org.apache.cxf.transport.AbstractObservable Maven / Gradle / Ivy
/**
* 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.cxf.transport;
import java.util.logging.Logger;
import org.apache.cxf.Bus;
import org.apache.cxf.service.model.EndpointInfo;
import org.apache.cxf.ws.addressing.AttributedURIType;
import org.apache.cxf.ws.addressing.EndpointReferenceType;
import org.apache.cxf.wsdl.EndpointReferenceUtils;
public abstract class AbstractObservable implements Observable {
protected MessageObserver incomingObserver;
/**
* Register a message observer for incoming messages.
*
* @param observer the observer to notify on receipt of incoming
* message
*/
public synchronized void setMessageObserver(MessageObserver observer) {
if (observer != incomingObserver) {
MessageObserver old = incomingObserver;
// the observer switch must take place before activation or after deactivation
if (observer != null) {
incomingObserver = observer;
getLogger().fine("registering incoming observer: " + observer);
if (old == null) {
try {
activate();
} catch (RuntimeException ex) {
incomingObserver = null;
throw ex;
}
}
} else {
if (old != null) {
getLogger().fine("unregistering incoming observer: " + old);
deactivate();
}
incomingObserver = observer;
}
}
}
/**
* @return the observer to notify on receipt of incoming message
*/
public MessageObserver getMessageObserver() {
return incomingObserver;
}
/**
* Get the target reference .
*
* @param ei the corresponding EndpointInfo
* @return the actual target
*/
protected static EndpointReferenceType getTargetReference(EndpointInfo ei, Bus bus) {
return getTargetReference(ei, null, bus);
}
/**
* Get the target endpoint reference.
*
* @param ei the corresponding EndpointInfo
* @param t the given target EPR if available
* @param bus the Bus
* @return the actual target
*/
protected static EndpointReferenceType getTargetReference(EndpointInfo ei,
EndpointReferenceType t,
Bus bus) {
EndpointReferenceType ref = null;
if (null == t) {
ref = new EndpointReferenceType();
AttributedURIType address = new AttributedURIType();
address.setValue(ei.getAddress());
ref.setAddress(address);
if (ei.getService() != null) {
EndpointReferenceUtils.setServiceAndPortName(ref,
ei.getService().getName(),
ei.getName().getLocalPart());
}
} else {
ref = t;
}
return ref;
}
/**
* Activate messages flow.
*/
protected void activate() {
// nothing to do by default
}
/**
* Deactivate messages flow.
*/
protected void deactivate() {
// nothing to do by default
}
/**
* @return the logger to use
*/
protected abstract Logger getLogger();
}