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/*
* 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.local;
import org.apache.tuscany.sca.databinding.Mediator;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.invocation.Interceptor;
import org.apache.tuscany.sca.invocation.InvocationChain;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.invocation.Message;
import org.apache.tuscany.sca.invocation.Phase;
import org.apache.tuscany.sca.runtime.RuntimeEndpoint;
import org.apache.tuscany.sca.runtime.RuntimeEndpointReference;
/**
* The Local binding invoker
*/
public class LocalBindingInvoker implements Interceptor {
private InvocationChain chain;
private Mediator mediator;
private Operation sourceOperation;
private Operation targetOperation;
private boolean passByValue;
private RuntimeEndpoint ep;
/**
* Construct a SCABindingInvoker that delegates to the service invocaiton chain
*/
public LocalBindingInvoker(InvocationChain chain, Operation sourceOperation, Mediator mediator, boolean passByValue, RuntimeEndpointReference epr) {
super();
this.chain = chain;
this.mediator = mediator;
this.sourceOperation = sourceOperation;
this.targetOperation = chain.getTargetOperation();
this.passByValue = passByValue;
this.ep = (RuntimeEndpoint)epr.getTargetEndpoint();
}
/**
* @see org.apache.tuscany.sca.invocation.Interceptor#getNext()
*/
public Invoker getNext() {
return chain.getHeadInvoker(Phase.SERVICE_POLICY);
}
/**
* @see org.apache.tuscany.sca.invocation.Interceptor#setNext(org.apache.tuscany.sca.invocation.Invoker)
*/
public void setNext(Invoker next) {
// NOOP
}
/**
* @see org.apache.tuscany.sca.invocation.Invoker#invoke(org.apache.tuscany.sca.invocation.Message)
*/
public Message invoke(Message msg) {
if (passByValue) {
msg.setBody(mediator.copyInput(msg.getBody(), sourceOperation, targetOperation));
}
ep.getInvocationChains();
if ( !ep.getCallbackEndpointReferences().isEmpty() ) {
RuntimeEndpointReference asyncEPR = (RuntimeEndpointReference) ep.getCallbackEndpointReferences().get(0);
// Place a link to the callback EPR into the message headers...
msg.getHeaders().put("ASYNC_CALLBACK", asyncEPR );
}
Message resultMsg = getNext().invoke(msg);
if (passByValue) {
// Note source and target operation swapped so result is in source class loader
if (resultMsg.isFault()) {
resultMsg.setFaultBody(mediator.copyFault(resultMsg.getBody(), sourceOperation, targetOperation));
} else {
if (sourceOperation.getOutputType() != null) {
resultMsg.setBody(mediator.copyOutput(resultMsg.getBody(), sourceOperation, targetOperation));
}
}
}
return resultMsg;
}
}
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