| /******************************************************************************* |
| * 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.entity.cache; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentMap; |
| |
| import org.ofbiz.base.util.Debug; |
| import org.ofbiz.entity.GenericValue; |
| import org.ofbiz.entity.condition.EntityCondition; |
| import org.ofbiz.entity.model.ModelEntity; |
| import org.ofbiz.entity.util.EntityUtil; |
| |
| public class EntityListCache extends AbstractEntityConditionCache<Object, List<GenericValue>> { |
| |
| public static final String module = EntityListCache.class.getName(); |
| |
| public EntityListCache(String delegatorName) { |
| super(delegatorName, "entity-list"); |
| } |
| |
| public List<GenericValue> get(String entityName, EntityCondition condition) { |
| return this.get(entityName, condition, null); |
| } |
| |
| public List<GenericValue> get(String entityName, EntityCondition condition, List<String> orderBy) { |
| ConcurrentMap<Object, List<GenericValue>> conditionCache = getConditionCache(entityName, condition); |
| if (conditionCache == null) return null; |
| Object orderByKey = getOrderByKey(orderBy); |
| List<GenericValue> valueList = conditionCache.get(orderByKey); |
| if (valueList == null) { |
| // the valueList was not found for the given ordering, so grab the first one and order it in memory |
| Iterator<List<GenericValue>> it = conditionCache.values().iterator(); |
| if (it.hasNext()) valueList = it.next(); |
| |
| if (valueList != null) { |
| // Does not need to be synchronized; if 2 threads do the same ordering, |
| // the result will be exactly the same, and won't actually cause any |
| // incorrect results. |
| valueList = EntityUtil.orderBy(valueList, orderBy); |
| conditionCache.put(orderByKey, valueList); |
| } |
| } |
| return valueList; |
| } |
| |
| public void put(String entityName, EntityCondition condition, List<GenericValue> entities) { |
| this.put(entityName, condition, null, entities); |
| } |
| |
| public List<GenericValue> put(String entityName, EntityCondition condition, List<String> orderBy, List<GenericValue> entities) { |
| ModelEntity entity = this.getDelegator().getModelEntity(entityName); |
| if (entity.getNeverCache()) { |
| Debug.logWarning("Tried to put a value of the " + entityName + " entity in the cache but this entity has never-cache set to true, not caching.", module); |
| return null; |
| } |
| for (GenericValue memberValue : entities) { |
| memberValue.setImmutable(); |
| } |
| Map<Object, List<GenericValue>> conditionCache = getOrCreateConditionCache(entityName, getFrozenConditionKey(condition)); |
| return conditionCache.put(getOrderByKey(orderBy), entities); |
| } |
| |
| public List<GenericValue> remove(String entityName, EntityCondition condition, List<String> orderBy) { |
| return super.remove(entityName, condition, getOrderByKey(orderBy)); |
| } |
| |
| public static final Object getOrderByKey(List<String> orderBy) { |
| return orderBy != null ? (Object) orderBy : "{null}"; |
| } |
| } |