001/*
002 * Copyright 2006-2013 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.batch.item.database.orm;
018
019import org.hibernate.query.Query;
020import org.hibernate.Session;
021import org.hibernate.StatelessSession;
022
023/**
024 * <p>Abstract Hibernate Query Provider to serve as a base class for all
025 * Hibernate {@link Query} providers.</p>
026 *
027 * <p>The implementing provider can be configured to use either
028 * {@link StatelessSession} sufficient for simple mappings without the need
029 * to cascade to associated objects or standard Hibernate {@link Session}
030 * for more advanced mappings or when caching is desired.</p>
031 *
032 * @author Anatoly Polinsky
033 * @author Dave Syer
034 *
035 * @since 2.1
036 *
037 */
038public abstract class AbstractHibernateQueryProvider<T> implements HibernateQueryProvider<T> {
039
040        private StatelessSession statelessSession;
041        private Session statefulSession;
042
043        @Override
044        public void setStatelessSession(StatelessSession statelessSession) {
045                this.statelessSession = statelessSession;
046        }
047
048        @Override
049        public void setSession(Session statefulSession) {
050                this.statefulSession = statefulSession;
051        }
052
053        public boolean isStatelessSession() {
054                return this.statefulSession==null && this.statelessSession!=null;
055        }
056
057        protected StatelessSession getStatelessSession() {
058                return statelessSession;
059        }
060
061        protected Session getStatefulSession() {
062                return statefulSession;
063        }
064}