BAEL-20262: Migrate spring-exceptions module to the com.baeldung package

2019-12-20 12:32:07 +01:00
parent b8e73d5b8c
commit 98bdc464da
143 changed files with 326 additions and 337 deletions
@@ -0,0 +1,12 @@
+package com.baeldung.ex.beancreationexception.cause1;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanA {
+
+    @Autowired
+    private BeanB dependency;
+
+}
@@ -0,0 +1,5 @@
+package com.baeldung.ex.beancreationexception.cause1;
+
+public class BeanB {
+    //
+}
@@ -0,0 +1,12 @@
+package com.baeldung.ex.beancreationexception.cause2;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanA {
+
+    @Autowired
+    private IBeanB dependency;
+
+}
@@ -0,0 +1,8 @@
+package com.baeldung.ex.beancreationexception.cause2;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanB1 implements IBeanB {
+    //
+}
@@ -0,0 +1,8 @@
+package com.baeldung.ex.beancreationexception.cause2;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanB2 implements IBeanB {
+    //
+}
@@ -0,0 +1,5 @@
+package com.baeldung.ex.beancreationexception.cause2;
+
+public interface IBeanB {
+    //
+}
@@ -0,0 +1,12 @@
+package com.baeldung.ex.beancreationexception.cause3;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanA {
+
+    public BeanA() {
+        super();
+        throw new NullPointerException();
+    }
+}
@@ -0,0 +1,8 @@
+package com.baeldung.ex.beancreationexception.cause4;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public abstract class BeanA implements IBeanA {
+    //
+}
@@ -0,0 +1,5 @@
+package com.baeldung.ex.beancreationexception.cause4;
+
+public interface IBeanA {
+    //
+}
@@ -0,0 +1,13 @@
+package com.baeldung.ex.beancreationexception.cause5;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanA implements IBeanA {
+
+    public BeanA(final String name) {
+        super();
+        System.out.println(name);
+    }
+
+}
@@ -0,0 +1,5 @@
+package com.baeldung.ex.beancreationexception.cause5;
+
+public interface IBeanA {
+    //
+}
@@ -0,0 +1,8 @@
+package com.baeldung.ex.beancreationexception.cause6;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanA {
+    private IBeanB dependency;
+}
@@ -0,0 +1,8 @@
+package com.baeldung.ex.beancreationexception.cause6;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanB implements IBeanB {
+    //
+}
@@ -0,0 +1,5 @@
+package com.baeldung.ex.beancreationexception.cause6;
+
+public interface IBeanB {
+    //
+}
@@ -0,0 +1,16 @@
+package com.baeldung.ex.beancreationexception.cause8;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanA implements IBeanA {
+    private IBeanB beanB;
+
+    @Autowired
+    public BeanA(final IBeanB beanB) {
+        super();
+        this.beanB = beanB;
+    }
+
+}
@@ -0,0 +1,15 @@
+package com.baeldung.ex.beancreationexception.cause8;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanB implements IBeanB {
+    final IBeanA beanA;
+
+    @Autowired
+    public BeanB(final IBeanA beanA) {
+        super();
+        this.beanA = beanA;
+    }
+}
@@ -0,0 +1,5 @@
+package com.baeldung.ex.beancreationexception.cause8;
+
+public interface IBeanA {
+    //
+}
@@ -0,0 +1,5 @@
+package com.baeldung.ex.beancreationexception.cause8;
+
+public interface IBeanB {
+    //
+}
@@ -0,0 +1,5 @@
+package com.baeldung.ex.beancreationexception.cause9;
+
+public abstract class BeanA implements IBeanA {
+    //
+}
@@ -0,0 +1,5 @@
+package com.baeldung.ex.beancreationexception.cause9;
+
+public class BeanB {
+    //
+}
@@ -0,0 +1,5 @@
+package com.baeldung.ex.beancreationexception.cause9;
+
+public interface IBeanA {
+    //
+}
@@ -0,0 +1,16 @@
+package com.baeldung.ex.beancreationexception.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.beancreationexception.cause1")
+public class Cause1ContextWithJavaConfig {
+
+    public Cause1ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}
@@ -0,0 +1,16 @@
+package com.baeldung.ex.beancreationexception.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.beancreationexception.cause2")
+public class Cause2ContextWithJavaConfig {
+
+    public Cause2ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}
@@ -0,0 +1,16 @@
+package com.baeldung.ex.beancreationexception.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.beancreationexception.cause3")
+public class Cause3ContextWithJavaConfig {
+
+    public Cause3ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}
@@ -0,0 +1,18 @@
+package com.baeldung.ex.beancreationexception.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.ImportResource;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.beancreationexception.cause4")
+@ImportResource("classpath:beancreationexception_cause4.xml")
+public class Cause4ContextWithJavaConfig {
+
+    public Cause4ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}
@@ -0,0 +1,16 @@
+package com.baeldung.ex.beancreationexception.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.beancreationexception.cause5")
+public class Cause5ContextWithJavaConfig {
+
+    public Cause5ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}
@@ -0,0 +1,18 @@
+package com.baeldung.ex.beancreationexception.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.ImportResource;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.beancreationexception.cause6")
+@ImportResource("classpath:beancreationexception_cause6.xml")
+public class Cause6ContextWithJavaConfig {
+
+    public Cause6ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}
@@ -0,0 +1,18 @@
+package com.baeldung.ex.beancreationexception.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.ImportResource;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.beancreationexception.cause7")
+@ImportResource("classpath:beancreationexception_cause7.xml")
+public class Cause7ContextWithJavaConfig {
+
+    public Cause7ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}
@@ -0,0 +1,16 @@
+package com.baeldung.ex.beancreationexception.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.beancreationexception.cause8")
+public class Cause8ContextWithJavaConfig {
+
+    public Cause8ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}
@@ -0,0 +1,30 @@
+package com.baeldung.ex.beancreationexception.spring;
+
+import com.baeldung.ex.beancreationexception.cause9.BeanB;
+import org.springframework.beans.factory.BeanFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.ImportResource;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.beancreationexception.cause9")
+@ImportResource("classpath:beancreationexception_cause9.xml")
+public class Cause9ContextWithJavaConfig {
+    @Autowired
+    BeanFactory beanFactory;
+
+    public Cause9ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+    @Bean
+    public BeanB beanB() {
