Java tutorial
/** * Copyright 2010 lazyboybd@gmail.com, Debasis Roy * * 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.douchebag.server.dao; import com.douchebag.server.entity.Path; import com.douchebag.server.hibernate.HibernateHelper; import java.util.List; import org.hibernate.Query; /** * * @author debasis */ public class PathDAO { public void addPath(String p) throws Exception { if (!isAlreadyExist(p)) { HibernateHelper hibernateHelper = new HibernateHelper(); Path path = new Path(); path.setP(p); hibernateHelper.save(path); hibernateHelper.close(); } } public List<Path> getPaths() throws Exception { List<Path> paths; HibernateHelper hibernateHelper = new HibernateHelper(); Query query = hibernateHelper.createQuery("from " + Path.class.getName()); paths = hibernateHelper.list(query); hibernateHelper.close(); return paths; } private boolean isAlreadyExist(String p) throws Exception { HibernateHelper hibernateHelper = new HibernateHelper(); Query query = hibernateHelper.createQuery("from " + Path.class.getName() + " p where p.p = :path"); query.setString("path", p); List pathList = hibernateHelper.list(query); hibernateHelper.close(); return !pathList.isEmpty(); } }