/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2013, 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.engine.transaction.jta.platform.internal;
import java.util.Map;
import org.hibernate.boot.registry.classloading.spi.ClassLoaderService;
import org.hibernate.boot.registry.classloading.spi.ClassLoadingException;
import org.hibernate.engine.transaction.jta.platform.spi.JtaPlatform;
import org.hibernate.engine.transaction.jta.platform.spi.JtaPlatformProvider;
import org.hibernate.engine.transaction.jta.platform.spi.JtaPlatformResolver;
import org.hibernate.service.spi.ServiceRegistryImplementor;
import org.jboss.logging.Logger;
/**
* @author Steve Ebersole
*/
public class StandardJtaPlatformResolver implements JtaPlatformResolver {
public static final StandardJtaPlatformResolver INSTANCE = new StandardJtaPlatformResolver();
private static final Logger log = Logger.getLogger( StandardJtaPlatformResolver.class );
@Override
public JtaPlatform resolveJtaPlatform(Map configurationValues, ServiceRegistryImplementor registry) {
final ClassLoaderService classLoaderService = registry.getService( ClassLoaderService.class );
// Initially look for a JtaPlatformProvider
for ( JtaPlatformProvider provider : classLoaderService.loadJavaServices( JtaPlatformProvider.class ) ) {
final JtaPlatform providedPlatform = provider.getProvidedJtaPlatform();
if ( providedPlatform!= null ) {
return providedPlatform;
}
}
// look for classes on the ClassLoader (via service) that we know indicate certain JTA impls or
// indicate running in certain environments with known JTA impls.
//
// IMPL NOTE : essentially we attempt Class lookups and use the exceptions from the class(es) not
// being found as the indicator
// JBoss ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
try {
classLoaderService.classForName( JBossStandAloneJtaPlatform.JBOSS_TM_CLASS_NAME );
classLoaderService.classForName( JBossStandAloneJtaPlatform.JBOSS_UT_CLASS_NAME );
// we know that the JBoss TS classes are available
// if neither of these look-ups resulted in an error (no such class), then JBossTM is available on
// the classpath
//
// todo : we cannot really distinguish between the need for JBossStandAloneJtaPlatform versus JBossApServerJtaPlatform
// but discussions with David led to the JtaPlatformProvider solution above, so inside JBoss AS we
// should be relying on that
return new JBossStandAloneJtaPlatform();
}
catch (ClassLoadingException ignore) {
}
// Bitronix ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
try {
classLoaderService.classForName( BitronixJtaPlatform.TM_CLASS_NAME );
return new BitronixJtaPlatform();
}
catch (ClassLoadingException ignore) {
}
// JOnAS ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
try {
classLoaderService.classForName( JOnASJtaPlatform.TM_CLASS_NAME );
return new JOnASJtaPlatform();
}
catch (ClassLoadingException ignore) {
}
// JOTM ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
try {
classLoaderService.classForName( JOTMJtaPlatform.TM_CLASS_NAME );
return new JOTMJtaPlatform();
}
catch (ClassLoadingException ignore) {
}
// WebSphere ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
for ( WebSphereJtaPlatform.WebSphereEnvironment webSphereEnvironment
: WebSphereJtaPlatform.WebSphereEnvironment.values() ) {
try {
Class accessClass = classLoaderService.classForName( webSphereEnvironment.getTmAccessClassName() );
return new WebSphereJtaPlatform( accessClass, webSphereEnvironment );
}
catch (ClassLoadingException ignore) {
}
}
// Finally, return the default...
log.debugf( "Could not resolve JtaPlatform, using default [%s]", NoJtaPlatform.class.getName() );
return NoJtaPlatform.INSTANCE;
}
}