com.gwtplatform.crawlerservice.server.service.ObjectifyDao Maven / Gradle / Ivy
/*
* Copyright 2011 ArcBees Inc.
*
* 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.gwtplatform.crawlerservice.server.service;
import java.util.Map;
import com.googlecode.objectify.Key;
import com.googlecode.objectify.Objectify;
import com.gwtplatform.crawlerservice.server.objectify.OfyService;
/**
* Generic DAO for use with Objectify.
*
* @param The type of the entity handled by this DAO.
*/
public abstract class ObjectifyDao {
protected final Class clazz;
private Objectify lazyOfy;
@SuppressWarnings("unchecked")
public ObjectifyDao(Class clazz) {
this.clazz = clazz;
}
public T get(Key key) {
return ofy().load().key(key).now();
}
public Key put(T entity) {
return ofy().save().entity(entity).now();
}
public void delete(T entity) {
ofy().delete().entity(entity);
}
public Map, T> get(Iterable> keys) {
return ofy().load().keys(keys);
}
protected final Objectify ofy() {
if (lazyOfy == null) {
lazyOfy = OfyService.ofy();
}
return lazyOfy;
}
}