/*
* 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.synapse.Mediator;
import org.apache.synapse.mediators.filters.FilterMediator;
/**
* <pre>
* <filter (source="xpath" regex="string") | xpath="xpath">
* mediator+
* </filter>
* </pre>
*
* <p>or if the filter medaitor needs to support the else behavior as well (i.e. a set of mediators
* to be executed when the filter evaluates to false).</p>
*
* <pre>
* <filter (source="xpath" regex="string") | xpath="xpath">
* <then [sequence="string"]>
* mediator+
* </then>
* <else [sequence="string"]>
* mediator+
* </else>
* </filter>
* </pre>
*/
public class FilterMediatorSerializer extends AbstractListMediatorSerializer {
protected OMElement serializeSpecificMediator(Mediator m) {
if (!(m instanceof FilterMediator)) {
handleException("Unsupported mediator passed in for serialization : " + m.getType());
}
FilterMediator mediator = (FilterMediator) m;
OMElement filter = fac.createOMElement("filter", synNS);
if (mediator.getSource() != null && mediator.getRegex() != null) {
SynapseXPathSerializer.serializeXPath(mediator.getSource(), filter, "source");
filter.addAttribute(fac.createOMAttribute(
"regex", nullNS, mediator.getRegex().pattern()));
} else if (mediator.getXpath() != null) {
SynapseXPathSerializer.serializeXPath(mediator.getXpath(), filter, "xpath");
} else {
handleException("Invalid filter mediator. " +
"Should have either a 'source' and a 'regex' OR an 'xpath' ");
}
saveTracingState(filter, mediator);
if (mediator.isThenElementPresent()) {
OMElement thenElem = fac.createOMElement("then", synNS);
filter.addChild(thenElem);
if (mediator.getThenKey() != null) {
thenElem.addAttribute(
fac.createOMAttribute("sequence", nullNS, mediator.getThenKey()));
} else {
serializeChildren(thenElem, mediator.getList());
}
if (mediator.getElseMediator() != null || mediator.getElseKey() != null) {
OMElement elseElem = fac.createOMElement("else", synNS);
filter.addChild(elseElem);
if (mediator.getElseKey() != null) {
elseElem.addAttribute(
fac.createOMAttribute("sequence", nullNS, mediator.getElseKey()));
} else {
serializeChildren(elseElem, mediator.getElseMediator().getList());
}
}
} else {
serializeChildren(filter, mediator.getList());
}
return filter;
}
public String getMediatorClassName() {
return FilterMediator.class.getName();
}
}