/******************************************************************************* | |
* 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.ofbiz.widget.model; | |
import java.io.IOException; | |
import java.net.URL; | |
import java.util.HashMap; | |
import java.util.Map; | |
import javax.xml.parsers.ParserConfigurationException; | |
import org.ofbiz.base.location.FlexibleLocation; | |
import org.ofbiz.base.util.UtilXml; | |
import org.ofbiz.base.util.cache.UtilCache; | |
import org.ofbiz.entity.Delegator; | |
import org.ofbiz.service.LocalDispatcher; | |
import org.w3c.dom.Document; | |
import org.w3c.dom.Element; | |
import org.xml.sax.SAXException; | |
/** | |
* Widget Library - Tree factory class | |
*/ | |
public class TreeFactory { | |
public static final String module = TreeFactory.class.getName(); | |
public static final UtilCache<String, Map<String, ModelTree>> treeLocationCache = UtilCache.createUtilCache("widget.tree.locationResource", 0, 0, false); | |
public static ModelTree getTreeFromLocation(String resourceName, String treeName, Delegator delegator, LocalDispatcher dispatcher) | |
throws IOException, SAXException, ParserConfigurationException { | |
Map<String, ModelTree> modelTreeMap = treeLocationCache.get(resourceName); | |
if (modelTreeMap == null) { | |
synchronized (TreeFactory.class) { | |
modelTreeMap = treeLocationCache.get(resourceName); | |
if (modelTreeMap == null) { | |
ClassLoader loader = Thread.currentThread().getContextClassLoader(); | |
if (loader == null) { | |
loader = TreeFactory.class.getClassLoader(); | |
} | |
URL treeFileUrl = null; | |
treeFileUrl = FlexibleLocation.resolveLocation(resourceName); //, loader); | |
Document treeFileDoc = UtilXml.readXmlDocument(treeFileUrl, true, true); | |
modelTreeMap = readTreeDocument(treeFileDoc, delegator, dispatcher, resourceName); | |
treeLocationCache.put(resourceName, modelTreeMap); | |
} | |
} | |
} | |
ModelTree modelTree = modelTreeMap.get(treeName); | |
if (modelTree == null) { | |
throw new IllegalArgumentException("Could not find tree with name [" + treeName + "] in class resource [" + resourceName + "]"); | |
} | |
return modelTree; | |
} | |
public static Map<String, ModelTree> readTreeDocument(Document treeFileDoc, Delegator delegator, LocalDispatcher dispatcher, String treeLocation) { | |
Map<String, ModelTree> modelTreeMap = new HashMap<String, ModelTree>(); | |
if (treeFileDoc != null) { | |
// read document and construct ModelTree for each tree element | |
Element rootElement = treeFileDoc.getDocumentElement(); | |
for (Element treeElement: UtilXml.childElementList(rootElement, "tree")) { | |
ModelTree modelTree = new ModelTree(treeElement, treeLocation); | |
modelTreeMap.put(modelTree.getName(), modelTree); | |
} | |
} | |
return modelTreeMap; | |
} | |
} |