org.activiti.engine.impl.persistence.cache.EntityCacheImpl Maven / Gradle / Ivy
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/* Licensed 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.activiti.engine.impl.persistence.cache;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.activiti.engine.impl.persistence.entity.Entity;
/**
*/
public class EntityCacheImpl implements EntityCache {
protected Map, Map> cachedObjects = new HashMap, Map>();
@Override
public CachedEntity put(Entity entity, boolean storeState) {
Map classCache = cachedObjects.get(entity.getClass());
if (classCache == null) {
classCache = new HashMap();
cachedObjects.put(entity.getClass(), classCache);
}
CachedEntity cachedObject = new CachedEntity(entity, storeState);
classCache.put(entity.getId(), cachedObject);
return cachedObject;
}
@Override
@SuppressWarnings("unchecked")
public T findInCache(Class entityClass, String id) {
CachedEntity cachedObject = null;
Map classCache = cachedObjects.get(entityClass);
if (classCache == null) {
classCache = findClassCacheByCheckingSubclasses(entityClass);
}
if (classCache != null) {
cachedObject = classCache.get(id);
}
if (cachedObject != null) {
return (T) cachedObject.getEntity();
}
return null;
}
protected Map findClassCacheByCheckingSubclasses(Class> entityClass) {
for (Class> clazz : cachedObjects.keySet()) {
if (entityClass.isAssignableFrom(clazz)) {
return cachedObjects.get(clazz);
}
}
return null;
}
@Override
public void cacheRemove(Class> entityClass, String entityId) {
Map classCache = cachedObjects.get(entityClass);
if (classCache == null) {
return;
}
classCache.remove(entityId);
}
@Override
public Collection findInCacheAsCachedObjects(Class entityClass) {
Map classCache = cachedObjects.get(entityClass);
if (classCache != null) {
return classCache.values();
}
return null;
}
@Override
@SuppressWarnings("unchecked")
public List findInCache(Class entityClass) {
Map classCache = cachedObjects.get(entityClass);
if (classCache == null) {
classCache = findClassCacheByCheckingSubclasses(entityClass);
}
if (classCache != null) {
List entities = new ArrayList(classCache.size());
for (CachedEntity cachedObject : classCache.values()) {
entities.add((T) cachedObject.getEntity());
}
return entities;
}
return Collections.emptyList();
}
public Map, Map> getAllCachedEntities() {
return cachedObjects;
}
@Override
public void close() {
}
@Override
public void flush() {
}
}
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