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Hibernate example source code file (DialectFactoryTest.java)

This example Hibernate source code file (DialectFactoryTest.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

apache, class, derby, derby, dialectresolver, hibernateexception, hibernateexception, jdbc, oracle, properties, server, server, sql, sql, test, test, util

The Hibernate DialectFactoryTest.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008-2011, 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.dialect.resolver;

import java.sql.Connection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

import org.junit.Before;
import org.junit.Test;

import org.hibernate.HibernateException;
import org.hibernate.cfg.Environment;
import org.hibernate.dialect.DB2Dialect;
import org.hibernate.dialect.DerbyDialect;
import org.hibernate.dialect.DerbyTenFiveDialect;
import org.hibernate.dialect.DerbyTenSevenDialect;
import org.hibernate.dialect.DerbyTenSixDialect;
import org.hibernate.dialect.H2Dialect;
import org.hibernate.dialect.HSQLDialect;
import org.hibernate.dialect.InformixDialect;
import org.hibernate.dialect.IngresDialect;
import org.hibernate.dialect.Mocks;
import org.hibernate.dialect.MySQLDialect;
import org.hibernate.dialect.Oracle10gDialect;
import org.hibernate.dialect.Oracle8iDialect;
import org.hibernate.dialect.Oracle9iDialect;
import org.hibernate.dialect.PostgreSQLDialect;
import org.hibernate.dialect.SQLServerDialect;
import org.hibernate.dialect.SybaseASE15Dialect;
import org.hibernate.dialect.SybaseAnywhereDialect;
import org.hibernate.dialect.TestingDialects;
import org.hibernate.service.classloading.internal.ClassLoaderServiceImpl;
import org.hibernate.service.classloading.spi.ClassLoadingException;
import org.hibernate.service.jdbc.dialect.internal.DialectFactoryImpl;
import org.hibernate.service.jdbc.dialect.internal.DialectResolverSet;
import org.hibernate.service.jdbc.dialect.internal.StandardDialectResolver;
import org.hibernate.service.jdbc.dialect.spi.DialectResolver;
import org.hibernate.testing.junit4.BaseUnitTestCase;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.fail;

/**
 * @author Steve Ebersole
 */
public class DialectFactoryTest extends BaseUnitTestCase {
	private DialectFactoryImpl dialectFactory;

	@Before
	public void setUp() {
		dialectFactory = new DialectFactoryImpl();
		dialectFactory.setClassLoaderService( new ClassLoaderServiceImpl( getClass().getClassLoader() ) );
		dialectFactory.setDialectResolver( new StandardDialectResolver() );
	}

	@Test
	public void testExplicitlySuppliedDialectClassName() {
		final Map<String, String> configValues = new HashMap();

		configValues.put( Environment.DIALECT, "org.hibernate.dialect.HSQLDialect" );
		assertEquals( HSQLDialect.class, dialectFactory.buildDialect( configValues, null ).getClass() );

		configValues.put( Environment.DIALECT, "org.hibernate.dialect.NoSuchDialect" );
		try {
			dialectFactory.buildDialect( configValues, null );
			fail();
		}
		catch ( HibernateException e ) {
			assertEquals( "unexpected exception type", ClassLoadingException.class, e.getCause().getClass() );
		}

		configValues.put( Environment.DIALECT, "java.lang.Object" );
		try {
			dialectFactory.buildDialect( configValues, null );
			fail();
		}
		catch ( HibernateException e ) {
			assertEquals( "unexpected exception type", ClassCastException.class, e.getCause().getClass() );
		}
	}

	@Test
	public void testBuildDialectByProperties() {
		Properties props = new Properties();

		try {
			dialectFactory.buildDialect( props, null );
			fail();
		}
		catch ( HibernateException e ) {
			assertNull( e.getCause() );
		}

		props.setProperty( Environment.DIALECT, "org.hibernate.dialect.HSQLDialect" );
		assertEquals( HSQLDialect.class, dialectFactory.buildDialect( props, null ).getClass() );
	}