+        beanFactory.getBean("beanA");
+        return new BeanB();
+    }
+
+}
@@ -0,0 +1,12 @@
+package com.baeldung.ex.beandefinitionstoreexception.cause2;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanA {
+
+    @Value("${some.property2}")
+    private String someProperty2;
+
+}
@@ -0,0 +1,18 @@
+package com.baeldung.ex.beandefinitionstoreexception.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.ImportResource;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.beandefinitionstoreexception.cause1")
+@ImportResource("beans.xml")
+public class Cause1ContextWithJavaConfig {
+
+    public Cause1ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}
@@ -0,0 +1,27 @@
+package com.baeldung.ex.beandefinitionstoreexception.spring;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.beandefinitionstoreexception.cause2")
+public class Cause2ContextWithJavaConfig {
+
+    @Value("${some.property}")
+    private String someProperty;
+
+    public Cause2ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+    @Bean
+    public PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
+        return new PropertySourcesPlaceholderConfigurer();
+    }
+
+}
@@ -0,0 +1,16 @@
+package com.baeldung.ex.beandefinitionstoreexception.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.beandefinitionstoreexception.cause3")
+public class Cause3ContextWithJavaConfig {
+
+    public Cause3ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}
@@ -0,0 +1,26 @@
+package com.baeldung.ex.dataintegrityviolationexception.spring;
+
+import com.baeldung.spring.config.PersistenceConfig;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.dataIntegrityviolationexception.cause1")
+@Import(PersistenceConfig.class)
+public class Cause1DataContextWithJavaConfig {
+
+    public Cause1DataContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+    @Bean
+    public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
+        return new PersistenceExceptionTranslationPostProcessor();
+    }
+
+}
@@ -0,0 +1,19 @@
+package com.baeldung.ex.dataintegrityviolationexception.spring;
+
+import com.baeldung.spring.config.PersistenceConfig;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.dataIntegrityviolationexception.cause2")
+@Import(PersistenceConfig.class)
+public class Cause2DataContextWithJavaConfig {
+
+    public Cause2DataContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}
@@ -0,0 +1,19 @@
+package com.baeldung.ex.dataintegrityviolationexception.spring;
+
+import com.baeldung.spring.config.PersistenceConfig;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.dataIntegrityviolationexception.cause3")
+@Import(PersistenceConfig.class)
+public class Cause3DataContextWithJavaConfig {
+
+    public Cause3DataContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}
@@ -0,0 +1,29 @@
+package com.baeldung.ex.mappingexception.cause1.persistence.model;
+
+import java.io.Serializable;
+
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+public class Foo implements Serializable {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private long id;
+
+    public Foo() {
+        super();
+    }
+
+    // API
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(final long id) {
+        this.id = id;
+    }
+
+}
@@ -0,0 +1,31 @@
+package com.baeldung.ex.mappingexception.cause2.persistence.model;
+
+import java.io.Serializable;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@Entity
+public class Foo implements Serializable {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private long id;
+
+    public Foo() {
+        super();
+    }
+
+    // API
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(final long id) {
+        this.id = id;
+    }
+
+}
@@ -0,0 +1,31 @@
+package com.baeldung.ex.mappingexception.cause3.persistence.model;
+
+import java.io.Serializable;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@Entity
+public class Foo implements Serializable {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private long id;
+
+    public Foo() {
+        super();
+    }
+
+    // API
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(final long id) {
+        this.id = id;
+    }
+
+}
@@ -0,0 +1,31 @@
+package com.baeldung.ex.mappingexception.cause4.persistence.model;
+
+import java.io.Serializable;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@Entity
+public class Foo implements Serializable {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private long id;
+
+    public Foo() {
+        super();
+    }
+
+    // API
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(final long id) {
+        this.id = id;
+    }
+
+}
@@ -0,0 +1,76 @@
+package com.baeldung.ex.mappingexception.spring;
+
+import java.util.Properties;
+
+import javax.sql.DataSource;
+
+import org.apache.tomcat.dbcp.dbcp.BasicDataSource;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+import org.springframework.core.env.Environment;
+import org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor;
+import org.springframework.orm.hibernate4.HibernateTransactionManager;
+import org.springframework.orm.hibernate4.LocalSessionFactoryBean;
+import org.springframework.transaction.annotation.EnableTransactionManagement;
+
+import com.google.common.base.Preconditions;
+
+@Configuration
+@EnableTransactionManagement
+@PropertySource({ "classpath:persistence-mysql.properties" })
+@ComponentScan({ "com.baeldung.ex.mappingexception.cause1.persistence" })
+public class Cause1PersistenceConfig {
+
+    @Autowired
+    private Environment env;
+
+    public Cause1PersistenceConfig() {
+        super();
+    }
+
+    @Bean
+    public LocalSessionFactoryBean sessionFactory() {
+        final LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
+        sessionFactory.setDataSource(restDataSource());
+        sessionFactory.setPackagesToScan(new String[] { "com.baeldung.ex.mappingexception.cause1.persistence.model" });
+        sessionFactory.setHibernateProperties(hibernateProperties());
+
+        return sessionFactory;
+    }
+
+    @Bean
+    public DataSource restDataSource() {
+        final BasicDataSource dataSource = new BasicDataSource();
+        dataSource.setDriverClassName(Preconditions.checkNotNull(env.getProperty("jdbc.driverClassName")));
+        dataSource.setUrl(Preconditions.checkNotNull(env.getProperty("jdbc.url")));
+        dataSource.setUsername(Preconditions.checkNotNull(env.getProperty("jdbc.user")));
+        dataSource.setPassword(Preconditions.checkNotNull(env.getProperty("jdbc.pass")));
+
+        return dataSource;
+    }
+
+    @Bean
+    public HibernateTransactionManager transactionManager() {
+        final HibernateTransactionManager txManager = new HibernateTransactionManager();
