0 +1,14 @@
+hibernate.connection.driver_class=org.h2.Driver
+hibernate.connection.url=jdbc:h2:mem:mydb1;DB_CLOSE_DELAY=-1
+hibernate.connection.username=sa
+hibernate.connection.autocommit=true
+jdbc.password=
+
+hibernate.dialect=org.hibernate.spatial.dialect.h2geodb.GeoDBDialect
+hibernate.show_sql=true
+hibernate.hbm2ddl.auto=create-drop
+
+hibernate.c3p0.min_size=5
+hibernate.c3p0.max_size=20
+hibernate.c3p0.acquire_increment=5
+hibernate.c3p0.timeout=1800

persistence-modules/hibernate-enterprise/src/test/resources/lifecycle-init.sql

@@ -0,0 +1,25 @@
+create sequence hibernate_sequence start with 1 increment by 1;
+
+create table Football_Player (
+  id bigint not null,
+  name varchar(255),
+  primary key (id)
+);
+
+insert into
+    Football_Player
+        (name, id)
+    values
+        ('Cristiano Ronaldo', next value for hibernate_sequence);
+
+insert into
+    Football_Player
+        (name, id)
+    values
+        ('Lionel Messi', next value for hibernate_sequence);
+
+insert into
+    Football_Player
+        (name, id)
+    values
+        ('Gigi Buffon', next value for hibernate_sequence);

persistence-modules/hibernate-jpa/README.md

@@ -0,0 +1,17 @@
+## Hibernate JPA
+
+This module contains articles specific to use of Hibernate as a JPA implementation, such as Locking, Bootstrapping, One-to-One Relationship, Persistence Context, and more.
+
+### Relevant articles:
+
+- [JPA Attribute Converters](https://www.baeldung.com/jpa-attribute-converters)
+- [Pessimistic Locking in JPA](https://www.baeldung.com/jpa-pessimistic-locking)
+- [Bootstrapping JPA Programmatically in Java](http://www.baeldung.com/java-bootstrap-jpa)
+- [Optimistic Locking in JPA](https://www.baeldung.com/jpa-optimistic-locking)
+- [Criteria API – An Example of IN Expressions](https://www.baeldung.com/jpa-criteria-api-in-expressions)
+- [One-to-One Relationship in JPA](https://www.baeldung.com/jpa-one-to-one)
+- [Enabling Transaction Locks in Spring Data JPA](https://www.baeldung.com/java-jpa-transaction-locks)
+- [TransactionRequiredException Error](https://www.baeldung.com/jpa-transaction-required-exception)
+- [JPA/Hibernate Persistence Context](https://www.baeldung.com/jpa-hibernate-persistence-context)
+- [Quick Guide to EntityManager#getReference()](https://www.baeldung.com/jpa-entity-manager-get-reference)
+- [Hibernate Error “No Persistence Provider for EntityManager”](https://www.baeldung.com/hibernate-no-persistence-provider)

persistence-modules/hibernate-jpa/pom.xml

@@ -0,0 +1,101 @@
+<?xml version="1.0"?>
+<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+         xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>hibernate-jpa</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>hibernate-jpa</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>persistence-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-core</artifactId>
+            <version>${hibernate.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+            <version>${spring-boot.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-thymeleaf</artifactId>
+            <version>${spring-boot.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+            <version>${spring-boot.version}</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>com.zaxxer</groupId>
+                    <artifactId>HikariCP</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <version>${spring-boot.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${assertj-core.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <version>${h2.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-spatial</artifactId>
+            <version>${hibernate.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <version>${mysql.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>ch.vorburger.mariaDB4j</groupId>
+            <artifactId>mariaDB4j</artifactId>
+            <version>${mariaDB4j.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-testing</artifactId>
+            <version>${hibernate.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-generator-annprocess</artifactId>
+            <version>${openjdk-jmh.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.postgresql</groupId>
+            <artifactId>postgresql</artifactId>
+            <version>${postgresql.version}</version>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <hibernate.version>5.3.7.Final</hibernate.version>
+        <mysql.version>8.0.13</mysql.version>
+        <postgresql.version>42.2.11</postgresql.version>
+        <mariaDB4j.version>2.2.3</mariaDB4j.version>
+        <assertj-core.version>3.8.0</assertj-core.version>
+        <openjdk-jmh.version>1.21</openjdk-jmh.version>
+        <spring-boot.version>2.1.7.RELEASE</spring-boot.version>
+    </properties>
+
+</project>

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

@@ -0,0 +1,89 @@
+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.entities.DeptEmployee;
+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.Person;
+import com.baeldung.hibernate.pojo.Post;
+import com.baeldung.hibernate.pojo.Student;
+
+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(Person.class);
+        metadataSources.addAnnotatedClass(Student.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(Post.class);
+
+        Metadata metadata = metadataSources.getMetadataBuilder()
+                .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/hibernate-jpa/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/hibernate-jpa/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;
+    }
+}