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Hibernate example source code file (CreateTest.java)

This example Hibernate source code file (CreateTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Hibernate tags/keywords

arraylist, employee, employer, node, node, numberednode, numberednode, session, session, suppresswarnings, test, test, transaction, util, versionedentity

The Hibernate CreateTest.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2011, Red Hat Inc. or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.hibernate.test.ops;

import java.util.ArrayList;
import java.util.Collection;

import org.hibernate.PersistentObjectException;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.exception.ConstraintViolationException;

import org.junit.Test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.fail;

/**
 * @author Gavin King
 */
public class CreateTest extends AbstractOperationTestCase {
	@Test
	@SuppressWarnings( {"unchecked"})
	public void testNoUpdatesOnCreateVersionedWithCollection() {
		clearCounts();

		Session s = openSession();
		Transaction tx = s.beginTransaction();
		VersionedEntity root = new VersionedEntity( "root", "root" );
		VersionedEntity child = new VersionedEntity( "c1", "child-1" );
		root.getChildren().add( child );
		child.setParent( root );
		s.save(root);
		tx.commit();
		s.close();

		assertInsertCount( 2 );
		assertUpdateCount( 0 );
		assertDeleteCount( 0 );

		s = openSession();
		tx = s.beginTransaction();
		s.delete( root );
		tx.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 2 );
	}

	@Test
	public void testCreateTree() {
		clearCounts();

		Session s = openSession();
		Transaction tx = s.beginTransaction();
		Node root = new Node("root");
		Node child = new Node("child");
		root.addChild(child);
		s.persist(root);
		tx.commit();
		s.close();

		assertInsertCount(2);
		assertUpdateCount(0);

		s = openSession();
		tx = s.beginTransaction();
		System.out.println("getting");
		root = (Node) s.get(Node.class, "root");
		Node child2 = new Node("child2");
		root.addChild(child2);
		System.out.println("committing");
		tx.commit();
		s.close();

		assertInsertCount(3);
		assertUpdateCount(0);
	}

	@Test
	@SuppressWarnings( {"UnnecessaryBoxing"})
	public void testCreateTreeWithGeneratedId() {
		clearCounts();

		Session s = openSession();
		Transaction tx = s.beginTransaction();
		NumberedNode root = new NumberedNode("root");
		NumberedNode child = new NumberedNode("child");
		root.addChild(child);
		s.persist(root);
		tx.commit();
		s.close();

		assertInsertCount(2);
		assertUpdateCount(0);

		s = openSession();
		tx = s.beginTransaction();
		root = (NumberedNode) s.get( NumberedNode.class, Long.valueOf( root.getId() ) );
		NumberedNode child2 = new NumberedNode("child2");
		root.addChild(child2);
		tx.commit();
		s.close();

		assertInsertCount(3);
		assertUpdateCount(0);
	}

	@Test
	public void testCreateException() {
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		Node dupe = new Node("dupe");
		s.persist(dupe);
		s.persist(dupe);
		tx.commit();
		s.close();

		s = openSession();
		tx = s.beginTransaction();
		s.persist(dupe);
		try {
			tx.commit();
			fail( "Expecting constraint failure" );
		}
		catch (ConstraintViolationException cve) {
			//verify that an exception is thrown!
		}
		tx.rollback();
		s.close();

		Node nondupe = new Node("nondupe");
		nondupe.addChild(dupe);

		s = openSession();
		tx = s.beginTransaction();
		s.persist(nondupe);
		try {
			tx.commit();
			assertFalse(true);
		}
		catch (ConstraintViolationException cve) {
			//verify that an exception is thrown!
		}
		tx.rollback();
		s.close();
	}

	@Test
	public void testCreateExceptionWithGeneratedId() {
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		NumberedNode dupe = new NumberedNode("dupe");
		s.persist(dupe);
		s.persist(dupe);
		tx.commit();
		s.close();

		s = openSession();
		tx = s.beginTransaction();
		try {
			s.persist(dupe);
			assertFalse(true);
		}
		catch (PersistentObjectException poe) {
			//verify that an exception is thrown!
		}
		tx.rollback();
		s.close();

		NumberedNode nondupe = new NumberedNode("nondupe");
		nondupe.addChild(dupe);

		s = openSession();
		tx = s.beginTransaction();
		try {
			s.persist(nondupe);
			assertFalse(true);
		}
		catch (PersistentObjectException poe) {
			//verify that an exception is thrown!
		}
		tx.rollback();
		s.close();
	}

	@Test
	@SuppressWarnings( {"unchecked"})
	public void testBasic() throws Exception {
		Session s;
		Transaction tx;
		s = openSession();
		tx = s.beginTransaction();
		Employer er = new Employer();
		Employee ee = new Employee();
		s.persist(ee);
		Collection erColl = new ArrayList();
		Collection eeColl = new ArrayList();
		erColl.add(ee);
		eeColl.add(er);
		er.setEmployees(erColl);
		ee.setEmployers(eeColl);
		tx.commit();
		s.close();

		s = openSession();
		tx = s.beginTransaction();
		er = (Employer) s.load(Employer.class, er.getId() );
		assertNotNull(er);
		assertNotNull( er.getEmployees() );
		assertEquals( 1, er.getEmployees().size() );
		Employee eeFromDb = (Employee) er.getEmployees().iterator().next();
		assertEquals( ee.getId(), eeFromDb.getId() );
		tx.commit();
		s.close();
	}
}

Other Hibernate examples (source code examples)

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