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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.invocation;
import org.apache.tuscany.sca.invocation.Interceptor;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.invocation.Message;
import org.apache.tuscany.sca.runtime.ReferenceParameters;
import org.osoa.sca.NoRegisteredCallbackException;
/**
* An interceptor applied to the forward direction of a wire that ensures the callback target implements the required
* service contract. This is required as callback targets may be set dynamically by service implementations.
*
* @version $Rev$ $Date$
*/
public class CallbackInterfaceInterceptor implements Interceptor {
private Invoker next;
public CallbackInterfaceInterceptor() {
}
public Message invoke(Message msg) {
ReferenceParameters parameters = msg.getFrom().getReferenceParameters();
if (parameters.getCallbackObjectID() != null || parameters.getCallbackReference() != msg.getFrom()
.getCallbackEndpoint()) {
return next.invoke(msg);
} else {
throw new NoRegisteredCallbackException("Callback target does not implement the callback interface");
}
}
public void setNext(Invoker next) {
this.next = next;
}
public Invoker getNext() {
return next;
}
}
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