	@Test
	public void testPreregisteredDialects() {
		DialectResolver resolver = new StandardDialectResolver();
		testDetermination( "HSQL Database Engine", HSQLDialect.class, resolver );
		testDetermination( "H2", H2Dialect.class, resolver );
		testDetermination( "MySQL", MySQLDialect.class, resolver );
		testDetermination( "PostgreSQL", PostgreSQLDialect.class, resolver );
		testDetermination( "Apache Derby", 10, 4, DerbyDialect.class, resolver );
		testDetermination( "Apache Derby", 10, 5, DerbyTenFiveDialect.class, resolver );
		testDetermination( "Apache Derby", 10, 6, DerbyTenSixDialect.class, resolver );
		testDetermination( "Apache Derby", 11, 5, DerbyTenSevenDialect.class, resolver );
		testDetermination( "Ingres", IngresDialect.class, resolver );
		testDetermination( "ingres", IngresDialect.class, resolver );
		testDetermination( "INGRES", IngresDialect.class, resolver );
		testDetermination( "Microsoft SQL Server Database", SQLServerDialect.class, resolver );
		testDetermination( "Microsoft SQL Server", SQLServerDialect.class, resolver );
		testDetermination( "Sybase SQL Server", SybaseASE15Dialect.class, resolver );
		testDetermination( "Adaptive Server Enterprise", SybaseASE15Dialect.class, resolver );
		testDetermination( "Adaptive Server Anywhere", SybaseAnywhereDialect.class, resolver );
		testDetermination( "Informix Dynamic Server", InformixDialect.class, resolver );
		testDetermination( "DB2/NT", DB2Dialect.class, resolver );
		testDetermination( "DB2/LINUX", DB2Dialect.class, resolver );
		testDetermination( "DB2/6000", DB2Dialect.class, resolver );
		testDetermination( "DB2/HPUX", DB2Dialect.class, resolver );
		testDetermination( "DB2/SUN", DB2Dialect.class, resolver );
		testDetermination( "DB2/LINUX390", DB2Dialect.class, resolver );
		testDetermination( "DB2/AIX64", DB2Dialect.class, resolver );
		testDetermination( "Oracle", 8, Oracle8iDialect.class, resolver );
		testDetermination( "Oracle", 9, Oracle9iDialect.class, resolver );
		testDetermination( "Oracle", 10, Oracle10gDialect.class, resolver );
		testDetermination( "Oracle", 11, Oracle10gDialect.class, resolver );
	}

	@Test
	public void testCustomDialects() {
		DialectResolverSet resolvers = new DialectResolverSet();
		resolvers.addResolver( new TestingDialects.MyDialectResolver1() );
		resolvers.addResolver( new TestingDialects.MyDialectResolver2() );
		resolvers.addResolver( new TestingDialects.ErrorDialectResolver1() );
		resolvers.addResolver( new TestingDialects.ErrorDialectResolver2() );
		resolvers.addResolver( new TestingDialects.MyOverridingDialectResolver1() );
		//DialectFactory.registerDialectResolver( "org.hibernate.dialect.NoSuchDialectResolver" );
		//DialectFactory.registerDialectResolver( "java.lang.Object" );

		testDetermination( "MyDatabase1", TestingDialects.MyDialect1.class, resolvers );
		testDetermination( "MyDatabase2", 1, TestingDialects.MyDialect21.class, resolvers );
		testDetermination( "MyTrickyDatabase1", TestingDialects.MyDialect1.class, resolvers );

		// This should be mapped to DB2Dialect by default, but actually it will be
		// my custom dialect because I have registered MyOverridingDialectResolver1.
		testDetermination( "DB2/MySpecialPlatform", TestingDialects.MySpecialDB2Dialect.class, resolvers );

		try {
			testDetermination( "ErrorDatabase1", Void.TYPE, resolvers );
			fail();
		}
		catch ( HibernateException e ) {
		}

		try {
			testDetermination( "ErrorDatabase2", Void.TYPE, resolvers );
			fail();
		}
		catch ( HibernateException e ) {
		}
	}

	@Test
	public void testDialectNotFound() {
		Map properties = Collections.EMPTY_MAP;
		try {
			dialectFactory.buildDialect( properties, Mocks.createConnection( "NoSuchDatabase", 666 ) );
			fail();
		}
		catch ( HibernateException e ) {
			assertNull( e.getCause() );
		}
	}

	private void testDetermination(String databaseName, Class clazz, DialectResolver resolver) {
		testDetermination( databaseName, -9999, clazz, resolver );
	}

	private void testDetermination(String databaseName, int databaseMajorVersion, Class clazz, DialectResolver resolver) {
		testDetermination( databaseName, databaseMajorVersion, -9999, clazz, resolver );
	}

	private void testDetermination(String databaseName, int majorVersion, int minorVersion, Class clazz, DialectResolver resolver) {
		dialectFactory.setDialectResolver( resolver );
		Properties properties = new Properties();
		Connection conn = Mocks.createConnection( databaseName, majorVersion, minorVersion );
		assertEquals( clazz, dialectFactory.buildDialect( properties, conn ).getClass() );
	}
}

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