+        txManager.setSessionFactory(sessionFactory().getObject());
+
+        return txManager;
+    }
+
+    @Bean
+    public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
+        return new PersistenceExceptionTranslationPostProcessor();
+    }
+
+    final Properties hibernateProperties() {
+        final Properties hibernateProperties = new Properties();
+        hibernateProperties.setProperty("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
+        hibernateProperties.setProperty("hibernate.dialect", env.getProperty("hibernate.dialect"));
+        // hibernateProperties.setProperty("hibernate.globally_quoted_identifiers", "true");
+        return hibernateProperties;
+    }
+
+}
@@ -0,0 +1,78 @@
+package com.baeldung.ex.mappingexception.spring;
+
+import java.util.Properties;
+
+import javax.sql.DataSource;
+
+import org.apache.tomcat.dbcp.dbcp.BasicDataSource;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+import org.springframework.core.env.Environment;
+import org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor;
+import org.springframework.orm.hibernate4.HibernateTransactionManager;
+import org.springframework.orm.hibernate4.LocalSessionFactoryBean;
+import org.springframework.transaction.annotation.EnableTransactionManagement;
+
+import com.google.common.base.Preconditions;
+
+@Configuration
+@EnableTransactionManagement
+@PropertySource({ "classpath:persistence-mysql.properties" })
+@ComponentScan({ "com.baeldung.ex.mappingexception.cause2.persistence" })
+public class Cause2PersistenceConfig {
+
+    @Autowired
+    private Environment env;
+
+    public Cause2PersistenceConfig() {
+        super();
+    }
+
+    @Bean
+    public LocalSessionFactoryBean sessionFactory() {
+        final LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
+        sessionFactory.setDataSource(restDataSource());
+        sessionFactory.setHibernateProperties(hibernateProperties());
+
+        // sessionFactory.setPackagesToScan(new String[] { "com.baeldung.ex.mappingexception.cause2.persistence.model" });
+        // sessionFactory.setAnnotatedClasses(new Class[] { Foo.class });
+
+        return sessionFactory;
+    }
+
+    @Bean
+    public DataSource restDataSource() {
+        final BasicDataSource dataSource = new BasicDataSource();
+        dataSource.setDriverClassName(Preconditions.checkNotNull(env.getProperty("jdbc.driverClassName")));
+        dataSource.setUrl(Preconditions.checkNotNull(env.getProperty("jdbc.url")));
+        dataSource.setUsername(Preconditions.checkNotNull(env.getProperty("jdbc.user")));
+        dataSource.setPassword(Preconditions.checkNotNull(env.getProperty("jdbc.pass")));
+
+        return dataSource;
+    }
+
+    @Bean
+    public HibernateTransactionManager transactionManager() {
+        final HibernateTransactionManager txManager = new HibernateTransactionManager();
+        txManager.setSessionFactory(sessionFactory().getObject());
+
+        return txManager;
+    }
+
+    @Bean
+    public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
+        return new PersistenceExceptionTranslationPostProcessor();
+    }
+
+    final Properties hibernateProperties() {
+        final Properties hibernateProperties = new Properties();
+        hibernateProperties.setProperty("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
+        hibernateProperties.setProperty("hibernate.dialect", env.getProperty("hibernate.dialect"));
+        // hibernateProperties.setProperty("hibernate.globally_quoted_identifiers", "true");
+        return hibernateProperties;
+    }
+
+}
@@ -0,0 +1,79 @@
+package com.baeldung.ex.mappingexception.spring;
+
+import java.util.Properties;
+
+import javax.sql.DataSource;
+
+import org.apache.tomcat.dbcp.dbcp.BasicDataSource;
+import com.baeldung.ex.mappingexception.cause3.persistence.model.Foo;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+import org.springframework.core.env.Environment;
+import org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor;
+import org.springframework.orm.hibernate4.HibernateTransactionManager;
+import org.springframework.orm.hibernate4.LocalSessionFactoryBean;
+import org.springframework.transaction.annotation.EnableTransactionManagement;
+
+import com.google.common.base.Preconditions;
+
+@Configuration
+@EnableTransactionManagement
+@PropertySource({ "classpath:persistence-mysql.properties" })
+@ComponentScan({ "com.baeldung.ex.mappingexception.cause2.persistence" })
+public class Cause3PersistenceConfig {
+
+    @Autowired
+    private Environment env;
+
+    public Cause3PersistenceConfig() {
+        super();
+    }
+
+    @Bean
+    public LocalSessionFactoryBean sessionFactory() {
+        final LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
+        sessionFactory.setDataSource(restDataSource());
+        sessionFactory.setHibernateProperties(hibernateProperties());
+
+        // sessionFactory.setPackagesToScan(new String[] { "com.baeldung.ex.mappingexception.cause2.persistence.model" });
+        sessionFactory.setAnnotatedClasses(new Class[] { Foo.class });
+
+        return sessionFactory;
+    }
+
+    @Bean
+    public DataSource restDataSource() {
+        final BasicDataSource dataSource = new BasicDataSource();
+        dataSource.setDriverClassName(Preconditions.checkNotNull(env.getProperty("jdbc.driverClassName")));
+        dataSource.setUrl(Preconditions.checkNotNull(env.getProperty("jdbc.url")));
+        dataSource.setUsername(Preconditions.checkNotNull(env.getProperty("jdbc.user")));
+        dataSource.setPassword(Preconditions.checkNotNull(env.getProperty("jdbc.pass")));
+
+        return dataSource;
+    }
+
+    @Bean
+    public HibernateTransactionManager transactionManager() {
+        final HibernateTransactionManager txManager = new HibernateTransactionManager();
+        txManager.setSessionFactory(sessionFactory().getObject());
+
+        return txManager;
+    }
+
+    @Bean
+    public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
+        return new PersistenceExceptionTranslationPostProcessor();
+    }
+
+    final Properties hibernateProperties() {
+        final Properties hibernateProperties = new Properties();
+        hibernateProperties.setProperty("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
+        hibernateProperties.setProperty("hibernate.dialect", env.getProperty("hibernate.dialect"));
+        // hibernateProperties.setProperty("hibernate.globally_quoted_identifiers", "true");
+        return hibernateProperties;
+    }
+
+}
@@ -0,0 +1,76 @@
+package com.baeldung.ex.nontransientexception.cause;
+
+import java.util.Properties;
+
+import javax.sql.DataSource;
+
