parentchildtest.java

介绍了hibernate的入门有一些基本常用的事例

		s.delete(c);
		t.commit();
		s.close();
	}

	public void testCascadeCompositeElements() throws Exception {
		Container c = new Container();
		List list = new ArrayList();
		c.setCascades(list);
		Container.ContainerInnerClass cic = new Container.ContainerInnerClass();
		cic.setMany( new Many() );
		cic.setOne( new One() );
		list.add(cic);
		Session s = openSession();
		s.save(c);
		s.flush();
		s.connection().commit();
		s.close();
		s=openSession();
		c = (Container) s.iterate("from ContainerX c").next();
		cic = (Container.ContainerInnerClass) c.getCascades().iterator().next();
		assertTrue( cic.getMany()!=null && cic.getOne()!=null );
		assertTrue( c.getCascades().size()==1 );
		s.delete(c);
		s.flush();
		s.connection().commit();
		s.close();

		c = new Container();
		s = openSession();
		s.save(c);
		list = new ArrayList();
		c.setCascades(list);
		cic = new Container.ContainerInnerClass();
		cic.setMany( new Many() );
		cic.setOne( new One() );
		list.add(cic);
		s.flush();
		s.connection().commit();
		s.close();
		s=openSession();
		c = (Container) s.iterate("from ContainerX c").next();
		cic = (Container.ContainerInnerClass) c.getCascades().iterator().next();
		assertTrue( cic.getMany()!=null && cic.getOne()!=null );
		assertTrue( c.getCascades().size()==1 );
		s.delete(c);
		s.flush();
		s.connection().commit();
		s.close();
	}

	public void testBag() throws Exception {

		if (getDialect() instanceof HSQLDialect) return;

		Session s = openSession();
		Transaction t = s.beginTransaction();
		Container c = new Container();
		Contained c1 = new Contained();
		Contained c2 = new Contained();
		c.setBag( new ArrayList() );
		c.getBag().add(c1);
		c.getBag().add(c2);
		c1.getBag().add(c);
		c2.getBag().add(c);
		s.save(c);
		c.getBag().add(c2);
		c2.getBag().add(c);
		c.getLazyBag().add(c1);
		c1.getLazyBag().add(c);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		c = (Container) s.find("from ContainerX c").get(0);
		c.getLazyBag().size();
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		c = (Container) s.find("from ContainerX c").get(0);
		Contained c3 = new Contained();
		//c.getBag().add(c3);
		//c3.getBag().add(c);
		c.getLazyBag().add(c3);
		c3.getLazyBag().add(c);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		c = (Container) s.find("from ContainerX c").get(0);
		Contained c4 = new Contained();
		c.getLazyBag().add(c4);
		c4.getLazyBag().add(c);
		assertTrue( c.getLazyBag().size()==3 ); //forces initialization
		//s.save(c4);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		c = (Container) s.find("from ContainerX c").get(0);
		Iterator i = c.getBag().iterator();
		int j=0;
		while ( i.hasNext() ) {
			assertTrue( i.next()!=null );
			j++;
		}
		assertTrue(j==3);
		assertTrue( c.getLazyBag().size()==3 );
		s.delete(c);
		c.getBag().remove(c2);
		Iterator iter = c.getBag().iterator();
		j=0;
		while ( iter.hasNext() ) {
			j++;
			s.delete( iter.next() );
		}
		assertTrue(j==2);
		s.delete( s.load(Contained.class, new Long( c4.getId() ) ) );
		s.delete( s.load(Contained.class, new Long( c3.getId() ) ) );
		t.commit();
		s.close();

	}

	public void testCircularCascade() throws Exception {
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		Circular c = new Circular();
		c.setClazz(Circular.class);
		c.setOther( new Circular() );
		c.getOther().setOther( new Circular() );
		c.getOther().getOther().setOther(c);
		c.setAnyEntity( c.getOther() );
		String id = (String) s.save(c);
		tx.commit();
		s.close();
		s = openSession();
		tx = s.beginTransaction();
		c = (Circular) s.load(Circular.class, id);
		c.getOther().getOther().setClazz(Foo.class);
		tx.commit();
		s.close();
		c.getOther().setClazz(Qux.class);
		s = openSession();
		tx = s.beginTransaction();
		s.saveOrUpdate(c);
		tx.commit();
		s.close();
		c.getOther().getOther().setClazz(Bar.class);
		s = openSession();
		tx = s.beginTransaction();
		s.saveOrUpdate(c);
		tx.commit();
		s.close();
		s = openSession();
		tx = s.beginTransaction();
		c = (Circular) s.load(Circular.class, id);
		assertTrue( c.getOther().getOther().getClazz()==Bar.class);
		assertTrue( c.getOther().getClazz()==Qux.class);
		assertTrue( c.getOther().getOther().getOther()==c);
		assertTrue( c.getAnyEntity()==c.getOther() );
		assertTrue( s.delete("from Universe")==3 );
		tx.commit();
		s.close();
	}

