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slgobinathslgobinath
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Hibernate with annotation mapping
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‎hibernate/HibernateAnnotation/.classpath‎

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<?xml version="1.0" encoding="UTF-8"?>
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<classpath>
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<classpathentry kind="src" output="target/classes" path="src">
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<attributes>
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<attribute name="optional" value="true"/>
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<attribute name="maven.pomderived" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry kind="src" path="resources"/>
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<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
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<attributes>
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<attribute name="maven.pomderived" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
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<attributes>
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<attribute name="maven.pomderived" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry kind="output" path="target/classes"/>
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</classpath>

‎hibernate/HibernateAnnotation/.project‎

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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>HibernateAnnotation</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>org.eclipse.jdt.core.javabuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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<buildCommand>
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<name>org.eclipse.m2e.core.maven2Builder</name>
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<arguments>
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</arguments>
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</buildCommand>
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<buildCommand>
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<name>org.hibernate.eclipse.console.hibernateBuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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</buildSpec>
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<natures>
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<nature>org.eclipse.m2e.core.maven2Nature</nature>
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<nature>org.eclipse.jdt.core.javanature</nature>
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<nature>org.hibernate.eclipse.console.hibernateNature</nature>
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</natures>
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</projectDescription>

‎hibernate/HibernateAnnotation/.settings/org.eclipse.jdt.core.prefs‎

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eclipse.preferences.version=1
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org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
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org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
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org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
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org.eclipse.jdt.core.compiler.compliance=1.8
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org.eclipse.jdt.core.compiler.debug.lineNumber=generate
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org.eclipse.jdt.core.compiler.debug.localVariable=generate
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org.eclipse.jdt.core.compiler.debug.sourceFile=generate
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org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
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org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
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org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
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org.eclipse.jdt.core.compiler.source=1.8

‎hibernate/HibernateAnnotation/.settings/org.eclipse.m2e.core.prefs‎

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activeProfiles=
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eclipse.preferences.version=1
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resolveWorkspaceProjects=true
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version=1

‎hibernate/HibernateAnnotation/.settings/org.hibernate.eclipse.console.prefs‎

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default.configuration=HibernateAnnotation
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eclipse.preferences.version=1
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hibernate3.enabled=true

‎hibernate/HibernateAnnotation/pom.xml‎

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.javahelps</groupId>
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<artifactId>HibernateAnnotation</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<build>
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<sourceDirectory>src</sourceDirectory>
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<plugins>
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<plugin>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.1</version>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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</configuration>
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</plugin>
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</plugins>
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</build>
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<dependencies>
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<dependency>
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<groupId>org.hibernate</groupId>
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<artifactId>hibernate-core</artifactId>
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<version>4.3.10.Final</version>
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</dependency>
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-log4j12</artifactId>
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<version>1.7.12</version>
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</dependency>
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<dependency>
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<groupId>org.javassist</groupId>
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<artifactId>javassist</artifactId>
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<version>3.20.0-GA</version>
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</dependency>
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<dependency>
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<groupId>mysql</groupId>
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<artifactId>mysql-connector-java</artifactId>
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<version>5.1.36</version>
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</dependency>
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</dependencies>
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</project>

‎hibernate/HibernateAnnotation/resources/hibernate.cfg.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE hibernate-configuration PUBLIC
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"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
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"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
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<hibernate-configuration>
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<session-factory>
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<!-- Create table if not exists -->
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<property name="hibernate.hbm2ddl.auto">update</property>
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<!-- The JDBC driver of your database -->
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<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
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<!-- Indicate the database to generate suitable SQL -->
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<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
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<!-- The JDBC URL to the database instance -->
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<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/javahelps</property>
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<!-- The database username -->
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<property name="hibernate.connection.username">root</property>
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<!-- The database password -->
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<property name="hibernate.connection.password">root</property>
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<!-- Mapping class -->
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<mapping class="com.javahelps.hibernate.Student"></mapping>
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</session-factory>
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</hibernate-configuration>

