/*
* 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 java.util.Iterator;
import javax.xml.namespace.QName;
import org.apache.axiom.om.OMAttribute;
import org.apache.axiom.om.OMElement;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.synapse.SynapseException;
import org.apache.synapse.util.resolver.ResourceMap;
/**
* Creates a ResourceMap object based on a set of <tt><resource></tt> elements:
* <pre>
* <resource location="..." key="..."/>*
* </pre>
*/
public class ResourceMapFactory {
private static final Log log = LogFactory.getLog(ResourceMapFactory.class);
public static ResourceMap createResourceMap(OMElement elem) {
ResourceMap resourceMap = null;
Iterator it = elem.getChildrenWithName(
new QName(XMLConfigConstants.SYNAPSE_NAMESPACE, "resource"));
while (it.hasNext()) {
// Lazily create the ResourceMap, so that when no <resource>
// elements are found, the method returns null.
if (resourceMap == null) {
resourceMap = new ResourceMap();
}
OMElement resourceElem = (OMElement)it.next();
OMAttribute location = resourceElem.getAttribute
(new QName(XMLConfigConstants.NULL_NAMESPACE, "location"));
if (location == null) {
handleException("The 'location' attribute is required for a resource definition");
}
OMAttribute key = resourceElem.getAttribute(
new QName(XMLConfigConstants.NULL_NAMESPACE, "key"));
if (key == null) {
handleException("The 'key' attribute is required for a resource definition");
}
resourceMap.addResource(location.getAttributeValue(), key.getAttributeValue());
}
return resourceMap;
}
private static void handleException(String msg) {
log.error(msg);
throw new SynapseException(msg);
}
}