Java Tutorial/Hibernate/Transaction

Hibernate Session and Transaction

File: Main.java

   <source lang="java">

import java.util.Date; import java.util.Iterator; import java.util.List; import org.hibernate.Session; import org.hibernate.Transaction; public class Main {

 public static void main(String[] args) throws Exception {
   HibernateUtil hibernateUtil = new HibernateUtil();
   hibernateUtil
       .executeSQLCommand("create table survey (id int,name varchar, purchasedate date);");
   Session session = hibernateUtil.getSession();
   Survey survey = new Survey();
   survey.setName("Survey");
   survey.setPurchaseDate(new Date());
   System.out.println(survey.getId());
   Transaction t = session.beginTransaction();
   session.save(survey);
   t.rumit();

   List cds = session.createQuery("from Survey").list();
   Iterator iter = cds.iterator();
   while (iter.hasNext()) {
     Survey cd = (Survey) iter.next();
     System.out.println(cd.getName());
   }
   session.close();
   hibernateUtil.checkData("select * from survey");
 }

}</source>

Rollback a Transaction

File: Main.java

   <source lang="java">

import java.util.Date; import org.hibernate.Query; import org.hibernate.Session; import org.hibernate.Transaction; public class Main {

 public static void main(String[] args) throws Exception {
   HibernateUtil hibernateUtil = new HibernateUtil();
   hibernateUtil
       .executeSQLCommand("create table survey (id int,name varchar, purchasedate date);");
   Session session = hibernateUtil.getSession();
   Survey survey = new Survey();
   survey.setName("Survey");
   survey.setPurchaseDate(new Date());
   session.save(survey);
   
   survey = new Survey();
   survey.setName("Survey1");
   survey.setPurchaseDate(new Date());    
   session.save(survey);
   
   session.flush();
   
   Transaction tx = session.beginTransaction();
   tx.rumit();
   tx = session.beginTransaction();
   
   String hql = "delete from Survey where name = :name";
   Query query = session.createQuery(hql);
   query.setString("name","Survey");
   int rowCount = query.executeUpdate();
   System.out.println("Rows affected: " + rowCount);
   tx.rollback();
   
   
   session.close();
   hibernateUtil.checkData("select * from survey");
 }

}</source>