/*
* 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.mediators.transform;
import org.apache.axiom.om.OMAttribute;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.xpath.AXIOMXPath;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.synapse.SynapseException;
import org.apache.synapse.config.xml.OMElementUtils;
import org.apache.synapse.Mediator;
import org.apache.synapse.config.xml.Constants;
import org.apache.synapse.config.xml.MediatorFactory;
import org.apache.synapse.config.xml.MediatorPropertyFactory;
import org.jaxen.JaxenException;
import javax.xml.namespace.QName;
/**
* Creates a XSLT mediator from the given XML
*
* <pre>
* <xslt key="property-key" [source="xpath"]>
* <property name="string" (value="literal" | expression="xpath")/>*
* </transform>
* </pre>
*/
public class XSLTMediatorFactory implements MediatorFactory {
private static final Log log = LogFactory.getLog(XSLTMediatorFactory.class);
private static final QName TAG_NAME = new QName(Constants.SYNAPSE_NAMESPACE, "xslt");
public QName getTagQName() {
return TAG_NAME;
}
public Mediator createMediator(OMElement elem) {
XSLTMediator transformMediator = new XSLTMediator();
OMAttribute attXslt = elem.getAttribute(new QName(Constants.NULL_NAMESPACE, "key"));
OMAttribute attSource = elem.getAttribute(new QName(Constants.NULL_NAMESPACE, "source"));
if (attXslt != null) {
transformMediator.setXsltKey(attXslt.getAttributeValue());
} else {
handleException("The 'key' attribute is required for the XSLT mediator");
}
if (attSource != null) {
try {
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());
}
}
transformMediator.addAllProperties(
MediatorPropertyFactory.getMediatorProperties(elem));
return transformMediator;
}
private void handleException(String msg, Exception e) {
log.error(msg, e);
throw new SynapseException(msg, e);
}
private void handleException(String msg) {
log.error(msg);
throw new SynapseException(msg);
}
}