readonlytest.java

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//$Id: ReadOnlyTest.java 10977 2006-12-12 23:28:04Z [e-mail] $
package org.hibernate.test.readonly;

import java.math.BigDecimal;
import java.util.List;

import junit.framework.Test;

import org.hibernate.CacheMode;
import org.hibernate.Hibernate;
import org.hibernate.ScrollMode;
import org.hibernate.ScrollableResults;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.hibernate.cfg.Environment;
import org.hibernate.junit.functional.FunctionalTestCase;
import org.hibernate.junit.functional.FunctionalTestClassTestSuite;

/**
 * 
 * @author Gavin King
 */
public class ReadOnlyTest extends FunctionalTestCase {
	
	public ReadOnlyTest(String str) {
		super(str);
	}

	public String[] getMappings() {
		return new String[] { "readonly/DataPoint.hbm.xml", "readonly/TextHolder.hbm.xml" };
	}

	public void configure(Configuration cfg) {
		cfg.setProperty(Environment.STATEMENT_BATCH_SIZE, "20");
	}

	public String getCacheConcurrencyStrategy() {
		return null;
	}

	public static Test suite() {
		return new FunctionalTestClassTestSuite( ReadOnlyTest.class );
	}

	public void testReadOnlyOnProxiesFailureExpected() {
		Session s = openSession();
		s.setCacheMode( CacheMode.IGNORE );
		s.beginTransaction();
		DataPoint dp = new DataPoint();
		dp.setX( new BigDecimal( 0.1d ).setScale(19, BigDecimal.ROUND_DOWN) );
		dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
		dp.setDescription( "original" );
		s.save( dp );
		long dpId = dp.getId();
		s.getTransaction().commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		dp = ( DataPoint ) s.load( DataPoint.class, new Long( dpId ) );
		assertFalse( "was initialized", Hibernate.isInitialized( dp ) );
		s.setReadOnly( dp, true );
		assertFalse( "was initialized during setReadOnly", Hibernate.isInitialized( dp ) );
		dp.setDescription( "changed" );
		assertTrue( "was not initialized during mod", Hibernate.isInitialized( dp ) );
		assertEquals( "desc not changed in memory", "changed", dp.getDescription() );
		s.flush();
		s.getTransaction().commit();
		s.close();

		s = openSession();
		s.beginTransaction();
		List list = s.createQuery( "from DataPoint where description = 'changed'" ).list();
		assertEquals( "change written to database", 0, list.size() );
		s.createQuery("delete from DataPoint").executeUpdate();
		s.getTransaction().commit();
		s.close();
	}

	public void testReadOnlyMode() {
		
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();		
		for ( int i=0; i<100; i++ ) {
			DataPoint dp = new DataPoint();
			dp.setX( new BigDecimal(i * 0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
			dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
			s.save(dp);
		}
		t.commit();
		s.close();
		
		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		int i = 0;
		ScrollableResults sr = s.createQuery("from DataPoint dp order by dp.x asc")
				.setReadOnly(true)
				.scroll(ScrollMode.FORWARD_ONLY);
		while ( sr.next() ) {
			DataPoint dp = (DataPoint) sr.get(0);
			if (++i==50) {
				s.setReadOnly(dp, false);
			}
			dp.setDescription("done!");
		}
		t.commit();
		s.clear();
		t = s.beginTransaction();
		List single = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( single.size(), 1 );
		s.createQuery("delete from DataPoint").executeUpdate();
		t.commit();
		s.close();
		
	}

	public void testReadOnlyOnTextType() {
		final String origText = "some huge text string";
		final String newText = "some even bigger text string";

		Session s = openSession();
		s.beginTransaction();
		s.setCacheMode( CacheMode.IGNORE );
		TextHolder holder = new TextHolder( origText );
		s.save( holder );
		Long id = holder.getId();
		s.getTransaction().commit();
		s.close();

		s = openSession();
		s.beginTransaction();
		s.setCacheMode( CacheMode.IGNORE );
		holder = ( TextHolder ) s.get( TextHolder.class, id );
		s.setReadOnly( holder, true );
		holder.setTheText( newText );
		s.flush();
		s.getTransaction().commit();
		s.close();

		s = openSession();
		s.beginTransaction();
		holder = ( TextHolder ) s.get( TextHolder.class, id );
		assertEquals( "change written to database", origText, holder.getTheText() );
		s.delete( holder );
		s.getTransaction().commit();
		s.close();
	}
}