/*
* 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.eip.aggregator.AggregateMediator;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Serializer for {@link AggregateMediator} instances.
*
* <pre>
* <aggregate>
* <correlateOn expression="xpath"/>?
* <completeCondition [timeout="time-in-seconds"]>
* <messageCount min="int-min" max="int-max"/>?
* </completeCondition>?
* <onComplete expression="xpath" [sequence="sequence-ref"]>
* (mediator +)?
* </onComplete>
* </aggregate>
* </pre>
*/
public class AggregateMediatorSerializer extends AbstractMediatorSerializer {
private static final Log log = LogFactory.getLog(AggregateMediatorSerializer.class);
public OMElement serializeMediator(OMElement parent, Mediator m) {
if (!(m instanceof AggregateMediator)) {
handleException("Unsupported mediator passed in for serialization : " + m.getType());
}
AggregateMediator mediator = (AggregateMediator) m;
OMElement aggregator = fac.createOMElement("aggregate", synNS);
saveTracingState(aggregator, mediator);
if (mediator.getCorrelateExpression() != null) {
OMElement corelateOn = fac.createOMElement("correlateOn", synNS);
SynapseXPathSerializer.serializeXPath(
mediator.getCorrelateExpression(), corelateOn, "expression");
aggregator.addChild(corelateOn);
}
OMElement completeCond = fac.createOMElement("completeCondition", synNS);
if (mediator.getCompletionTimeoutMillis() != 0) {
completeCond.addAttribute("timeout", Long.toString(mediator.getCompletionTimeoutMillis() / 1000), nullNS);
}
OMElement messageCount = fac.createOMElement("messageCount", synNS);
if (mediator.getMinMessagesToComplete() != 0) {
messageCount.addAttribute("min", Integer.toString(mediator.getMinMessagesToComplete()), nullNS);
}
if (mediator.getMaxMessagesToComplete() != 0) {
messageCount.addAttribute("max", Integer.toString(mediator.getMaxMessagesToComplete()), nullNS);
}
completeCond.addChild(messageCount);
aggregator.addChild(completeCond);
OMElement onCompleteElem = fac.createOMElement("onComplete", synNS);
if (mediator.getAggregationExpression() != null) {
SynapseXPathSerializer.serializeXPath(
mediator.getAggregationExpression(), onCompleteElem, "expression");
}
if (mediator.getOnCompleteSequenceRef() != null) {
onCompleteElem.addAttribute("sequence", mediator.getOnCompleteSequenceRef(), nullNS);
} else if (mediator.getOnCompleteSequence() != null) {
new SequenceMediatorSerializer().serializeChildren(
onCompleteElem, mediator.getOnCompleteSequence().getList());
}
aggregator.addChild(onCompleteElem);
if (parent != null) {
parent.addChild(aggregator);
}
return aggregator;
}
public String getMediatorClassName() {
return AggregateMediator.class.getName();
}
}