/*
* 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.synapse.mediators;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.synapse.MessageContext;
import org.apache.synapse.Constants;
import org.jaxen.Context;
import org.jaxen.Function;
import org.jaxen.FunctionCallException;
import org.jaxen.Navigator;
import org.jaxen.function.StringFunction;
import java.util.Iterator;
import java.util.List;
/**
* Implements the XPath extension function synapse:get-property(prop-name)
*/
public class GetPropertyFunction implements Function {
private static final Log log = LogFactory.getLog(GetPropertyFunction.class);
private MessageContext synCtx = null;
public MessageContext getSynCtx() {
return synCtx;
}
public void setSynCtx(MessageContext synCtx) {
this.synCtx = synCtx;
}
public Object call(Context context, List args) throws FunctionCallException {
if (args.isEmpty()) {
log.warn("Property key value for lookup was not specified");
return null;
} else if (synCtx == null) {
log.warn("Synapse context has not been set for the XPath extension function" +
"'synapse:get-property(prop-name)'");
return null;
} else {
Navigator navigator = context.getNavigator();
Iterator iter = args.iterator();
while (iter.hasNext()) {
String key = StringFunction.evaluate(iter.next(), navigator);
// ignore if more than one argument has been specified
Object result = synCtx.getProperty(key);
if (result != null) {
return result;
} else {
if (Constants.HEADER_TO.equals(key) && synCtx.getTo() != null) {
return synCtx.getTo().getAddress();
} else if (Constants.HEADER_FROM.equals(key) && synCtx.getFrom() != null) {
return synCtx.getFrom().getAddress();
} else if (Constants.HEADER_ACTION.equals(key) && synCtx.getWSAAction() != null) {
return synCtx.getWSAAction();
} else if (Constants.HEADER_FAULT.equals(key) && synCtx.getFaultTo() != null) {
return synCtx.getFaultTo().getAddress();
} else if (Constants.HEADER_REPLY_TO.equals(key) && synCtx.getReplyTo() != null) {
return synCtx.getReplyTo().getAddress();
} else {
return null;
}
}
}
}
return null;
}
}