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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.core.databinding.wire;
import java.util.IdentityHashMap;
import java.util.Map;
import org.apache.tuscany.sca.databinding.DataBinding;
import org.apache.tuscany.sca.databinding.DataBindingExtensionPoint;
import org.apache.tuscany.sca.interfacedef.DataType;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.invocation.Interceptor;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.invocation.Message;
public class PassByValueInterceptor implements Interceptor {
private DataBindingExtensionPoint dataBindings;
private Operation operation;
private Invoker nextInvoker;
public PassByValueInterceptor(DataBindingExtensionPoint dataBindings, Operation operation) {
this.dataBindings = dataBindings;
this.operation = operation;
}
public Message invoke(Message msg) {
Object obj = msg.getBody();
msg.setBody(copy((Object[])obj));
Message resultMsg = nextInvoker.invoke(msg);
if (!msg.isFault() && operation.getOutputType() != null) {
String dataBindingId = operation.getOutputType().getDataBinding();
DataBinding dataBinding = dataBindings.getDataBinding(dataBindingId);
resultMsg.setBody(copy(resultMsg.getBody(), dataBinding));
}
return resultMsg;
}
public Object[] copy(Object[] args) {
if (args == null) {
return null;
}
Object[] copiedArgs = new Object[args.length];
Map<Object, Object> map = new IdentityHashMap<Object, Object>();
for (int i = 0; i < args.length; i++) {
if (args[i] == null) {
copiedArgs[i] = null;
} else {
Object copiedArg = map.get(args[i]);
if (copiedArg != null) {
copiedArgs[i] = copiedArg;
} else {
String dataBindingId = operation.getInputType().getLogical().get(i).getDataBinding();
DataBinding dataBinding = dataBindings.getDataBinding(dataBindingId);
copiedArg = copy(args[i], dataBinding);
map.put(args[i], copiedArg);
copiedArgs[i] = copiedArg;
}
}
}
return copiedArgs;
}
public Object copy(Object arg, DataBinding argDataBinding) {
if (arg == null) {
return null;
}
Object copiedArg;
if (argDataBinding != null) {
copiedArg = argDataBinding.copy(arg);
} else {
copiedArg = arg;
DataType<?> dataType = dataBindings.introspectType(arg);
if (dataType != null) {
DataBinding binding = dataBindings.getDataBinding(dataType.getDataBinding());
if (binding != null) {
copiedArg = binding.copy(arg);
}
}
// FIXME: What to do if it's not recognized?
}
return copiedArg;
}
public Invoker getNext() {
return nextInvoker;
}
public void setNext(Invoker next) {
this.nextInvoker = next;
}
}
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