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* as indicated by the @author tags. See the copyright.txt file in the
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*
* This is free software; you can redistribute it and/or modify it
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* published by the Free Software Foundation; either version 2.1 of
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*
* This software is distributed in the hope that it will be useful,
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* 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
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package org.jboss.as.jpa.injectors;
import java.lang.reflect.Proxy;
import java.util.Map;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.PersistenceContextType;
import javax.persistence.SynchronizationType;
import org.jboss.as.ee.component.InjectionSource;
import org.jboss.as.jpa.config.ExtendedPersistenceInheritance;
import org.jboss.as.jpa.config.JPADeploymentSettings;
import org.jboss.as.jpa.container.CreatedEntityManagers;
import org.jboss.as.jpa.container.EntityManagerUnwrappedTargetInvocationHandler;
import org.jboss.as.jpa.container.ExtendedEntityManager;
import org.jboss.as.jpa.container.ExtendedPersistenceDeepInheritance;
import org.jboss.as.jpa.container.ExtendedPersistenceShallowInheritance;
import org.jboss.as.jpa.container.TransactionScopedEntityManager;
import org.jboss.as.jpa.messages.JpaLogger;
import org.jboss.as.jpa.service.JPAService;
import org.jboss.as.jpa.service.PersistenceUnitServiceImpl;
import org.jboss.as.naming.ManagedReference;
import org.jboss.as.naming.ManagedReferenceFactory;
import org.jboss.as.naming.ValueManagedReference;
import org.jboss.as.server.deployment.DeploymentPhaseContext;
import org.jboss.as.server.deployment.DeploymentUnitProcessingException;
import org.jboss.msc.inject.Injector;
import org.jboss.msc.service.ServiceBuilder;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.ServiceRegistry;
import org.jboss.msc.value.ImmediateValue;
import org.jipijapa.plugin.spi.PersistenceUnitMetadata;
import static org.jboss.as.jpa.messages.JpaLogger.JPA_LOGGER;
/**
* Represents the PersistenceContext injected into a component.
*
* @author Scott Marlow
*/
public class PersistenceContextInjectionSource extends InjectionSource {
private final PersistenceContextType type;
private final PersistenceContextJndiInjectable injectable;
private final ServiceName puServiceName;
/**
* Constructor for the PersistenceContextInjectorService
*
* @param type The persistence context type
* @param properties The persistence context properties
* @param puServiceName represents the deployed persistence.xml that we are going to use.
* @param serviceRegistry The MSC service registry which will be used to find the PersistenceContext service
* @param scopedPuName the fully scoped reference to the persistence.xml
* @param injectionTypeName is normally "javax.persistence.EntityManager" but could be a different target class
* for example "org.hibernate.Session" in which case, EntityManager.unwrap(org.hibernate.Session.class is called)
* @param pu
* @param jpaDeploymentSettings Optional {@link JPADeploymentSettings} applicable for the persistence context
*/
public PersistenceContextInjectionSource(final PersistenceContextType type, final SynchronizationType synchronizationType , final Map properties, final ServiceName puServiceName,
final ServiceRegistry serviceRegistry, final String scopedPuName, final String injectionTypeName, final PersistenceUnitMetadata pu, final JPADeploymentSettings jpaDeploymentSettings) {
this.type = type;
injectable = new PersistenceContextJndiInjectable(puServiceName, serviceRegistry, this.type, synchronizationType , properties, scopedPuName, injectionTypeName, pu, jpaDeploymentSettings);
this.puServiceName = puServiceName;
}
public void getResourceValue(final ResolutionContext resolutionContext, final ServiceBuilder<?> serviceBuilder, final DeploymentPhaseContext phaseContext, final Injector<ManagedReferenceFactory> injector) throws
DeploymentUnitProcessingException {
serviceBuilder.addDependencies(puServiceName);
injector.inject(injectable);
}
public boolean equals(Object other) {
if (other instanceof PersistenceContextInjectionSource) {
PersistenceContextInjectionSource source = (PersistenceContextInjectionSource) other;
return (source.puServiceName.equals(puServiceName));
}
return false;
}
public int hashCode() {
return puServiceName.hashCode();
}
private static final class PersistenceContextJndiInjectable implements ManagedReferenceFactory {
private final ServiceName puServiceName;
private final ServiceRegistry serviceRegistry;
private final PersistenceContextType type;
private final SynchronizationType synchronizationType;
private final Map properties;
private final String unitName;
private final String injectionTypeName;
private final PersistenceUnitMetadata pu;
private final JPADeploymentSettings jpaDeploymentSettings;
private static final String ENTITY_MANAGER_CLASS = "javax.persistence.EntityManager";
public PersistenceContextJndiInjectable(
final ServiceName puServiceName,
final ServiceRegistry serviceRegistry,
