multidemo.java

hibernate_tutorial经典教程

package tutorial.dev.multi;

import java.io.Serializable;
import java.util.Iterator;
import java.util.List;

import net.sf.hibernate.HibernateException;
import net.sf.hibernate.Session;
import net.sf.hibernate.SessionFactory;
import net.sf.hibernate.Transaction;
import net.sf.hibernate.cfg.Configuration;

public class MultiDemo {
	public static void main(String[] args) {
		try {
			new MultiDemo();
		} catch(HibernateException he) {
			he.printStackTrace();
		}
	}
	
	public MultiDemo() throws HibernateException {
		Configuration config = new Configuration();
		// add the classes you want to persist
		// make sure the mapping files are on the classpath
		config.addClass(BasicView.class);
		config.addClass(ComplexView.class);
		
		SessionFactory sf = config.buildSessionFactory();
	
		Session sess = sf.openSession();
		Transaction tx = null;
		// store the orderlist and all products
		Serializable id = null;
		BasicView bv = null;
		ComplexView cv = null;
		try {
			tx = sess.beginTransaction();
			bv = new BasicView();
			bv.setPropA("33333");
			
			cv = new ComplexView();
			cv.setValue(new Long(1111));
			
			
			sess.save(bv);
			sess.save(cv);
			
			
			
			
			tx.commit();
		} catch (HibernateException e) {
		    if (tx!=null) tx.rollback();
		    throw e;
		} 
		finally {
		    sess.close();
		}

		sess = sf.openSession();
		// store the orderlist and all products
		try {
			tx = sess.beginTransaction();
		
			BasicView bv1 = (BasicView) sess.get(BasicView.class, bv.getId());
			ComplexView cv1 = (ComplexView) sess.get(ComplexView.class, cv.getId());
			
			System.out.println(""+bv1);
			System.out.println(""+cv1);
			
			List list = sess.find("from " + ComplexView.class.getName() +" as cv where cv.value != null");
			
			for (Iterator iter = list.iterator(); iter.hasNext();) {
				ComplexView element = (ComplexView) iter.next();
				System.out.println("List: " + element);
			}
			
			
			tx.commit();
		} catch (HibernateException e) {
		    if (tx!=null) tx.rollback();
		    throw e;
		} 
		finally {
		    sess.close();
		}
	}	
}