[BAEL-7621] - Fixed integration test of spring-hibernate-5 module by introducing H2 database

persistence-modules/spring-hibernate-5/src/main/java/com/baeldung/hibernate/manytomany/model/Employee.java

@@ -3,13 +3,15 @@ package com.baeldung.hibernate.manytomany.model;
 import java.io.Serializable;
 import java.util.HashSet;
 import java.util.Set;
+
 import javax.persistence.CascadeType;
 import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
 import javax.persistence.Id;
-import javax.persistence.JoinTable;
 import javax.persistence.JoinColumn;
+import javax.persistence.JoinTable;
 import javax.persistence.ManyToMany;
 import javax.persistence.Table;
 
@@ -18,7 +20,7 @@ import javax.persistence.Table;
 public class Employee implements Serializable {
     @Id
     @Column(name = "employee_id")
-    @GeneratedValue
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long employeeId;
 
     @Column(name = "first_name")

persistence-modules/spring-hibernate-5/src/main/java/com/baeldung/hibernatesearch/HibernateSearchConfig.java

@@ -50,6 +50,8 @@ public class HibernateSearchConfig {
         final BasicDataSource dataSource = new BasicDataSource();
         dataSource.setDriverClassName(Preconditions.checkNotNull(env.getProperty("jdbc.driverClassName")));
         dataSource.setUrl(Preconditions.checkNotNull(env.getProperty("jdbc.url")));
+        dataSource.setUsername(env.getProperty("jdbc.user"));
+        dataSource.setPassword(env.getProperty("jdbc.pass"));
 
         return dataSource;
     }

persistence-modules/spring-hibernate-5/src/main/java/com/baeldung/manytomany/spring/PersistenceConfig.java

@@ -19,7 +19,7 @@ import org.springframework.transaction.annotation.EnableTransactionManagement;
 
 @Configuration
 @EnableTransactionManagement
-@PropertySource({ "classpath:persistence-mysql.properties" })
+@PropertySource({ "classpath:persistence-h2.properties" })
 @ComponentScan({ "com.baeldung.hibernate.manytomany" })
 public class PersistenceConfig {
 
@@ -61,7 +61,7 @@ public class PersistenceConfig {
     
     private final Properties hibernateProperties() {
         final Properties hibernateProperties = new Properties();
-        //hibernateProperties.setProperty("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
+        hibernateProperties.setProperty("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
         hibernateProperties.setProperty("hibernate.dialect", env.getProperty("hibernate.dialect"));
         hibernateProperties.setProperty("hibernate.show_sql", "true");
      

persistence-modules/spring-hibernate-5/src/main/java/com/baeldung/spring/PersistenceConfig.java

@@ -21,7 +21,7 @@ import java.util.Properties;
 
 @Configuration
 @EnableTransactionManagement
-@PropertySource({ "classpath:persistence-mysql.properties" })
+@PropertySource({ "classpath:persistence-h2.properties" })
 @ComponentScan({ "com.baeldung.persistence" })
 public class PersistenceConfig {
 

persistence-modules/spring-hibernate-5/src/main/resources/persistence-h2.properties

@@ -3,7 +3,7 @@ jdbc.driverClassName=org.h2.Driver
 jdbc.url=jdbc:h2:mem:db;DB_CLOSE_DELAY=-1
 jdbc.eventGeneratedId=sa
 jdbc.user=sa
-jdbc.pass=sa
+jdbc.pass=
 
 # hibernate.X
 hibernate.dialect=org.hibernate.dialect.H2Dialect

persistence-modules/spring-hibernate-5/src/test/resources/manytomany.cfg.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE hibernate-configuration PUBLIC
+		"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
+		"http://hibernate.org/dtd/hibernate-configuration-3.0.dtd">
+<hibernate-configuration>
+    <session-factory>
+        <property name="hibernate.connection.driver_class">org.h2.Driver</property>
+        <property name="hibernate.connection.password"></property>
+        <property name="hibernate.connection.url">jdbc:h2:mem:spring_hibernate_many_to_many</property>
+        <property name="hibernate.connection.username">sa</property>
+        <property name="hibernate.dialect">org.hibernate.dialect.H2Dialect</property>
+        <property name="hibernate.current_session_context_class">thread</property>
+        <property name="hibernate.show_sql">true</property>
+        <property name="hibernate.hbm2ddl.auto">create-drop</property>
+    </session-factory>
+</hibernate-configuration>