/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. 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.html
* or glassfish/bootstrap/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 glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [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.ejb.containers;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Proxy;
import java.lang.reflect.Method;
import java.util.Map;
import java.util.HashMap;
import java.util.Iterator;
import java.util.logging.Logger;
import java.util.logging.Level;
import javax.ejb.EJBException;
import javax.ejb.EJBLocalHome;
import com.sun.ejb.Invocation;
import com.sun.ejb.InvocationInfo;
import com.sun.ejb.Container;
import com.sun.ejb.codegen.HomeGenerator;
import com.sun.enterprise.deployment.EjbDescriptor;
import com.sun.enterprise.deployment.EjbSessionDescriptor;
import com.sun.ejb.containers.util.MethodMap;
import com.sun.ejb.spi.io.IndirectlySerializable;
import com.sun.enterprise.util.LocalStringManagerImpl;
import com.sun.logging.LogDomains;
/**
* Handler for EJBLocalHome invocations through EJBLocalHome proxy.
*
* @author Kenneth Saks
*/
final class EJBLocalHomeInvocationHandler
extends ReadOnlyEJBLocalHomeImpl implements InvocationHandler {
private static final Logger logger =
LogDomains.getLogger(LogDomains.EJB_LOGGER);
private static LocalStringManagerImpl localStrings =
new LocalStringManagerImpl(EJBLocalHomeInvocationHandler.class);
private boolean isStatelessSession_;
private boolean isEntity_;
// Our associated proxy object. Used when a caller needs EJBLocalObject
// but only has InvocationHandler.
private EJBLocalHome proxy_;
private Class localHomeIntfClass_;
// Cache reference to invocation info. There is one of these per
// container. It's populated during container initialization and
// passed in when the InvocationHandler is created. This avoids the
// overhead of building the method info each time a LocalHome proxy
// is created.
private MethodMap invocationInfoMap_;
EJBLocalHomeInvocationHandler(EjbDescriptor ejbDescriptor,
Class localHomeIntf,
MethodMap invocationInfoMap)
throws Exception {
if( ejbDescriptor instanceof EjbSessionDescriptor ) {
isEntity_ = false;
isStatelessSession_ =
((EjbSessionDescriptor)ejbDescriptor).isStateless();
} else {
isStatelessSession_ = false;
isEntity_ = true;
}
invocationInfoMap_ = invocationInfoMap;
localHomeIntfClass_ = localHomeIntf;
// NOTE : Container is not set on super-class until after
// constructor is called.
}
public void setProxy(EJBLocalHome proxy) {
proxy_ = proxy;
}
protected EJBLocalHome getEJBLocalHome() {
return proxy_;
}
/**
* Called by EJBLocalHome proxy.
*/
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable {
// NOTE : be careful with "args" parameter. It is null
// if method signature has 0 arguments.
try {
((BaseContainer) getContainer()).onEnteringContainer();
Class methodClass = method.getDeclaringClass();
if( methodClass == java.lang.Object.class ) {
return InvocationHandlerUtil.invokeJavaObjectMethod
(this, method, args);
} else if( methodClass == IndirectlySerializable.class ) {
return this.getSerializableObjectFactory();
} else if( methodClass == ReadOnlyEJBLocalHome.class ) {
// ReadOnlyBeanLocalNotifier getReadOnlyBeanLocalNotifier();
return super.getReadOnlyBeanLocalNotifier();
}
// Use optimized version of get that takes param count as an argument.
InvocationInfo invInfo = (InvocationInfo)
invocationInfoMap_.get(method, ((args != null) ? args.length : 0) );
if( invInfo == null ) {
throw new IllegalStateException("Unknown method :" + method);
}
if( (methodClass == javax.ejb.EJBLocalHome.class) ||
invInfo.ejbIntfOverride ) {
// There is only one method on javax.ejb.EJBLocalHome
super.remove(args[0]);
return null;
} else if(methodClass == GenericEJBLocalHome.class) {
// This is a creation request through the EJB 3.0
// client view, so just create a local business object and
// return it.
EJBLocalObjectImpl localImpl =
createEJBLocalBusinessObjectImpl();
return localImpl.getClientObject((String) args[0]);
}
// Process finder, create method, or home method.
EJBLocalObjectImpl localObjectImpl = null;
Object returnValue = null;
if( !isEntity_ && invInfo.startsWithCreate ) {
localObjectImpl = createEJBLocalObjectImpl();
returnValue = localObjectImpl.getClientObject();
}
if( !isStatelessSession_ ) {
if( invInfo.targetMethod1 == null ) {
Object [] params = new Object[]
{ invInfo.ejbName, "LocalHome",
invInfo.method.toString() };
String errorMsg = localStrings.getLocalString
("ejb.bean_class_method_not_found", "", params);
logger.log(Level.SEVERE, "ejb.bean_class_method_not_found",
params);
throw new EJBException(errorMsg);
}
Invocation inv = new Invocation();
inv.isLocal = true;
inv.isHome = true;
inv.method = method;
inv.clientInterface = localHomeIntfClass_;
// Set cached invocation params. This will save additional lookups
// in BaseContainer.
inv.transactionAttribute = invInfo.txAttr;
inv.securityPermissions = invInfo.securityPermissions;
inv.invocationInfo = invInfo;
if( !isEntity_ && invInfo.startsWithCreate ) {
inv.ejbObject = (EJBLocalRemoteObject) localObjectImpl;
}
try {
container.preInvoke(inv);
if( invInfo.startsWithCreate ) {
Object ejbCreateReturnValue = container.invokeTargetBeanMethod(
invInfo.targetMethod1, inv, inv.ejb, args, null);
if( isEntity_ ) {
container.postCreate(inv, ejbCreateReturnValue);
container.invokeTargetBeanMethod(invInfo.targetMethod2,
inv, inv.ejb, args, null);
}
if( inv.ejbObject != null ) {
returnValue = ((EJBLocalObjectImpl)inv.ejbObject)
.getClientObject();
}
} else if (invInfo.startsWithFindByPrimaryKey) {
EntityContainer entityContainer = (EntityContainer) container;
returnValue = entityContainer.invokeFindByPrimaryKey(
invInfo.targetMethod1, inv, args);
} else if ( invInfo.startsWithFind ) {
Object pKeys = container.invokeTargetBeanMethod(invInfo.targetMethod1,
inv, inv.ejb, args, null);
returnValue = container.postFind(inv, pKeys, null);
} else {
returnValue = container.invokeTargetBeanMethod(invInfo.targetMethod1,
inv, inv.ejb, args, null);
}
} catch(InvocationTargetException ite) {
inv.exception = ite.getCause();
} catch(Throwable c) {
inv.exception = c;
} finally {
container.postInvoke(inv);
}
if (inv.exception != null) {
InvocationHandlerUtil.throwLocalException
(inv.exception, method.getExceptionTypes());
}
}
return returnValue;
} finally {
((BaseContainer) getContainer()).onLeavingContainer();
}
}
}
|
