/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2012 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.enterprise.container.common.impl;
import com.sun.enterprise.container.common.spi.util.ComponentEnvManager;
import com.sun.enterprise.deployment.*;
import com.sun.logging.LogDomains;
import org.glassfish.api.invocation.ComponentInvocation;
import static org.glassfish.api.invocation.ComponentInvocation.ComponentInvocationType;
import org.glassfish.api.invocation.InvocationManager;
import org.glassfish.hk2.api.ServiceLocator;
import org.glassfish.internal.api.Globals;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Cache;
import javax.persistence.PersistenceUnitUtil;
import javax.persistence.Query;
import javax.persistence.SynchronizationType;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.metamodel.Metamodel;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.Serializable;
import java.util.Map;
import java.util.Set;
import java.util.logging.Logger;
/**
* Wrapper for application references to entity manager factories.
* A new instance of this class will be created for each injected
* EntityManagerFactory reference or each lookup of an EntityManagerFactory
* reference within the component jndi environment.
*
* @author Kenneth Saks
*/
public class EntityManagerFactoryWrapper
implements EntityManagerFactory, Serializable {
static Logger _logger=LogDomains.getLogger(EntityManagerFactoryWrapper.class, LogDomains.UTIL_LOGGER);
private String unitName;
private transient InvocationManager invMgr;
private transient EntityManagerFactory entityManagerFactory;
private transient ComponentEnvManager compEnvMgr;
public EntityManagerFactoryWrapper(String unitName, InvocationManager invMgr,
ComponentEnvManager compEnvMgr) {
this.unitName = unitName;
this.invMgr = invMgr;
this.compEnvMgr = compEnvMgr;
}
private EntityManagerFactory getDelegate() {
if( entityManagerFactory == null ) {
entityManagerFactory = lookupEntityManagerFactory(invMgr, compEnvMgr, unitName);
if( entityManagerFactory == null ) {
throw new IllegalStateException
("Unable to retrieve EntityManagerFactory for unitName "
+ unitName);
}
}
return entityManagerFactory;
}
@Override
public EntityManager createEntityManager() {
return getDelegate().createEntityManager();
}
@Override
public EntityManager createEntityManager(Map map) {
return getDelegate().createEntityManager(map);
}
@Override
public EntityManager createEntityManager(SynchronizationType synchronizationType) {
return getDelegate().createEntityManager(synchronizationType);
}
@Override
public EntityManager createEntityManager(SynchronizationType synchronizationType, Map map) {
return getDelegate().createEntityManager(synchronizationType, map);
}
@Override
public void addNamedQuery(String name, Query query) {
getDelegate().addNamedQuery(name, query);
}
@Override
public <T> T unwrap(Class<T> cls) {
return getDelegate().unwrap(cls);
}
@Override
public CriteriaBuilder getCriteriaBuilder() {
return getDelegate().getCriteriaBuilder();
}
@Override
public Metamodel getMetamodel() {
return getDelegate().getMetamodel();
}
@Override
public Map<java.lang.String, java.lang.Object> getProperties() {
return getDelegate().getProperties();
}
@Override
public void close() {
getDelegate().close();
}
@Override
public boolean isOpen() {
return getDelegate().isOpen();
}
@Override
public Cache getCache() {
return getDelegate().getCache();
}
@Override
public PersistenceUnitUtil getPersistenceUnitUtil() {
return getDelegate().getPersistenceUnitUtil();
}
/**
* Lookup physical EntityManagerFactory based on current component
* invocation.
* @param invMgr invocationmanager
* @param emfUnitName unit name of entity manager factory or null if not
* specified.
* @return EntityManagerFactory or null if no matching factory could be
* found.
**/
static EntityManagerFactory lookupEntityManagerFactory(InvocationManager invMgr,
ComponentEnvManager compEnvMgr, String emfUnitName)
{
ComponentInvocation inv = invMgr.getCurrentInvocation();
EntityManagerFactory emf = null;
if( inv != null ) {
Object desc = compEnvMgr.getCurrentJndiNameEnvironment();
if (desc != null) {
emf = lookupEntityManagerFactory(inv.getInvocationType(),
emfUnitName, desc);
}
}
return emf;
}
public static EntityManagerFactory lookupEntityManagerFactory(ComponentInvocationType invType,
String emfUnitName, Object descriptor) {
Application app = null;
BundleDescriptor module = null;
EntityManagerFactory emf = null;
switch (invType) {
case EJB_INVOCATION:
if (descriptor instanceof EjbDescriptor) {
EjbDescriptor ejbDesc = (EjbDescriptor) descriptor;
module = (BundleDescriptor) ejbDesc.getEjbBundleDescriptor().getModuleDescriptor().getDescriptor();
app = module.getApplication();
break;
}
// EJB invocation in web bundle?
// fall through into web case...
case SERVLET_INVOCATION:
module = (WebBundleDescriptor) descriptor;
app = module.getApplication();
break;
case APP_CLIENT_INVOCATION:
module = (ApplicationClientDescriptor) descriptor;
app = module.getApplication();
break;
default:
break;
}
// First check module-level for a match.
if (module != null) {
if (emfUnitName != null) {
emf = module.getEntityManagerFactory(emfUnitName);
} else {
Set<EntityManagerFactory> emFactories = module
.getEntityManagerFactories();
if (emFactories.size() == 1) {
emf = emFactories.iterator().next();
}
}
}
// If we're in an .ear and no module-level persistence unit was
// found, check for an application-level match.
if ((app != null) && (emf == null)) {
if (emfUnitName != null) {
emf = app.getEntityManagerFactory(emfUnitName, module);
} else {
Set<EntityManagerFactory> emFactories = app
.getEntityManagerFactories();
if (emFactories.size() == 1) {
emf = emFactories.iterator().next();
}
}
}
return emf;
}
private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException {
stream.defaultReadObject();
//Initialize the transients that were passed at ctor.
ServiceLocator defaultServiceLocator = Globals.getDefaultHabitat();
invMgr = defaultServiceLocator.getService(InvocationManager.class);
compEnvMgr = defaultServiceLocator.getService(ComponentEnvManager.class);
}
}