+import org.apache.tomcat.dbcp.dbcp.BasicDataSource;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+import org.springframework.core.env.Environment;
+import org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor;
+import org.springframework.orm.hibernate4.HibernateTransactionManager;
+import org.springframework.orm.hibernate4.LocalSessionFactoryBean;
+import org.springframework.transaction.annotation.EnableTransactionManagement;
+
+import com.google.common.base.Preconditions;
+
+@Configuration
+@EnableTransactionManagement
+@PropertySource({ "classpath:persistence-derby.properties" })
+@ComponentScan({ "com.baeldung.persistence" })
+public class Cause1NonTransientConfig {
+
+    @Autowired
+    private Environment env;
+
+    public Cause1NonTransientConfig() {
+        super();
+    }
+
+    @Bean
+    public LocalSessionFactoryBean sessionFactory() {
+        final LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
+        sessionFactory.setDataSource(restDataSource());
+        sessionFactory.setPackagesToScan(new String[] { "com.baeldung.persistence.model" });
+        sessionFactory.setHibernateProperties(hibernateProperties());
+
+        return sessionFactory;
+    }
+
+    @Bean
+    public DataSource restDataSource() {
+        final BasicDataSource dataSource = new BasicDataSource();
+        dataSource.setDriverClassName(Preconditions.checkNotNull(env.getProperty("jdbc.driverClassName")));
+        dataSource.setUrl(Preconditions.checkNotNull(env.getProperty("jdbc.url")));
+        dataSource.setUsername(Preconditions.checkNotNull(env.getProperty("jdbc.user")));
+        dataSource.setPassword(Preconditions.checkNotNull(env.getProperty("jdbc.pass")));
+
+        return dataSource;
+    }
+
+    @Bean
+    public HibernateTransactionManager transactionManager() {
+        final HibernateTransactionManager txManager = new HibernateTransactionManager();
+        txManager.setSessionFactory(sessionFactory().getObject());
+
+        return txManager;
+    }
+
+    @Bean
+    public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
+        return new PersistenceExceptionTranslationPostProcessor();
+    }
+
+    final Properties hibernateProperties() {
+        final Properties hibernateProperties = new Properties();
+        hibernateProperties.setProperty("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
+        hibernateProperties.setProperty("hibernate.dialect", env.getProperty("hibernate.dialect"));
+        // hibernateProperties.setProperty("hibernate.globally_quoted_identifiers", "true");
+        return hibernateProperties;
+    }
+
+}
@@ -0,0 +1,75 @@
+package com.baeldung.ex.nontransientexception.cause;
+
+import java.util.Properties;
+
+import javax.sql.DataSource;
+
+import org.apache.tomcat.dbcp.dbcp.BasicDataSource;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+import org.springframework.core.env.Environment;
+import org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor;
+import org.springframework.orm.hibernate4.HibernateTransactionManager;
+import org.springframework.orm.hibernate4.LocalSessionFactoryBean;
+import org.springframework.transaction.annotation.EnableTransactionManagement;
+
+import com.google.common.base.Preconditions;
+
+@Configuration
+@EnableTransactionManagement
+@PropertySource({ "classpath:persistence-derby.properties" })
+@ComponentScan({ "com.baeldung.persistence" })
+public class Cause4NonTransientConfig {
+
+    @Autowired
+    private Environment env;
+
+    public Cause4NonTransientConfig() {
+        super();
+    }
+
+    @Bean
+    public LocalSessionFactoryBean sessionFactory() {
+        final LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
+        sessionFactory.setDataSource(restDataSource());
+        sessionFactory.setPackagesToScan(new String[] { "com.baeldung.persistence.model" });
+        sessionFactory.setHibernateProperties(hibernateProperties());
+
+        return sessionFactory;
+    }
+
+    @Bean
+    public DataSource restDataSource() {
+        final BasicDataSource dataSource = new BasicDataSource();
+        dataSource.setDriverClassName(Preconditions.checkNotNull(env.getProperty("jdbc.driverClassName")));
+        dataSource.setUrl(Preconditions.checkNotNull(env.getProperty("jdbc.url")));
+        dataSource.setUsername(Preconditions.checkNotNull(env.getProperty("jdbc.user")));
+        dataSource.setPassword(Preconditions.checkNotNull(env.getProperty("jdbc.pass")));
+
+        return dataSource;
+    }
+
+    @Bean
+    public HibernateTransactionManager transactionManager() {
+        final HibernateTransactionManager txManager = new HibernateTransactionManager();
+        txManager.setSessionFactory(sessionFactory().getObject());
+
+        return txManager;
+    }
+
+    @Bean
+    public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
+        return new PersistenceExceptionTranslationPostProcessor();
+    }
+
+    final Properties hibernateProperties() {
+        final Properties hibernateProperties = new Properties();
+        hibernateProperties.setProperty("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
+        hibernateProperties.setProperty("hibernate.dialect", env.getProperty("hibernate.dialect"));
+        // hibernateProperties.setProperty("hibernate.globally_quoted_identifiers", "true");
+        return hibernateProperties;
+    }
+}
@@ -0,0 +1,75 @@
+package com.baeldung.ex.nontransientexception.cause;
+
+import java.util.Properties;
+
+import javax.sql.DataSource;
+
+import org.apache.tomcat.dbcp.dbcp.BasicDataSource;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+import org.springframework.core.env.Environment;
+import org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor;
+import org.springframework.orm.hibernate4.HibernateTransactionManager;
+import org.springframework.orm.hibernate4.LocalSessionFactoryBean;
+import org.springframework.transaction.annotation.EnableTransactionManagement;
+
+import com.google.common.base.Preconditions;
+
+@Configuration
+@EnableTransactionManagement
+@PropertySource({ "classpath:persistence-mysql-incorrect.properties" })
+@ComponentScan({ "com.baeldung.persistence" })
+public class Cause5NonTransientConfig {
+
+    @Autowired
+    private Environment env;
+
+    public Cause5NonTransientConfig() {
+        super();
+    }
+
+    @Bean
+    public LocalSessionFactoryBean sessionFactory() {
+        final LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
+        sessionFactory.setDataSource(restDataSource());
+        sessionFactory.setPackagesToScan(new String[] { "com.baeldung.persistence.model" });
+        sessionFactory.setHibernateProperties(hibernateProperties());
+
+        return sessionFactory;
+    }
+
+    @Bean