final PersistenceContextType type,
SynchronizationType synchronizationType,
final Map properties,
final String unitName,
final String injectionTypeName,
final PersistenceUnitMetadata pu,
final JPADeploymentSettings jpaDeploymentSettings) {
this.puServiceName = puServiceName;
this.serviceRegistry = serviceRegistry;
this.type = type;
this.properties = properties;
this.unitName = unitName;
this.injectionTypeName = injectionTypeName;
this.pu = pu;
this.synchronizationType = synchronizationType;
this.jpaDeploymentSettings = jpaDeploymentSettings;
}
@Override
public ManagedReference getReference() {
PersistenceUnitServiceImpl service = (PersistenceUnitServiceImpl) serviceRegistry.getRequiredService(puServiceName).getValue();
EntityManagerFactory emf = service.getEntityManagerFactory();
EntityManager entityManager;
boolean standardEntityManager = ENTITY_MANAGER_CLASS.equals(injectionTypeName);
if (type.equals(PersistenceContextType.TRANSACTION)) {
entityManager = new TransactionScopedEntityManager(unitName, properties, emf, synchronizationType);
if (JPA_LOGGER.isDebugEnabled())
JPA_LOGGER.debugf("created new TransactionScopedEntityManager for unit name=%s", unitName);
} else {
boolean useDeepInheritance = !ExtendedPersistenceInheritance.SHALLOW.equals(JPAService.getDefaultExtendedPersistenceInheritance());
if (jpaDeploymentSettings != null) {
useDeepInheritance = ExtendedPersistenceInheritance.DEEP.equals(jpaDeploymentSettings.getExtendedPersistenceInheritanceType());
}
boolean createdNewExtendedPersistence = false;
ExtendedEntityManager entityManager1;
// handle PersistenceContextType.EXTENDED
if (useDeepInheritance) {
entityManager1 = ExtendedPersistenceDeepInheritance.INSTANCE.findExtendedPersistenceContext(unitName);
}
else {
entityManager1 = ExtendedPersistenceShallowInheritance.INSTANCE.findExtendedPersistenceContext(unitName);
}
if (entityManager1 == null) {
entityManager1 = new ExtendedEntityManager(unitName, emf.createEntityManager(properties), synchronizationType);
createdNewExtendedPersistence = true;
if (JPA_LOGGER.isDebugEnabled())
JPA_LOGGER.debugf("created new ExtendedEntityManager for unit name=%s, useDeepInheritance = %b", unitName, useDeepInheritance);
} else {
entityManager1.increaseReferenceCount();
if (JPA_LOGGER.isDebugEnabled())
JPA_LOGGER.debugf("inherited existing ExtendedEntityManager from SFSB invocation stack, unit name=%s, " +
"%d beans sharing ExtendedEntityManager, useDeepInheritance = %b", unitName, entityManager1.getReferenceCount(), useDeepInheritance);
}
entityManager = entityManager1;
// register the EntityManager on TL so that SFSBCreateInterceptor will see it.
// this is important for creating a new XPC or inheriting existing XPC from SFSBCallStack
CreatedEntityManagers.registerPersistenceContext(entityManager1);
if (createdNewExtendedPersistence) {
//register the pc so it is accessible to other SFSB's during the creation process
if (useDeepInheritance) {
ExtendedPersistenceDeepInheritance.INSTANCE.registerExtendedPersistenceContext(unitName, entityManager1);
}
else {
ExtendedPersistenceShallowInheritance.INSTANCE.registerExtendedPersistenceContext(unitName, entityManager1);
}
}
}
if (!standardEntityManager) {
/**
* inject non-standard wrapped class (e.g. org.hibernate.Session).
* To accomplish this, we will create an instance of the (underlying provider's) entity manager and
* invoke the EntityManager.unwrap(TargetInjectionClass).
*/
Class extensionClass;
try {
// provider classes should be on application classpath
extensionClass = pu.getClassLoader().loadClass(injectionTypeName);
} catch (ClassNotFoundException e) {
throw JpaLogger.ROOT_LOGGER.cannotLoadFromJpa(e, injectionTypeName);
}
// get example of target object
Object targetValueToInject = entityManager.unwrap(extensionClass);
// build array of classes that proxy will represent.
Class[] targetInterfaces = targetValueToInject.getClass().getInterfaces();
Class[] proxyInterfaces = new Class[targetInterfaces.length + 1]; // include extra element for extensionClass
boolean alreadyHasInterfaceClass = false;
for (int interfaceIndex = 0; interfaceIndex < targetInterfaces.length; interfaceIndex++) {
Class interfaceClass = targetInterfaces[interfaceIndex];
if (interfaceClass.equals(extensionClass)) {
proxyInterfaces = targetInterfaces; // targetInterfaces already has all interfaces
alreadyHasInterfaceClass = true;
break;
}
proxyInterfaces[1 + interfaceIndex] = interfaceClass;
}
if (!alreadyHasInterfaceClass) {
proxyInterfaces[0] = extensionClass;
}
EntityManagerUnwrappedTargetInvocationHandler entityManagerUnwrappedTargetInvocationHandler =
new EntityManagerUnwrappedTargetInvocationHandler(entityManager, extensionClass);
Object proxyForUnwrappedObject = Proxy.newProxyInstance(
extensionClass.getClassLoader(), //use the target classloader so the proxy has the same scope
proxyInterfaces,
entityManagerUnwrappedTargetInvocationHandler
);
if (JPA_LOGGER.isDebugEnabled())
JPA_LOGGER.debugf("injecting entity manager into a '%s' (unit name=%s)", extensionClass.getName(), unitName);
return new ValueManagedReference(new ImmediateValue<Object>(proxyForUnwrappedObject));
}
return new ValueManagedReference(new ImmediateValue<Object>(entityManager));
}
}
}