/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.tuscany.sca.binding.ejb.provider;
import org.apache.tuscany.sca.binding.ejb.EJBBinding;
import org.apache.tuscany.sca.binding.ejb.util.EJBHandler;
import org.apache.tuscany.sca.binding.ejb.util.NamingEndpoint;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.interfacedef.java.JavaOperation;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.invocation.Message;
/**
* EJBTargetInvoker
*
* @version $Rev: 980450 $ $Date: 2010-07-29 15:04:40 +0100 (Thu, 29 Jul 2010) $
*/
public class EJBBindingInvoker implements Invoker {
private Operation operation;
private String location;
private Class serviceInterface;
public EJBBindingInvoker(EJBBinding ejbBinding, Class serviceInterface, Operation operation) {
this.serviceInterface = serviceInterface;
this.location = ejbBinding.getURI();
this.operation = operation;
}
public Message invoke(Message msg) {
ClassLoader tccl = Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(serviceInterface.getClassLoader());
Object resp = doInvoke(msg.getBody());
msg.setBody(resp);
} catch (Throwable e) {
e.printStackTrace();
msg.setFaultBody(e);
} finally {
Thread.currentThread().setContextClassLoader(tccl);
}
return msg;
}
/**
* Invoke a EJB operation
*
* @param payload
* @return
*/
public Object doInvoke(final Object payload) {
// construct NamingendPoint
NamingEndpoint endpoint = getNamingEndpoint();
// lookup home and ejb stub
EJBHandler ejbHandler = new EJBHandler(endpoint, serviceInterface);
//
// If we really couldn't have anything but a JavaOperation maybe we should
// remove the if-block. Assuming we had some other type of operation, if
// that is possible, we might still need to map to a Java operation name,
// (for example because the WSDL operation name might be set using a JSR-181
// annotation to something other than the Java operation name.
//
// But for now we'll keep the else-block in here.
//
String methodName = null;
if (operation instanceof JavaOperation) {
JavaOperation javaOp = (JavaOperation) operation;
methodName = javaOp.getJavaMethod().getName();
} else {
methodName = operation.getName();
}
// invoke business method on ejb
Object response = ejbHandler.invoke(methodName, (Object[])payload);
return response;
}
protected NamingEndpoint getNamingEndpoint() {
return new NamingEndpoint(location);
}
}