	public void testDeleteEmpty() throws Exception {
		Session s = openSession();
		assertTrue( s.delete("from Simple")==0 );
		assertTrue( s.delete("from Universe")==0 );
		s.close();
	}

	public void testLocking() throws Exception {
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		Simple s1 = new Simple(); s1.setCount(1);
		Simple s2 = new Simple(); s2.setCount(2);
		Simple s3 = new Simple(); s3.setCount(3);
		Simple s4 = new Simple(); s4.setCount(4);
		s.save(s1, new Long(1) );
		s.save(s2, new Long(2) );
		s.save(s3, new Long(3) );
		s.save(s4, new Long(4) );
		assertTrue( s.getCurrentLockMode(s1)==LockMode.WRITE );
		tx.commit();
		s.close();

		s = openSession();
		tx = s.beginTransaction();
		s1 = (Simple) s.load(Simple.class, new Long(1), LockMode.NONE);
		assertTrue( s.getCurrentLockMode(s1)==LockMode.READ || s.getCurrentLockMode(s1)==LockMode.NONE ); //depends if cache is enabled
		s2 = (Simple) s.load(Simple.class, new Long(2), LockMode.READ);
		assertTrue( s.getCurrentLockMode(s2)==LockMode.READ );
		s3 = (Simple) s.load(Simple.class, new Long(3), LockMode.UPGRADE);
		assertTrue( s.getCurrentLockMode(s3)==LockMode.UPGRADE );
		s4 = (Simple) s.get(Simple.class, new Long(4), LockMode.UPGRADE_NOWAIT);
		assertTrue( s.getCurrentLockMode(s4)==LockMode.UPGRADE_NOWAIT );

		s1 = (Simple) s.load(Simple.class, new Long(1), LockMode.UPGRADE); //upgrade
		assertTrue( s.getCurrentLockMode(s1)==LockMode.UPGRADE );
		s2 = (Simple) s.load(Simple.class, new Long(2), LockMode.NONE);
		assertTrue( s.getCurrentLockMode(s2)==LockMode.READ );
		s3 = (Simple) s.load(Simple.class, new Long(3), LockMode.READ);
		assertTrue( s.getCurrentLockMode(s3)==LockMode.UPGRADE );
		s4 = (Simple) s.load(Simple.class, new Long(4), LockMode.UPGRADE);
		assertTrue( s.getCurrentLockMode(s4)==LockMode.UPGRADE_NOWAIT );

		s.lock(s2, LockMode.UPGRADE); //upgrade
		assertTrue( s.getCurrentLockMode(s2)==LockMode.UPGRADE );
		s.lock(s3, LockMode.UPGRADE);
		assertTrue( s.getCurrentLockMode(s3)==LockMode.UPGRADE );
		s.lock(s1, LockMode.UPGRADE_NOWAIT);
		s.lock(s4, LockMode.NONE);
		assertTrue( s.getCurrentLockMode(s4)==LockMode.UPGRADE_NOWAIT );

		tx.commit();
		tx = s.beginTransaction();

		assertTrue( s.getCurrentLockMode(s3)==LockMode.NONE );
		assertTrue( s.getCurrentLockMode(s1)==LockMode.NONE );
		assertTrue( s.getCurrentLockMode(s2)==LockMode.NONE );
		assertTrue( s.getCurrentLockMode(s4)==LockMode.NONE );

		s.lock(s1, LockMode.READ); //upgrade
		assertTrue( s.getCurrentLockMode(s1)==LockMode.READ );
		s.lock(s2, LockMode.UPGRADE); //upgrade
		assertTrue( s.getCurrentLockMode(s2)==LockMode.UPGRADE );
		s.lock(s3, LockMode.UPGRADE_NOWAIT); //upgrade
		assertTrue( s.getCurrentLockMode(s3)==LockMode.UPGRADE_NOWAIT );
		s.lock(s4, LockMode.NONE);
		assertTrue( s.getCurrentLockMode(s4)==LockMode.NONE );