+    public DataSource restDataSource() {
+        final BasicDataSource dataSource = new BasicDataSource();
+        dataSource.setDriverClassName(Preconditions.checkNotNull(env.getProperty("jdbc.driverClassName")));
+        dataSource.setUrl(Preconditions.checkNotNull(env.getProperty("jdbc.url")));
+        dataSource.setUsername(Preconditions.checkNotNull(env.getProperty("jdbc.user")));
+        dataSource.setPassword(Preconditions.checkNotNull(env.getProperty("jdbc.pass")));
+
+        return dataSource;
+    }
+
+    @Bean
+    public HibernateTransactionManager transactionManager() {
+        final HibernateTransactionManager txManager = new HibernateTransactionManager();
+        txManager.setSessionFactory(sessionFactory().getObject());
+
+        return txManager;
+    }
+
+    @Bean
+    public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
+        return new PersistenceExceptionTranslationPostProcessor();
+    }
+
+    final Properties hibernateProperties() {
+        final Properties hibernateProperties = new Properties();
+        hibernateProperties.setProperty("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
+        hibernateProperties.setProperty("hibernate.dialect", env.getProperty("hibernate.dialect"));
+        // hibernateProperties.setProperty("hibernate.globally_quoted_identifiers", "true");
+        return hibernateProperties;
+    }
+}
@@ -0,0 +1,12 @@
+package com.baeldung.ex.nosuchbeandefinitionexception.cause1;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanA {
+
+    @Autowired
+    private BeanB dependency;
+
+}
@@ -0,0 +1,5 @@
+package com.baeldung.ex.nosuchbeandefinitionexception.cause1;
+
+public class BeanB {
+    //
+}
@@ -0,0 +1,12 @@
+package com.baeldung.ex.nosuchbeandefinitionexception.cause2;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanA {
+
+    @Autowired
+    private IBeanB dependency;
+
+}
@@ -0,0 +1,8 @@
+package com.baeldung.ex.nosuchbeandefinitionexception.cause2;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanB1 implements IBeanB {
+    //
+}
@@ -0,0 +1,8 @@
+package com.baeldung.ex.nosuchbeandefinitionexception.cause2;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanB2 implements IBeanB {
+    //
+}
@@ -0,0 +1,5 @@
+package com.baeldung.ex.nosuchbeandefinitionexception.cause2;
+
+public interface IBeanB {
+    //
+}
@@ -0,0 +1,19 @@
+package com.baeldung.ex.nosuchbeandefinitionexception.cause3;
+
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationContext;
+import org.springframework.stereotype.Component;
+
+@Component
+public class BeanA implements InitializingBean {
+
+    @Autowired
+    private ApplicationContext context;
+
+    @Override
+    public void afterPropertiesSet() {
+        context.getBean("someBeanName");
+    }
+
+}
@@ -0,0 +1,16 @@
+package com.baeldung.ex.nosuchbeandefinitionexception.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.nosuchbeandefinitionexception.cause1")
+public class Cause1ContextWithJavaConfig {
+
+    public Cause1ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}
@@ -0,0 +1,16 @@
+package com.baeldung.ex.nosuchbeandefinitionexception.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.nosuchbeandefinitionexception.cause2")
+public class Cause2ContextWithJavaConfig {
+
+    public Cause2ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}
@@ -0,0 +1,16 @@
+package com.baeldung.ex.nosuchbeandefinitionexception.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan("com.baeldung.ex.nosuchbeandefinitionexception.cause3")
+public class Cause3ContextWithJavaConfig {
+
+    public Cause3ContextWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+}
@@ -0,0 +1,26 @@
+package com.baeldung.persistence;
+
+import org.springframework.context.ApplicationListener;
+import org.springframework.context.event.ContextRefreshedEvent;
+import org.springframework.stereotype.Component;
+
+@Component
+public class Setup implements ApplicationListener<ContextRefreshedEvent> {
+
+    private boolean setupDone;
+
+    public Setup() {
+        super();
+    }
+
+    //
+
+    @Override
+    public final void onApplicationEvent(final ContextRefreshedEvent event) {
+        if (!setupDone) {
+            System.out.println();
+            setupDone = true;
+        }
+    }
+
+}
@@ -0,0 +1,65 @@
+package com.baeldung.persistence.common;
+
+import java.io.Serializable;
+import java.util.List;
+
+import org.hibernate.Session;
+import org.hibernate.SessionFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import com.google.common.base.Preconditions;
+
+@SuppressWarnings("unchecked")
+public abstract class AbstractHibernateDao<T extends Serializable> implements IOperations<T> {
+    private Class<T> clazz;
+
+    @Autowired
+    private SessionFactory sessionFactory;
+
+    // API
+
+    protected final void setClazz(final Class<T> clazzToSet) {
+        clazz = Preconditions.checkNotNull(clazzToSet);
+    }
+
+    @Override
+    public final T findOne(final long id) {
+        return (T) getCurrentSession().get(clazz, id);
+    }
+
+    @Override
+    public final List<T> findAll() {
+        return getCurrentSession().createQuery("from " + clazz.getName()).list();
+    }
+
+    @Override
+    public final void create(final T entity) {
+        Preconditions.checkNotNull(entity);
+        // getCurrentSession().persist(entity);
+        getCurrentSession().saveOrUpdate(entity);
+    }
+
+    @Override
+    public final T update(final T entity) {
+        Preconditions.checkNotNull(entity);
+        return (T) getCurrentSession().merge(entity);
+    }
+
+    @Override
+    public final void delete(final T entity) {
+        Preconditions.checkNotNull(entity);
+        getCurrentSession().delete(entity);
+    }
+
+    @Override
+    public final void deleteById(final long entityId) {
+        final T entity = findOne(entityId);
+        Preconditions.checkState(entity != null);
+        delete(entity);
+    }
+
+    protected final Session getCurrentSession() {
+        return sessionFactory.getCurrentSession();
+    }
+
+}
@@ -0,0 +1,43 @@
+package com.baeldung.persistence.common;
+
+import java.io.Serializable;
+import java.util.List;
+
+import org.springframework.transaction.annotation.Transactional;
+
+@Transactional
+public abstract class AbstractService<T extends Serializable> implements IOperations<T> {
+
+    @Override
+    public T findOne(final long id) {
+        return getDao().findOne(id);
+    }
+
+    @Override
+    public List<T> findAll() {
+        return getDao().findAll();
+    }
+
+    @Override
+    public void create(final T entity) {
+        getDao().create(entity);
+    }
+
+    @Override
+    public T update(final T entity) {
