/*
* 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.config.xml;
import org.apache.axiom.om.OMElement;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.synapse.SynapseException;
import org.apache.synapse.Mediator;
import org.apache.synapse.mediators.transform.HeaderMediator;
import javax.xml.namespace.QName;
/**
* Set header
* <pre>
* <header name="qname" (value="literal" | expression="xpath")/>
* </pre>
*
* Remove header
* <pre>
* <header name="qname" action="remove"/>
* </pre>
*/
public class HeaderMediatorSerializer extends BaseMediatorSerializer
implements MediatorSerializer {
private static final Log log = LogFactory.getLog(FilterMediatorSerializer.class);
public OMElement serializeMediator(OMElement parent, Mediator m) {
if (!(m instanceof HeaderMediator)) {
handleException("Unsupported mediator passed in for serialization : " + m.getType());
}
HeaderMediator mediator = (HeaderMediator) m;
OMElement header = fac.createOMElement("header", synNS);
QName qName = mediator.getQName();
if (qName != null) {
if (qName.getNamespaceURI() != null) {
header.addAttribute(fac.createOMAttribute(
"name", nullNS,
(qName.getPrefix() != null && !"".equals(qName.getPrefix())
? qName.getPrefix() + ":" : "") +
qName.getLocalPart()));
header.declareNamespace(qName.getNamespaceURI(), qName.getPrefix());
} else {
header.addAttribute(fac.createOMAttribute(
"name", nullNS, qName.getLocalPart()));
}
}
if (mediator.getAction() == HeaderMediator.ACTION_REMOVE) {
header.addAttribute(fac.createOMAttribute(
"action", nullNS, "remove"));
} else {
if (mediator.getValue() != null) {
header.addAttribute(fac.createOMAttribute(
"value", nullNS, mediator.getValue()));
} else if (mediator.getExpression() != null) {
header.addAttribute(fac.createOMAttribute(
"expression", nullNS, mediator.getExpression().toString()));
super.serializeNamespaces(header, mediator.getExpression());
} else {
handleException("Value or expression required for a set header mediator");
}
}
if (parent != null) {
parent.addChild(header);
}
return header;
}
public String getMediatorClassName() {
return HeaderMediator.class.getName();
}
private void handleException(String msg) {
log.error(msg);
throw new SynapseException(msg);
}
}