/*******************************************************************************
* 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.entityext.eca;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import javolution.util.FastList;
import javolution.util.FastMap;
import org.ofbiz.base.component.ComponentConfig;
import org.ofbiz.base.config.GenericConfigException;
import org.ofbiz.base.config.MainResourceHandler;
import org.ofbiz.base.config.ResourceHandler;
import org.ofbiz.base.util.Debug;
import org.ofbiz.base.util.UtilXml;
import org.ofbiz.base.util.cache.UtilCache;
import org.ofbiz.entity.Delegator;
import org.ofbiz.entity.config.DelegatorInfo;
import org.ofbiz.entity.config.EntityConfigUtil;
import org.ofbiz.entity.config.EntityEcaReaderInfo;
import org.w3c.dom.Element;
/**
* EntityEcaUtil
*/
public class EntityEcaUtil {
public static final String module = EntityEcaUtil.class.getName();
public static UtilCache<String, Map<String, Map<String, List<EntityEcaRule>>>> entityEcaReaders = UtilCache.createUtilCache("entity.EcaReaders", 0, 0, false);
public static Map<String, Map<String, List<EntityEcaRule>>> getEntityEcaCache(String entityEcaReaderName) {
Map<String, Map<String, List<EntityEcaRule>>> ecaCache = entityEcaReaders.get(entityEcaReaderName);
if (ecaCache == null) {
synchronized (EntityEcaUtil.class) {
ecaCache = entityEcaReaders.get(entityEcaReaderName);
if (ecaCache == null) {
ecaCache = FastMap.newInstance();
readConfig(entityEcaReaderName, ecaCache);
entityEcaReaders.put(entityEcaReaderName, ecaCache);
}
}
}
return ecaCache;
}
public static String getEntityEcaReaderName(String delegatorName) {
DelegatorInfo delegatorInfo = EntityConfigUtil.getDelegatorInfo(delegatorName);
if (delegatorInfo == null) {
Debug.logError("BAD ERROR: Could not find delegator config with name: " + delegatorName, module);
return null;
}
return delegatorInfo.entityEcaReader;
}
protected static void readConfig(String entityEcaReaderName, Map<String, Map<String, List<EntityEcaRule>>> ecaCache) {
EntityEcaReaderInfo entityEcaReaderInfo = EntityConfigUtil.getEntityEcaReaderInfo(entityEcaReaderName);
if (entityEcaReaderInfo == null) {
Debug.logError("BAD ERROR: Could not find entity-eca-reader config with name: " + entityEcaReaderName, module);
return;
}
for (Element eecaResourceElement: entityEcaReaderInfo.resourceElements) {
ResourceHandler handler = new MainResourceHandler(EntityConfigUtil.ENTITY_ENGINE_XML_FILENAME, eecaResourceElement);
addEcaDefinitions(handler, ecaCache);
}
// get all of the component resource eca stuff, ie specified in each ofbiz-component.xml file
for (ComponentConfig.EntityResourceInfo componentResourceInfo: ComponentConfig.getAllEntityResourceInfos("eca")) {
if (entityEcaReaderName.equals(componentResourceInfo.readerName)) {
addEcaDefinitions(componentResourceInfo.createResourceHandler(), ecaCache);
}
}
}
protected static void addEcaDefinitions(ResourceHandler handler, Map<String, Map<String, List<EntityEcaRule>>> ecaCache) {
Element rootElement = null;
try {
rootElement = handler.getDocument().getDocumentElement();
} catch (GenericConfigException e) {
Debug.logError(e, module);
return;
}
int numDefs = 0;
for (Element e: UtilXml.childElementList(rootElement, "eca")) {
String entityName = e.getAttribute("entity");
String eventName = e.getAttribute("event");
Map<String, List<EntityEcaRule>> eventMap = ecaCache.get(entityName);
List<EntityEcaRule> rules = null;
if (eventMap == null) {
eventMap = FastMap.newInstance();
rules = FastList.newInstance();
ecaCache.put(entityName, eventMap);
eventMap.put(eventName, rules);
} else {
rules = eventMap.get(eventName);
if (rules == null) {
rules = FastList.newInstance();
eventMap.put(eventName, rules);
}
}
rules.add(new EntityEcaRule(e));
numDefs++;
}
try {
Debug.logImportant("Loaded [" + numDefs + "] Entity ECA definitions from " + handler.getFullLocation() + " in loader " + handler.getLoaderName(), module);
} catch (GenericConfigException e) {
Debug.logError(e, module);
return;
}
}
public static Collection<EntityEcaRule> getEntityEcaRules(Delegator delegator, String entityName, String event) {
Map<String, Map<String, List<EntityEcaRule>>> ecaCache = EntityEcaUtil.getEntityEcaCache(EntityEcaUtil.getEntityEcaReaderName(delegator.getDelegatorName()));
Map<String, List<EntityEcaRule>> eventMap = ecaCache.get(entityName);
if (eventMap != null) {
if (event != null) {
return eventMap.get(event);
}
}
return null;
}
}