+        return getDao().update(entity);
+    }
+
+    @Override
+    public void delete(final T entity) {
+        getDao().delete(entity);
+    }
+
+    @Override
+    public void deleteById(final long entityId) {
+        getDao().deleteById(entityId);
+    }
+
+    protected abstract IOperations<T> getDao();
+
+}
@@ -0,0 +1,20 @@
+package com.baeldung.persistence.common;
+
+import java.io.Serializable;
+import java.util.List;
+
+public interface IOperations<T extends Serializable> {
+
+    T findOne(final long id);
+
+    List<T> findAll();
+
+    void create(final T entity);
+
+    T update(final T entity);
+
+    void delete(final T entity);
+
+    void deleteById(final long entityId);
+
+}
@@ -0,0 +1,8 @@
+package com.baeldung.persistence.dao;
+
+import com.baeldung.persistence.common.IOperations;
+import com.baeldung.persistence.model.Child;
+
+public interface IChildDao extends IOperations<Child> {
+    //
+}
@@ -0,0 +1,8 @@
+package com.baeldung.persistence.dao;
+
+import com.baeldung.persistence.common.IOperations;
+import com.baeldung.persistence.model.Foo;
+
+public interface IFooDao extends IOperations<Foo> {
+    //
+}
@@ -0,0 +1,8 @@
+package com.baeldung.persistence.dao;
+
+import com.baeldung.persistence.common.IOperations;
+import com.baeldung.persistence.model.Parent;
+
+public interface IParentDao extends IOperations<Parent> {
+    //
+}
@@ -0,0 +1,24 @@
+package com.baeldung.persistence.dao.impl;
+
+import com.baeldung.persistence.common.AbstractHibernateDao;
+import com.baeldung.persistence.model.Child;
+import com.baeldung.persistence.dao.IChildDao;
+import org.hibernate.SessionFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public class ChildDao extends AbstractHibernateDao<Child> implements IChildDao {
+
+    @Autowired
+    private SessionFactory sessionFactory;
+
+    public ChildDao() {
+        super();
+
+        setClazz(Child.class);
+    }
+
+    // API
+
+}
@@ -0,0 +1,24 @@
+package com.baeldung.persistence.dao.impl;
+
+import com.baeldung.persistence.common.AbstractHibernateDao;
+import com.baeldung.persistence.dao.IFooDao;
+import com.baeldung.persistence.model.Foo;
+import org.hibernate.SessionFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public class FooDao extends AbstractHibernateDao<Foo> implements IFooDao {
+
+    @Autowired
+    private SessionFactory sessionFactory;
+
+    public FooDao() {
+        super();
+
+        setClazz(Foo.class);
+    }
+
+    // API
+
+}
@@ -0,0 +1,24 @@
+package com.baeldung.persistence.dao.impl;
+
+import com.baeldung.persistence.common.AbstractHibernateDao;
+import com.baeldung.persistence.model.Parent;
+import com.baeldung.persistence.dao.IParentDao;
+import org.hibernate.SessionFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public class ParentDao extends AbstractHibernateDao<Parent> implements IParentDao {
+
+    @Autowired
+    private SessionFactory sessionFactory;
+
+    public ParentDao() {
+        super();
+
+        setClazz(Parent.class);
+    }
+
+    // API
+
+}
@@ -0,0 +1,51 @@
+package com.baeldung.persistence.model;
+
+import java.io.Serializable;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.OneToOne;
+
+@Entity
+public class Child implements Serializable {
+
+    @Id
+    @GeneratedValue
+    private long id;
+
+    @OneToOne(mappedBy = "child")
+    private Parent parent;
+
+    public Child() {
+        super();
+    }
+
+    // API
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(final long id) {
+        this.id = id;
+    }
+
+    public Parent getParent() {
+        return parent;
+    }
+
+    public void setParent(final Parent parent) {
+        this.parent = parent;
+    }
+
+    //
+
+    @Override
+    public String toString() {
+        final StringBuilder builder = new StringBuilder();
+        builder.append("Child [id=").append(id).append("]");
+        return builder.toString();
+    }
+
+}
@@ -0,0 +1,83 @@
+package com.baeldung.persistence.model;
+
+import java.io.Serializable;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@Entity
+public class Foo implements Serializable {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private long id;
+
+    @Column(nullable = false)
+    private String name;
+
+    public Foo() {
+        super();
+    }
+
+    public Foo(final String name) {
+        super();
+
+        this.name = name;
+    }
+
+    // API
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(final long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(final String name) {
+        this.name = name;
+    }
+
+    //
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + ((name == null) ? 0 : name.hashCode());
+        return result;
+    }
+
+    @Override
+    public boolean equals(final Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null)
+            return false;
+        if (getClass() != obj.getClass())
+            return false;
+        final Foo other = (Foo) obj;
+        if (name == null) {
+            if (other.name != null)
+                return false;
+        } else if (!name.equals(other.name))
+            return false;
+        return true;
+    }
+
+    @Override
+    public String toString() {
+        final StringBuilder builder = new StringBuilder();
+        builder.append("Foo [name=").append(name).append("]");
+        return builder.toString();
+    }
+
+}
@@ -0,0 +1,60 @@
+package com.baeldung.persistence.model;
+
+import java.io.Serializable;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.OneToOne;
+
+@Entity
+public class Parent implements Serializable {
+
+    @Id
+    @GeneratedValue
+    private long id;
+
+    @OneToOne(cascade = { CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH, CascadeType.DETACH })
+    @JoinColumn(name = "child_fk")
+    private Child child;
+
+    public Parent() {
+        super();
+    }
+
+    public Parent(final Child child) {
+        super();
+
+        this.child = child;
+    }
+
+    // API
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(final long id) {
+        this.id = id;
+    }
+
+    public Child getChild() {
+        return child;
+    }
+
+    public void setChild(final Child child) {
+        this.child = child;
+    }
+
+    //
+
+    @Override
+    public String toString() {
+        final StringBuilder builder = new StringBuilder();
+        builder.append("Parent [id=").append(id).append("]");
+        return builder.toString();
+    }
+
+}
@@ -0,0 +1,8 @@
+package com.baeldung.persistence.service;
+
+import com.baeldung.persistence.common.IOperations;
+import com.baeldung.persistence.model.Child;
+
+public interface IChildService extends IOperations<Child> {
+    //
+}
@@ -0,0 +1,8 @@
+package com.baeldung.persistence.service;
+