		s4.setName("s4");
		s.flush();
		assertTrue( s.getCurrentLockMode(s4)==LockMode.WRITE );
		tx.commit();

		tx = s.beginTransaction();

		assertTrue( s.getCurrentLockMode(s3)==LockMode.NONE );
		assertTrue( s.getCurrentLockMode(s1)==LockMode.NONE );
		assertTrue( s.getCurrentLockMode(s2)==LockMode.NONE );
		assertTrue( s.getCurrentLockMode(s4)==LockMode.NONE );

		s.delete(s1); s.delete(s2); s.delete(s3); s.delete(s4);
		tx.commit();
		s.close();
	}

	public void testObjectType() throws Exception {
		Session s = openSession();
		Parent g = new Parent();
		Foo foo = new Foo();
		g.setAny(foo);
		s.save(g);
		s.save(foo);
		s.flush();
		s.connection().commit();
		s.close();
		s = openSession();
		g = (Parent) s.load( Parent.class, new Long( g.getId() ) );
		assertTrue( g.getAny()!=null && g.getAny() instanceof FooProxy );
		s.delete( g.getAny() );
		s.delete(g);
		s.flush();
		s.connection().commit();
		s.close();
	}

	public void testLoadAfterNonExists() throws HibernateException, SQLException {

		Session session = openSession();
		if ( (getDialect() instanceof MySQLDialect) ) {
			session.connection().setTransactionIsolation(Connection.TRANSACTION_READ_COMMITTED);
		}

		// First, prime the fixture session to think the entity does not exist
		try {
			session.load( Simple.class, new Long(-1) );
			fail();
		}
		catch(ObjectNotFoundException onfe) {
			// this is correct
		}

		// Next, lets create that entity under the covers
		Session anotherSession = getSessions().openSession();
		Simple myNewSimple = new Simple();
		myNewSimple.setName("My under the radar Simple entity");
		myNewSimple.setAddress("SessionCacheTest.testLoadAfterNonExists");
		myNewSimple.setCount(1);
		myNewSimple.setDate( new Date() );
		myNewSimple.setPay( new Float(100000000) );
		anotherSession.save( myNewSimple, new Long(-1) );
		anotherSession.flush();
		anotherSession.connection().commit();
		anotherSession.close();

		// Verify that the original session is still unable to see the new entry...
		try {
			session.load( Simple.class, new Long(-1) );
			fail();
		}
		catch(ObjectNotFoundException onfe) {
		}

		// Now, lets clear the original session at which point it should be able to see
		// the new entity
		session.clear();
		try {
			Simple dummy = (Simple) session.load( Simple.class, new Long(-1) );
			assertNotNull("Unable to locate entity Simple with id = -1", dummy);
		}
		catch(ObjectNotFoundException onfe) {
			fail("Unable to locate entity Simple with id = -1");
		}
		session.connection().commit();
		session.close();
	}

	public static Test suite() {
		return new TestSuite(ParentChildTest.class);
	}

	public String[] getMappings() {
		return new String[] {
			"legacy/ParentChild.hbm.xml",
			"legacy/FooBar.hbm.xml",
		 	"legacy/Baz.hbm.xml",
		 	"legacy/Qux.hbm.xml",
		 	"legacy/Glarch.hbm.xml",
		 	"legacy/Fum.hbm.xml",
		 	"legacy/Fumm.hbm.xml",
		 	"legacy/Fo.hbm.xml",
		 	"legacy/One.hbm.xml",
		 	"legacy/Many.hbm.xml",
		 	"legacy/Immutable.hbm.xml",
		 	"legacy/Fee.hbm.xml",
		 	"legacy/Vetoer.hbm.xml",
		 	"legacy/Holder.hbm.xml",
		 	"legacy/Simple.hbm.xml",
		 	"legacy/Container.hbm.xml",
		 	"legacy/Circular.hbm.xml",
		 	"legacy/Stuff.hbm.xml"
		};
	}

	public static void main(String[] args) throws Exception {
		TestRunner.run( suite() );
	}

}