/*
* Copyright (c) 2008-2013, Hazelcast, Inc. All Rights Reserved.
*
* 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 com.hazelcast.map;
import com.hazelcast.core.MapLoader;
import com.hazelcast.core.MapLoaderLifecycleSupport;
import com.hazelcast.core.MapStore;
import com.hazelcast.core.PostProcessingMapStore;
import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.atomic.AtomicBoolean;
@SuppressWarnings("unchecked")
public class MapStoreWrapper implements MapStore {
private final MapLoader mapLoader;
private final MapStore mapStore;
private final Object impl;
private final String mapName;
private final AtomicBoolean enabled = new AtomicBoolean(false);
public MapStoreWrapper(Object impl, String mapName, boolean enabled) {
this.impl = impl;
this.mapName = mapName;
MapLoader loader = null;
MapStore store = null;
if (impl instanceof MapStore) {
store = (MapStore) impl;
}
if (impl instanceof MapLoader) {
loader = (MapLoader) impl;
}
this.mapLoader = loader;
this.mapStore = store;
this.enabled.set(enabled);
}
public MapStore getMapStore() {
return mapStore;
}
public void enable() {
enabled.set(true);
}
public void disable() {
enabled.set(false);
}
public boolean isEnabled() {
return enabled.get();
}
public void destroy() {
if (impl instanceof MapLoaderLifecycleSupport) {
((MapLoaderLifecycleSupport) impl).destroy();
}
}
private boolean isMapStore() {
return (mapStore != null);
}
private boolean isMapLoader() {
return (mapLoader != null);
}
public void delete(Object key) {
if (isMapStore() && enabled.get()) {
mapStore.delete(key);
}
}
public void store(Object key, Object value) {
if (isMapStore() && enabled.get()) {
mapStore.store(key, value);
}
}
public void storeAll(Map map) {
if (isMapStore() && enabled.get()) {
mapStore.storeAll(map);
}
}
public void deleteAll(Collection keys) {
if (keys == null || keys.isEmpty()) {
return;
}
if (isMapStore() && enabled.get()) {
mapStore.deleteAll(keys);
}
}
public Set loadAllKeys() {
if (isMapLoader() && enabled.get()) {
return mapLoader.loadAllKeys();
}
return null;
}
public Object load(Object key) {
if (isMapLoader() && enabled.get()) {
return mapLoader.load(key);
}
return null;
}
public Map loadAll(Collection keys) {
if (keys == null || keys.isEmpty()) {
return Collections.EMPTY_MAP;
}
if (isMapLoader() && enabled.get()) {
return mapLoader.loadAll(keys);
}
return null;
}
public Object getImpl() {
return impl;
}
public boolean isPostProcessingMapStore() {
return isMapStore() && mapStore instanceof PostProcessingMapStore;
}
@Override
public String toString() {
return "MapStoreWrapper{" + "mapName='" + mapName + '\''
+ ", mapStore=" + mapStore + ", mapLoader=" + mapLoader + '}';
}
}