+import com.baeldung.persistence.common.IOperations;
+import com.baeldung.persistence.model.Foo;
+
+public interface IFooService extends IOperations<Foo> {
+    //
+}
@@ -0,0 +1,8 @@
+package com.baeldung.persistence.service;
+
+import com.baeldung.persistence.common.IOperations;
+import com.baeldung.persistence.model.Parent;
+
+public interface IParentService extends IOperations<Parent> {
+    //
+}
@@ -0,0 +1,28 @@
+package com.baeldung.persistence.service.impl;
+
+import com.baeldung.persistence.common.AbstractService;
+import com.baeldung.persistence.common.IOperations;
+import com.baeldung.persistence.service.IChildService;
+import com.baeldung.persistence.dao.IChildDao;
+import com.baeldung.persistence.model.Child;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class ChildService extends AbstractService<Child> implements IChildService {
+
+    @Autowired
+    private IChildDao dao;
+
+    public ChildService() {
+        super();
+    }
+
+    // API
+
+    @Override
+    protected IOperations<Child> getDao() {
+        return dao;
+    }
+
+}
@@ -0,0 +1,28 @@
+package com.baeldung.persistence.service.impl;
+
+import com.baeldung.persistence.common.AbstractService;
+import com.baeldung.persistence.common.IOperations;
+import com.baeldung.persistence.service.IFooService;
+import com.baeldung.persistence.dao.IFooDao;
+import com.baeldung.persistence.model.Foo;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class FooService extends AbstractService<Foo> implements IFooService {
+
+    @Autowired
+    private IFooDao dao;
+
+    public FooService() {
+        super();
+    }
+
+    // API
+
+    @Override
+    protected IOperations<Foo> getDao() {
+        return dao;
+    }
+
+}
@@ -0,0 +1,28 @@
+package com.baeldung.persistence.service.impl;
+
+import com.baeldung.persistence.common.AbstractService;
+import com.baeldung.persistence.common.IOperations;
+import com.baeldung.persistence.model.Parent;
+import com.baeldung.persistence.service.IParentService;
+import com.baeldung.persistence.dao.IParentDao;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class ParentService extends AbstractService<Parent> implements IParentService {
+
+    @Autowired
+    private IParentDao dao;
+
+    public ParentService() {
+        super();
+    }
+
+    // API
+
+    @Override
+    protected IOperations<Parent> getDao() {
+        return dao;
+    }
+
+}
@@ -0,0 +1,30 @@
+package com.baeldung.properties.core;
+
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.core.env.Environment;
+
+public class ComponentInXmlUsingProperties implements InitializingBean {
+
+    @Autowired
+    private Environment env;
+
+    @Value("${key.something}")
+    private String injectedProperty;
+
+    public ComponentInXmlUsingProperties(final String propertyValue) {
+        super();
+
+        System.out.println("Constructor Injection - Property Value resolted to: " + propertyValue);
+    }
+
+    //
+
+    @Override
+    public void afterPropertiesSet() throws Exception {
+        System.out.println("in afterPropertiesSet via @Value: " + injectedProperty);
+        System.out.println("in afterPropertiesSet Environment: " + env.getProperty("key.something"));
+    }
+
+}
@@ -0,0 +1,30 @@
+package com.baeldung.properties.core;
+
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.core.env.Environment;
+import org.springframework.stereotype.Component;
+
+@Component
+public class ComponentUsingProperties implements InitializingBean {
+
+    @Autowired
+    private Environment env;
+
+    @Value("${key.something}")
+    private String injectedProperty;
+
+    public ComponentUsingProperties() {
+        super();
+    }
+
+    //
+
+    @Override
+    public void afterPropertiesSet() throws Exception {
+        System.out.println("in afterPropertiesSet via @Value: " + injectedProperty);
+        System.out.println("in afterPropertiesSet Environment: " + env.getProperty("key.something"));
+    }
+
+}
@@ -0,0 +1,25 @@
+package com.baeldung.properties.spring;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
+
+@Configuration
+@ComponentScan("com.baeldung.properties.core")
+@PropertySource("classpath:foo.properties")
+public class PropertiesWithJavaConfig {
+
+    public PropertiesWithJavaConfig() {
+        super();
+    }
+
+    // beans
+
+    @Bean
+    public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
+        return new PropertySourcesPlaceholderConfigurer();
+    }
+
+}
@@ -0,0 +1,16 @@
+package com.baeldung.properties.spring;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+
+@Configuration
+@PropertySource("classpath:bar.properties")
+public class PropertiesWithJavaConfigOther {
+
+    public PropertiesWithJavaConfigOther() {
+        super();
+    }
+
+    // beans
+
+}
@@ -0,0 +1,16 @@
+package com.baeldung.properties.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.ImportResource;
+
+@Configuration
+@ImportResource("classpath:configForProperties.xml")
+@ComponentScan("com.baeldung.core")
+public class PropertiesWithXmlConfig {
+
+    public PropertiesWithXmlConfig() {
+        super();
+    }
+
+}
@@ -0,0 +1,16 @@
+package com.baeldung.properties.spring;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.ImportResource;
+
+@Configuration
+@ImportResource("classpath:configForPropertiesOne.xml")
+@ComponentScan("com.baeldung.core")
+public class PropertiesWithXmlConfigOne {
+
+    public PropertiesWithXmlConfigOne() {
+        super();
+    }
+
+}
@@ -0,0 +1,14 @@
+package com.baeldung.properties.spring;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.ImportResource;
+
+@Configuration
+@ImportResource("classpath:configForPropertiesTwo.xml")
+public class PropertiesWithXmlConfigTwo {
+
+    public PropertiesWithXmlConfigTwo() {
+        super();
+    }
+
+}
@@ -0,0 +1,15 @@
+package com.baeldung.spring.config;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+
+@Configuration
+@ComponentScan("com.baeldung.core")
+public class CoreConfig extends WebMvcConfigurerAdapter {
+
+    public CoreConfig() {
+        super();
+    }
+
+}
@@ -0,0 +1,41 @@
+package com.baeldung.spring.config;
+
+import java.util.Set;
+
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRegistration;
+
+import org.springframework.web.WebApplicationInitializer;
+import org.springframework.web.context.ContextLoaderListener;
+import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
+import org.springframework.web.context.support.GenericWebApplicationContext;
+import org.springframework.web.servlet.DispatcherServlet;
+
+public class MainWebAppInitializer implements WebApplicationInitializer {
+
+    /**
+     * Register and configure all Servlet container components necessary to power the web application.
