/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.jpa.processor;
import static org.jboss.as.jpa.JpaLogger.ROOT_LOGGER;
import static org.jboss.as.jpa.JpaMessages.MESSAGES;
import java.lang.reflect.Constructor;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.persistence.spi.PersistenceProvider;
import org.jboss.as.jpa.config.PersistenceProviderDeploymentHolder;
import org.jboss.as.jpa.persistenceprovider.PersistenceProviderResolverImpl;
import org.jboss.as.jpa.spi.PersistenceProviderAdaptor;
import org.jboss.as.jpa.transaction.JtaManagerImpl;
import org.jboss.as.server.deployment.Attachments;
import org.jboss.as.server.deployment.DeploymentPhaseContext;
import org.jboss.as.server.deployment.DeploymentUnit;
import org.jboss.as.server.deployment.DeploymentUnitProcessingException;
import org.jboss.as.server.deployment.DeploymentUnitProcessor;
import org.jboss.as.server.deployment.DeploymentUtils;
import org.jboss.as.server.deployment.ServicesAttachment;
import org.jboss.modules.Module;
import org.jboss.modules.ModuleClassLoader;
/**
* Deploy JPA Persistence providers that are found in the application deployment.
*
* @author Scott Marlow
*/
public class PersistenceProviderProcessor implements DeploymentUnitProcessor {
private static final String PERSISTENCE_PROVIDER_CLASSNAME = PersistenceProvider.class.getName();
/**
* {@inheritDoc}
*/
public void deploy(final DeploymentPhaseContext phaseContext) throws DeploymentUnitProcessingException {
final DeploymentUnit deploymentUnit = phaseContext.getDeploymentUnit();
final Module module = deploymentUnit.getAttachment(Attachments.MODULE);
final ServicesAttachment servicesAttachment = deploymentUnit.getAttachment(Attachments.SERVICES);
if (module != null && servicesAttachment != null) {
final ModuleClassLoader deploymentModuleClassLoader = module.getClassLoader();
PersistenceProvider provider;
// collect list of persistence providers packaged with the application
final List<String> providerNames = servicesAttachment.getServiceImplementations(PERSISTENCE_PROVIDER_CLASSNAME);
List<PersistenceProvider> providerList = new ArrayList<PersistenceProvider>();
for (String providerName : providerNames) {
try {
final Class<? extends PersistenceProvider> providerClass = deploymentModuleClassLoader.loadClass(providerName).asSubclass(PersistenceProvider.class);
final Constructor<? extends PersistenceProvider> constructor = providerClass.getConstructor();
provider = constructor.newInstance();
Set<ClassLoader> deploymentClassLoaders = allDeploymentModuleClassLoaders(deploymentUnit);
ROOT_LOGGER.debugf("Deployment has its own persistence provider %s associated with classloaders %s", providerClass, deploymentClassLoaders.toString());
// register persistence provider so javax.persistence.Persistence.createEntityManagerFactory can find it
PersistenceProviderResolverImpl.getInstance().addDeploymentSpecificPersistenceProvider(provider, deploymentClassLoaders);
// TODO: instead of passing provider in via PersistenceProviderDeploymentHolder,
// it should instead be looked up via PersistenceProviderResolverImpl (still need to pass adapter in
// or add mechanism to deal with it on a per deployment basis).
providerList.add(provider);
} catch (Exception e) {
throw MESSAGES.cannotDeployApp(e, providerName);
}
}
if (providerList.size() > 0) {
final String adapterClass = deploymentUnit.getAttachment(JpaAttachments.ADAPTOR_CLASS_NAME);
PersistenceProviderAdaptor adaptor;
if (adapterClass != null) {
try {
adaptor = (PersistenceProviderAdaptor) deploymentModuleClassLoader.loadClass(adapterClass).newInstance();
adaptor.injectJtaManager(JtaManagerImpl.getInstance());
deploymentUnit.putAttachment(JpaAttachments.DEPLOYED_PERSISTENCE_PROVIDER, new PersistenceProviderDeploymentHolder(providerList, adaptor));
} catch (InstantiationException e) {
throw MESSAGES.cannotCreateAdapter(e, adapterClass);
} catch (IllegalAccessException e) {
throw MESSAGES.cannotCreateAdapter(e, adapterClass);
} catch (ClassNotFoundException e) {
throw MESSAGES.cannotCreateAdapter(e, adapterClass);
}
}
}
}
}
/**
* {@inheritDoc}
*/
public void undeploy(final DeploymentUnit deploymentUnit) {
DeploymentUnit toplevelDeploymentUnit = DeploymentUtils.getTopDeploymentUnit(deploymentUnit);
final Module module = toplevelDeploymentUnit.getAttachment(Attachments.MODULE);
Set<ClassLoader> deploymentClassLoaders = allDeploymentModuleClassLoaders(deploymentUnit);
PersistenceProviderResolverImpl.getInstance().clearCachedDeploymentSpecificProviders(deploymentClassLoaders);
}
/**
* returns the toplevel deployment module classloader and all subdeployment classloaders
*
* @param deploymentUnit
* @return
*/
private Set<ClassLoader> allDeploymentModuleClassLoaders(DeploymentUnit deploymentUnit) {
final DeploymentUnit topDeploymentUnit = DeploymentUtils.getTopDeploymentUnit(deploymentUnit);
final Module toplevelModule = topDeploymentUnit.getAttachment(Attachments.MODULE);
Set<ClassLoader> deploymentClassLoaders = new HashSet<ClassLoader>();
deploymentClassLoaders.add(toplevelModule.getClassLoader());
final List<DeploymentUnit> subDeployments = topDeploymentUnit.getAttachmentList(Attachments.SUB_DEPLOYMENTS);
for (DeploymentUnit subDeploymentUnit: subDeployments) {
final Module subDeploymentModule = subDeploymentUnit.getAttachment(Attachments.MODULE);
if (subDeploymentModule != null) {
deploymentClassLoaders.add(subDeploymentModule.getClassLoader());
}
}
return deploymentClassLoaders;
}
}