/*
* 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.OMAttribute;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.xpath.AXIOMXPath;
import org.apache.synapse.config.xml.OMElementUtils;
import org.apache.synapse.Mediator;
import org.apache.synapse.mediators.transform.XSLTMediator;
import org.apache.synapse.config.xml.XMLConfigConstants;
import org.apache.synapse.config.xml.AbstractMediatorFactory;
import org.apache.synapse.config.xml.MediatorPropertyFactory;
import org.jaxen.JaxenException;
import javax.xml.namespace.QName;
import java.util.Iterator;
/**
* Creates a XSLT mediator from the given XML
*
* <pre>
* <xslt key="property-key" [source="xpath"] [target="string"]>
* <property name="string" (value="literal" | expression="xpath")/>*
* <feature name="string" value="true| false" />*
* </transform>
* </pre>
*/
public class XSLTMediatorFactory extends AbstractMediatorFactory {
private static final QName TAG_NAME = new QName(XMLConfigConstants.SYNAPSE_NAMESPACE, "xslt");
public QName getTagQName() {
return TAG_NAME;
}
public Mediator createMediator(OMElement elem) {
XSLTMediator transformMediator = new XSLTMediator();
OMAttribute attXslt = elem.getAttribute(ATT_KEY);
OMAttribute attSource = elem.getAttribute(ATT_SOURCE);
OMAttribute attTarget = elem.getAttribute(ATT_TARGET);
if (attXslt != null) {
transformMediator.setXsltKey(attXslt.getAttributeValue());
} else {
handleException("The 'key' attribute is required for the XSLT mediator");
}
if (attSource != null) {
try {
transformMediator.setSourceXPathString(attSource.getAttributeValue());
AXIOMXPath xp = new AXIOMXPath(attSource.getAttributeValue());
OMElementUtils.addNameSpaces(xp, elem, log);
transformMediator.setSource(xp);
} catch (JaxenException e) {
handleException("Invalid XPath specified for the source attribute : " +
attSource.getAttributeValue());
}
}
if (attTarget != null) {
transformMediator.setTargetPropertyName(attTarget.getAttributeValue());
}
// after successfully creating the mediator
// set its common attributes such as tracing etc
processTraceState(transformMediator, elem);
// set the features
Iterator iter = elem.getChildrenWithName(FEATURE_Q);
while (iter.hasNext()) {
OMElement featureElem = (OMElement) iter.next();
OMAttribute attName = featureElem.getAttribute(ATT_NAME);
OMAttribute attValue = featureElem.getAttribute(ATT_VALUE);
if (attName != null && attValue != null) {
String name = attName.getAttributeValue();
String value = attValue.getAttributeValue();
if (name != null && value != null) {
if ("true".equals(value.trim())) {
transformMediator.addFeature(name.trim(),
true);
} else if ("false".equals(value.trim())) {
transformMediator.addFeature(name.trim(),
false);
} else {
handleException("The feature must have value true or false");
}
} else {
handleException("The valid values for both of the name and value are need");
}
} else {
handleException("Both of the name and value attribute are required for a feature");
}
}
transformMediator.addAllProperties(
MediatorPropertyFactory.getMediatorProperties(elem));
return transformMediator;
}
}