/*
*
* ====================================================================
*
* Copyright 2004 The Apache Software Foundation
*
* 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.apache.slide.projector.store;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import org.apache.slide.projector.Projector;
import org.apache.slide.projector.Store;
import org.apache.slide.projector.value.MapValue;
public class ProcessStore extends AbstractStore {
private final static String STORAGE_PREFIX = "process/";
private Store store;
private String processId, storageKey;
private Map map;
private MapValue mapResource;
public ProcessStore(Store store) {
this.store = store;
}
public String getProcessId() {
return processId;
}
public void setProcessId(String processId) {
this.processId = processId;
this.storageKey = Projector.getWorkDir()+STORAGE_PREFIX+processId;
}
public void put(String key, Object value) throws IOException {
getMap().put(key, value);
store.put(storageKey, mapResource);
}
public Object get(String key) throws IOException {
return getMap().get(key);
}
public void dispose(String key) throws IOException {
getMap().remove(key);
store.put(storageKey, mapResource);
}
private Map getMap() throws IOException {
if ( mapResource != null ) return mapResource.getMap();
mapResource = (MapValue)store.get(storageKey);
if ( mapResource == null ) {
map = new HashMap();
mapResource = new MapValue(map);
return map;
} else {
return mapResource.getMap();
}
}
}