001// Copyright 2007, 2008 The Apache Software Foundation 002// 003// Licensed under the Apache License, Version 2.0 (the "License"); 004// you may not use this file except in compliance with the License. 005// You may obtain a copy of the License at 006// 007// http://www.apache.org/licenses/LICENSE-2.0 008// 009// Unless required by applicable law or agreed to in writing, software 010// distributed under the License is distributed on an "AS IS" BASIS, 011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012// See the License for the specific language governing permissions and 013// limitations under the License. 014 015package org.apache.tapestry5.hibernate.internal; 016 017import org.apache.tapestry5.hibernate.HibernateSessionManager; 018import org.apache.tapestry5.hibernate.HibernateSessionSource; 019import org.apache.tapestry5.ioc.services.ThreadCleanupListener; 020import org.hibernate.Session; 021import org.hibernate.Transaction; 022 023public class HibernateSessionManagerImpl implements HibernateSessionManager, ThreadCleanupListener 024{ 025 private final Session session; 026 027 private Transaction transaction; 028 029 public HibernateSessionManagerImpl(HibernateSessionSource source) 030 { 031 session = source.create(); 032 033 startNewTransaction(); 034 } 035 036 private void startNewTransaction() 037 { 038 transaction = session.beginTransaction(); 039 } 040 041 @Override 042 public void abort() 043 { 044 transaction.rollback(); 045 startNewTransaction(); 046 } 047 048 @Override 049 public void commit() 050 { 051 transaction.commit(); 052 startNewTransaction(); 053 } 054 055 @Override 056 public Session getSession() 057 { 058 return session; 059 } 060 061 /** 062 * Rollsback the transaction at the end of the request, then closes the session. This means that any uncommitted 063 * changes are lost; code should inject the HSM and invoke {@link #commit()} after making any changes, if they 064 * should persist. 065 */ 066 @Override 067 public void threadDidCleanup() 068 { 069 transaction.rollback(); 070 071 session.close(); 072 } 073}