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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.policy.transaction;
import org.apache.tuscany.sca.invocation.Interceptor;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.invocation.Message;
/**
* @version $Rev$ $Date$
*/
public class TransactionInterceptor implements Interceptor {
private Invoker next;
private TransactionManagerHelper helper;
private boolean outbound;
private TransactionPolicy interactionPolicy;
private TransactionPolicy implementationPolicy;
public TransactionInterceptor(TransactionManagerHelper helper,
boolean outbound,
TransactionPolicy interactionPolicy,
TransactionPolicy implementationPolicy) {
super();
this.helper = helper;
this.outbound = outbound;
this.interactionPolicy = interactionPolicy;
this.implementationPolicy = implementationPolicy;
}
/**
* @see org.apache.tuscany.sca.invocation.Interceptor#getNext()
*/
public Invoker getNext() {
return next;
}
/**
* @see org.apache.tuscany.sca.invocation.Interceptor#setNext(org.apache.tuscany.sca.invocation.Invoker)
*/
public void setNext(Invoker next) {
this.next = next;
}
/**
* @see org.apache.tuscany.sca.invocation.Invoker#invoke(org.apache.tuscany.sca.invocation.Message)
*/
public Message invoke(Message msg) {
TransactionalInvocation invocation = new TransactionalInvocation(next, msg);
Message result = null;
if (msg.getOperation().isNonBlocking()) {
}
TransactionIntent interactionIntent = TransactionIntent.propagatesTransacton;
if (interactionPolicy != null) {
if (interactionPolicy.getAction() == TransactionPolicy.Action.PROPAGATE) {
interactionIntent = TransactionIntent.propagatesTransacton;
} else {
interactionIntent = TransactionIntent.suspendsTransaction;
}
}
TransactionIntent implementationIntent = TransactionIntent.managedTransactionGlobal;
if (implementationPolicy != null) {
switch (implementationPolicy.getAction()) {
case REQUIRE_GLOBAL:
implementationIntent = TransactionIntent.managedTransactionGlobal;
break;
case REQUIRE_LOCAL:
implementationIntent = TransactionIntent.managedTransactionLocal;
break;
default:
implementationIntent = TransactionIntent.noManagedTransaction;
break;
}
}
try {
if (outbound) {
result = helper.handlesOutbound(interactionIntent, implementationIntent, invocation);
} else {
result = helper.handlesInbound(interactionIntent, implementationIntent, invocation);
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return result;
}
private static class TransactionalInvocation implements TransactionalAction<Message> {
private final Invoker invoker;
private final Message message;
public TransactionalInvocation(Invoker invoker, Message message) {
super();
this.invoker = invoker;
this.message = message;
}
public Message run() throws Exception {
return invoker.invoke(message);
}
}
}
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