+     */
+    @Override
+    public void onStartup(final ServletContext sc) throws ServletException {
+        System.out.println("MainWebAppInitializer.onStartup()");
+
+        // Create the 'root' Spring application context
+        final AnnotationConfigWebApplicationContext root = new AnnotationConfigWebApplicationContext();
+        root.scan("com.baeldung.spring.config");
+        // root.getEnvironment().setDefaultProfiles("embedded");
+
+        // Manages the lifecycle of the root application context
+        sc.addListener(new ContextLoaderListener(root));
+
+        // Handles requests into the application
+        final ServletRegistration.Dynamic appServlet = sc.addServlet("mvc", new DispatcherServlet(new GenericWebApplicationContext()));
+        appServlet.setLoadOnStartup(1);
+        final Set<String> mappingConflicts = appServlet.addMapping("/");
+        if (!mappingConflicts.isEmpty()) {
+            throw new IllegalStateException("'appServlet' could not be mapped to '/' due " + "to an existing mapping. This is a known issue under Tomcat versions " + "<= 7.0.14; see https://issues.apache.org/bugzilla/show_bug.cgi?id=51278");
+        }
+    }
+
+}
@@ -0,0 +1,39 @@
+package com.baeldung.spring.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.ViewResolver;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+import org.springframework.web.servlet.view.InternalResourceViewResolver;
+import org.springframework.web.servlet.view.JstlView;
+
+@EnableWebMvc
+@Configuration
+public class MvcConfig extends WebMvcConfigurerAdapter {
+
+    public MvcConfig() {
+        super();
+    }
+
+    // API
+
+    @Override
+    public void addViewControllers(final ViewControllerRegistry registry) {
+        super.addViewControllers(registry);
+
+        registry.addViewController("/sample.html");
+    }
+
+    @Bean
+    public ViewResolver viewResolver() {
+        final InternalResourceViewResolver bean = new InternalResourceViewResolver();
+
+        bean.setViewClass(JstlView.class);
+        bean.setPrefix("/WEB-INF/view/");
+        bean.setSuffix(".jsp");
+
+        return bean;
+    }
+}
@@ -0,0 +1,76 @@
+package com.baeldung.spring.config;
+
+import java.util.Properties;
+
+import javax.sql.DataSource;
+
+import org.apache.tomcat.dbcp.dbcp.BasicDataSource;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+import org.springframework.core.env.Environment;
+import org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor;
+import org.springframework.orm.hibernate4.HibernateTransactionManager;
+import org.springframework.orm.hibernate4.LocalSessionFactoryBean;
+import org.springframework.transaction.annotation.EnableTransactionManagement;
+
+import com.google.common.base.Preconditions;
+
+@Configuration
+@EnableTransactionManagement
+@PropertySource({ "classpath:persistence-mysql.properties" })
+@ComponentScan({ "com.baeldung.persistence" })
+public class PersistenceConfig {
+
+    @Autowired
+    private Environment env;
+
+    public PersistenceConfig() {
+        super();
+    }
+
+    @Bean
+    public LocalSessionFactoryBean sessionFactory() {
+        final LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
+        sessionFactory.setDataSource(restDataSource());
+        sessionFactory.setPackagesToScan(new String[] { "com.baeldung.persistence.model" });
+        sessionFactory.setHibernateProperties(hibernateProperties());
+
+        return sessionFactory;
+    }
+
+    @Bean
+    public DataSource restDataSource() {
+        final BasicDataSource dataSource = new BasicDataSource();
+        dataSource.setDriverClassName(Preconditions.checkNotNull(env.getProperty("jdbc.driverClassName")));
+        dataSource.setUrl(Preconditions.checkNotNull(env.getProperty("jdbc.url")));
+        dataSource.setUsername(Preconditions.checkNotNull(env.getProperty("jdbc.user")));
+        dataSource.setPassword(Preconditions.checkNotNull(env.getProperty("jdbc.pass")));
+
+        return dataSource;
+    }
+
+    @Bean
+    public HibernateTransactionManager transactionManager() {
+        final HibernateTransactionManager txManager = new HibernateTransactionManager();
+        txManager.setSessionFactory(sessionFactory().getObject());
+
+        return txManager;
+    }
+
+    @Bean
+    public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
+        return new PersistenceExceptionTranslationPostProcessor();
+    }
+
+    final Properties hibernateProperties() {
+        final Properties hibernateProperties = new Properties();
+        hibernateProperties.setProperty("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
+        hibernateProperties.setProperty("hibernate.dialect", env.getProperty("hibernate.dialect"));
+        // hibernateProperties.setProperty("hibernate.globally_quoted_identifiers", "true");
+        return hibernateProperties;
+    }
+
+}