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/*
* 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.apache.tuscany.sca.cloud.data.impl;
import java.util.UUID;
import org.apache.tuscany.sca.cloud.data.DocumentService;
import org.apache.tuscany.sca.data.collection.Entry;
import org.apache.tuscany.sca.data.collection.NotFoundException;
import org.oasisopen.sca.annotation.Init;
import org.oasisopen.sca.annotation.Property;
import com.google.appengine.api.memcache.Expiration;
import com.google.appengine.api.memcache.MemcacheService;
import com.google.appengine.api.memcache.MemcacheServiceFactory;
public class MemcacheDocumentServiceImpl implements DocumentService<Object, Object> {
private MemcacheService googleMemecacheService;
@Property(required=false)
protected Expiration defaultExpiration = Expiration.byDeltaSeconds(3600); // 1hr
@Init
public void init() {
googleMemecacheService = MemcacheServiceFactory.getMemcacheService();
}
public Entry<Object, Object>[] getAll() {
throw new UnsupportedOperationException();
}
public Object get(Object key) throws NotFoundException {
Object entity = null;
entity = googleMemecacheService.get(key);
if(entity == null) {
throw new NotFoundException("Could not find object with key '" + key.toString() + "'");
}
return entity;
}
public Object post(Object key, Object entity) {
if( key == null ) {
key = UUID.randomUUID().toString();
}
googleMemecacheService.put(key, entity, defaultExpiration);
return entity;
}
public void put(Object key, Object entity) throws NotFoundException {
if( get(key) == null) {
throw new NotFoundException("Could not find entity with key '" + key.toString() +"'");
}
googleMemecacheService.put(key, entity, defaultExpiration);
}
public void delete(Object key) throws NotFoundException {
googleMemecacheService.delete(key);
}
public void delete(Object... keys) throws NotFoundException {
googleMemecacheService.delete(keys);
}
public Entry<Object, Object>[] query(String query) {
throw new UnsupportedOperationException();
}
}
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