‎hibernate/HibernateAnnotation/src/com/javahelps/hibernate/Main.java‎

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package com.javahelps.hibernate;
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import java.util.List;
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import java.util.Properties;
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import org.hibernate.HibernateException;
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import org.hibernate.Session;
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import org.hibernate.SessionFactory;
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import org.hibernate.Transaction;
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import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
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import org.hibernate.cfg.Configuration;
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import org.hibernate.service.ServiceRegistry;
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public class Main {
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// Create the SessionFactory when you start the application.
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private static final SessionFactory SESSION_FACTORY;
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/**
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* Initialize the SessionFactory instance.
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*/
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static {
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// Create a Configuration object.
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Configuration config = new Configuration();
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// Configure using the application resource named hibernate.cfg.xml.
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config.configure();
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// Extract the properties from the configuration file.
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Properties prop = config.getProperties();
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// Create StandardServiceRegistryBuilder using the properties.
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StandardServiceRegistryBuilder builder = new StandardServiceRegistryBuilder();
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builder.applySettings(prop);
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// Build a ServiceRegistry
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ServiceRegistry registry = builder.build();
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// Create the SessionFactory using the ServiceRegistry
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SESSION_FACTORY = config.buildSessionFactory(registry);
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}
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public static void main(String[] args) {
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// Create two Students
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create(1, "Alice", 22); // Alice will get an id 1
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create(2, "Bob", 20); // Bob will get an id 2
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create(3, "Charlie", 25); // Charlie will get an id 3
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// Update the age of Bob using the id
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upate(2, "Bob", 25);
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// Delete the Alice from database
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delete(1);
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// Print all the Students
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List<Student> students = readAll();
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if (students != null) {
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for (Student stu : students) {
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System.out.println(stu);
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}
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}
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// NEVER FORGET TO CLOSE THE SESSION_FACTORY
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SESSION_FACTORY.close();
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}
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/**
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* Create a new Student.
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*
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* @param name
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* @param age
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*/
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public static void create(int id, String name, int age) {
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// Create a session
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Session session = SESSION_FACTORY.openSession();
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Transaction transaction = null;
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try {
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// Begin a transaction
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transaction = session.beginTransaction();
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Student stu = new Student();
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stu.setId(id);
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stu.setName(name);
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stu.setAge(age);
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// Save the student
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session.save(stu);
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// Commit the transaction
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transaction.commit();
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} catch (HibernateException ex) {
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// If there are any exceptions, roll back the changes
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if (transaction != null) {
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transaction.rollback();
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}
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// Print the Exception
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ex.printStackTrace();
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} finally {
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// Close the session
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session.close();
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}
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}
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/**
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* Read all the Students.
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*
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* @return a List of Students
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*/
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public static List<Student> readAll() {
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List<Student> students = null;
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// Create a session
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Session session = SESSION_FACTORY.openSession();
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Transaction transaction = null;
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try {
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// Begin a transaction
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transaction = session.beginTransaction();
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students = session.createQuery("FROM Student").list();
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// Commit the transaction
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transaction.commit();
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} catch (HibernateException ex) {
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// If there are any exceptions, roll back the changes
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if (transaction != null) {
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transaction.rollback();
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}
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// Print the Exception
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ex.printStackTrace();
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} finally {
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// Close the session
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session.close();
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}
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return students;
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}
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/**
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* Delete the existing Student.
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*
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* @param id
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*/
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public static void delete(int id) {
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// Create a session
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Session session = SESSION_FACTORY.openSession();
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Transaction transaction = null;
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try {
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// Begin a transaction
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transaction = session.beginTransaction();
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// Get the Student from the database.
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Student stu = (Student) session.get(Student.class,
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Integer.valueOf(id));
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// Delete the student
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session.delete(stu);
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// Commit the transaction
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transaction.commit();
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} catch (HibernateException ex) {
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// If there are any exceptions, roll back the changes
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if (transaction != null) {
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transaction.rollback();
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}
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// Print the Exception
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ex.printStackTrace();
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} finally {
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// Close the session
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session.close();
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}
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}
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/**
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* Update the existing Student.
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*
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* @param id
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* @param name
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* @param age
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*/
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public static void upate(int id, String name, int age) {
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// Create a session
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Session session = SESSION_FACTORY.openSession();
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Transaction transaction = null;
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try {
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// Begin a transaction
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transaction = session.beginTransaction();
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// Get the Student from the database.
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Student stu = (Student) session.get(Student.class,
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Integer.valueOf(id));
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// Change the values
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stu.setName(name);
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stu.setAge(age);
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// Update the student
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session.update(stu);
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// Commit the transaction
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transaction.commit();
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} catch (HibernateException ex) {
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// If there are any exceptions, roll back the changes
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if (transaction != null) {
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transaction.rollback();
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}
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// Print the Exception
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ex.printStackTrace();
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} finally {
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// Close the session
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session.close();
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}
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}
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}

‎hibernate/HibernateAnnotation/src/com/javahelps/hibernate/Student.java‎

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package com.javahelps.hibernate;
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import java.io.Serializable;
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import javax.persistence.Column;
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import javax.persistence.Entity;
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import javax.persistence.Id;
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import javax.persistence.Table;
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@Entity
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@Table(name = "student")
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public class Student implements Serializable {
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@Id
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@Column(name = "student_id", unique = true)
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private int id;
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@Column(name = "student_name", nullable = false)
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private String name;
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@Column(name = "student_age", nullable = false)
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private int age;
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public int getId() {
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return id;
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}
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public void setId(int id) {
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this.id = id;
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}
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public int getAge() {
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return age;
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}
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public void setAge(int age) {
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this.age = age;
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}
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@Override
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public String toString() {
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return id + "\t" + name + "\t" + age;
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}
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}

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