/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010, 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.id;
import java.util.Properties;
import junit.framework.TestCase;
import org.hibernate.Hibernate;
import org.hibernate.TestingDatabaseInfo;
import org.hibernate.cfg.Configuration;
import org.hibernate.cfg.Environment;
import org.hibernate.cfg.NamingStrategy;
import org.hibernate.cfg.ObjectNameNormalizer;
import org.hibernate.dialect.Dialect;
import org.hibernate.dialect.HSQLDialect;
import org.hibernate.engine.SessionFactoryImplementor;
import org.hibernate.impl.SessionImpl;
import org.hibernate.mapping.SimpleAuxiliaryDatabaseObject;
/**
* I went back to 3.3 source and grabbed the code/logic as it existed back then and crafted this
* unit test so that we can make sure the value keep being generated in the expected manner
*
* @author Steve Ebersole
*/
public class SequenceHiLoGeneratorTest extends TestCase {
private static final String TEST_SEQUENCE = "test_sequence";
private Configuration cfg;
private SessionFactoryImplementor sessionFactory;
private SequenceHiLoGenerator generator;
protected void setUp() throws Exception {
super.setUp();
Properties properties = new Properties();
properties.setProperty( SequenceGenerator.SEQUENCE, TEST_SEQUENCE );
properties.setProperty( SequenceHiLoGenerator.MAX_LO, "3" );
properties.setProperty( SequenceGenerator.PARAMETERS, "start with 1" ); // hsqldb sequences start with 0 by default :?
properties.put(
PersistentIdentifierGenerator.IDENTIFIER_NORMALIZER,
new ObjectNameNormalizer() {
protected boolean isUseQuotedIdentifiersGlobally() {
return false;
}
protected NamingStrategy getNamingStrategy() {
return cfg.getNamingStrategy();
}
}
);
Dialect dialect = new HSQLDialect();
generator = new SequenceHiLoGenerator();
//noinspection deprecation
generator.configure( Hibernate.LONG, properties, dialect );
cfg = TestingDatabaseInfo.buildBaseConfiguration()
.setProperty( Environment.HBM2DDL_AUTO, "create-drop" );
cfg.addAuxiliaryDatabaseObject(
new SimpleAuxiliaryDatabaseObject(
generator.sqlCreateStrings( dialect )[0],
generator.sqlDropStrings( dialect )[0]
)
);
sessionFactory = (SessionFactoryImplementor) cfg.buildSessionFactory();
}
protected void tearDown() throws Exception {
if ( sessionFactory != null ) {
sessionFactory.close();
}
super.tearDown();
}
public void testHiLoAlgorithm() {
SessionImpl session = (SessionImpl) sessionFactory.openSession();
session.beginTransaction();
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// initially sequence should be uninitialized
// assertEquals( 1L, generator.getHiloOptimizer().getLastSourceValue().makeValue().longValue() );
// we have to assume here since in this branch we are testing with hsqldb which does not allow access to the
// current sequence value and the optimizer does not yet know the value. On trunk (3.6), against H2, we physically
// check the sequence value in the database
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// historically the hilo generators skipped the initial block of values;
// so the first generated id value is maxlo + 1, here be 4
Long generatedValue = (Long) generator.generate( session, null );
assertEquals( 4L, generatedValue.longValue() );
// which should also perform the first read on the sequence which should set it to its "start with" value (1)
assertEquals( 1L, generator.getHiloOptimizer().getLastSourceValue().makeValue().longValue() );
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
generatedValue = (Long) generator.generate( session, null );
assertEquals( 5L, generatedValue.longValue() );
assertEquals( 1L, generator.getHiloOptimizer().getLastSourceValue().makeValue().longValue() );
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
generatedValue = (Long) generator.generate( session, null );
assertEquals( 6L, generatedValue.longValue() );
assertEquals( 1L, generator.getHiloOptimizer().getLastSourceValue().makeValue().longValue() );
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
generatedValue = (Long) generator.generate( session, null );
assertEquals( 7L, generatedValue.longValue() );
// unlike the newer strategies, the db value will not get update here. It gets updated on the next invocation
// after a clock over
assertEquals( 1L, generator.getHiloOptimizer().getLastSourceValue().makeValue().longValue() );
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
generatedValue = (Long) generator.generate( session, null );
assertEquals( 8L, generatedValue.longValue() );
// this should force an increment in the sequence value
assertEquals( 2L, generator.getHiloOptimizer().getLastSourceValue().makeValue().longValue() );
session.getTransaction().commit();
session.close();
}
}