/*
* 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.axiom.om.util.AXIOMUtil;
import org.apache.synapse.Mediator;
import org.apache.synapse.mediators.transform.Argument;
import org.apache.synapse.mediators.transform.PayloadFactoryMediator;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import java.util.List;
public class PayloadFactoryMediatorSerializer extends AbstractMediatorSerializer {
private static final String PAYLOAD_FACTORY = "payloadFactory";
private static final String FORMAT = "format";
private static final String ARGS = "args";
private static final String ARG = "arg";
private static final String VALUE = "value";
private static final String EXPRESSION = "expression";
private static final String EVALUATOR = "evaluator";
private final String JSON_TYPE="json";
private final String MEDIA_TYPE="media-type";
private final String XML = "xml";
private final String JSON = "json";
private final String TEXT = "text";
private final String DEEP_CHECK = "deepCheck";
private final String LITERAL = "literal";
private String getEvaluator(String pathType) {
if(pathType == SynapsePath.JSON_PATH) {
return JSON;
} else {
return XML;
}
}
public OMElement serializeSpecificMediator(Mediator m) {
if (!(m instanceof PayloadFactoryMediator)) {
handleException("Unsupported mediator passed in for serialization : " + m.getType());
return null;
}
PayloadFactoryMediator mediator = (PayloadFactoryMediator) m;
OMElement payloadFactoryElem = fac.createOMElement(PAYLOAD_FACTORY, synNS);
if(mediator.getType()!=null){
payloadFactoryElem.addAttribute(fac.createOMAttribute(MEDIA_TYPE,null,mediator.getType()));
}
saveTracingState(payloadFactoryElem, mediator);
if(!mediator.isFormatDynamic()){
if (mediator.getFormat() != null) {
try {
OMElement formatElem = fac.createOMElement(FORMAT, synNS);
String type = mediator.getType();
if(type!=null && (type.contains(JSON_TYPE) || type.contains(TEXT))) {
formatElem.setText(mediator.getFormat());
} else{
formatElem.addChild(AXIOMUtil.stringToOM(mediator.getFormat()));
}
payloadFactoryElem.addChild(formatElem);
} catch (XMLStreamException e) {
handleException("Error while serializing payloadFactory mediator", e);
}
} else {
handleException("Invalid payloadFactory mediator, format is required");
}
} else {
// Serialize Value using ValueSerializer
OMElement formatElem = fac.createOMElement(FORMAT, synNS);
formatElem.addAttribute(fac.createOMAttribute(
"key", nullNS, mediator.getFormatKey().getKeyValue()));
ValueSerializer keySerializer = new ValueSerializer();
keySerializer.serializeValue(mediator.getFormatKey(), XMLConfigConstants.KEY, formatElem);
payloadFactoryElem.addChild(formatElem);
}
OMElement argumentsElem = fac.createOMElement(ARGS, synNS);
List<Argument> pathArgList = mediator.getPathArgumentList();
if (null != pathArgList && pathArgList.size() > 0) {
for (Argument arg : pathArgList) {
if(arg.getExpression() == null && arg.getValue() == null) {
continue;
}
OMElement argElem = fac.createOMElement(ARG, synNS);
if (!arg.isDeepCheck()) { //add deepcheck attribute only it is false. (because default value is true)
argElem.addAttribute(fac.createOMAttribute(DEEP_CHECK, nullNS, "false"));
}
if (arg.isLiteral()) { //add literal attribute only it is true. (because default value is false)
argElem.addAttribute(fac.createOMAttribute(LITERAL, nullNS, "true"));
}
if(null != arg.getExpression() && null != arg.getExpression().getPathType()) {
argElem.addAttribute(fac.createOMAttribute(EVALUATOR, nullNS, getEvaluator(arg.getExpression().getPathType())));
} else if(null == arg.getExpression() && arg.getValue() != null) {
argElem.addAttribute(fac.createOMAttribute(VALUE, nullNS, arg.getValue()));
} else {
argElem.addAttribute(fac.createOMAttribute(EVALUATOR, nullNS, getEvaluator(SynapsePath.X_PATH)));
}
if (null != arg.getExpression()) {
SynapsePathSerializer.serializePath(arg.getExpression(), argElem, EXPRESSION);
// We don't want the "json-eval(" prefix in PayloadFactory, for backward compatibility and since
// PF has evaluator attribute.
QName EXPR_Q = new QName(EXPRESSION);
String strExpr = argElem.getAttribute(EXPR_Q).getAttributeValue();
if (strExpr.startsWith("json-eval(")) {
argElem.getAttribute(EXPR_Q).setAttributeValue(strExpr.substring(10, strExpr.length()-1));
}
}
argumentsElem.addChild(argElem);
}
}
payloadFactoryElem.addChild(argumentsElem);
return payloadFactoryElem;
}
public String getMediatorClassName() {
return PayloadFactoryMediator.class.getName();
}
}