1 /*
2 jGuard is a security framework based on top of jaas (java authentication and authorization security).
3 it is written for web applications, to resolve simply, access control problems.
4 version $Name$
5 http://sourceforge.net/projects/jguard/
6
7 Copyright (C) 2004 Charles GAY
8
9 This library is free software; you can redistribute it and/or
10 modify it under the terms of the GNU Lesser General Public
11 License as published by the Free Software Foundation; either
12 version 2.1 of the License, or (at your option) any later version.
13
14 This library is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 Lesser General Public License for more details.
18
19 You should have received a copy of the GNU Lesser General Public
20 License along with this library; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22
23
24 jGuard project home page:
25 http://sourceforge.net/projects/jguard/
26
27 */
28 package net.sf.jguard.ext.filters;
29
30 import net.sf.jguard.core.authentication.AccessContext;
31 import net.sf.jguard.core.filters.Filter;
32 import net.sf.jguard.core.filters.FilterChain;
33 import org.hibernate.Session;
34 import org.hibernate.SessionFactory;
35 import org.hibernate.Transaction;
36 import org.slf4j.Logger;
37 import org.slf4j.LoggerFactory;
38
39 /**
40 * Hibernate {@link Filter} implementation which permits to support the <i>open
41 * session in view filter</i> pattern.
42 * it will open the Hibernate (and begin an Hibernate Transaction) if not yet
43 * opened when at doFilter begin method, and close the Hibernate Session
44 * (and commit the HIbernate Transaction) at the end.
45 * @author <a href="mailto:diabolo512@users.sourceforge.net">Charles Gay</a>
46 */
47 public class HibernateFilter implements Filter{
48 private static final Logger logger = LoggerFactory.getLogger(HibernateFilter.class.getName());
49 private SessionFactory sessionFactory = null;
50 public HibernateFilter(SessionFactory sessionFactory){
51 this.sessionFactory = sessionFactory;
52 }
53 public void doFilter(AccessContext context, FilterChain chain) {
54 Session session = null;
55 Transaction tx = null;
56
57 try{
58
59 session = sessionFactory.getCurrentSession();
60 tx = session.beginTransaction();
61 logger.debug(" ##### before doFilter in HibernateFilter");
62 chain.doFilter(context);
63 logger.debug(" ##### after doFilter in HibernateFilter");
64 tx.commit();
65 }catch(Throwable t){
66 if(tx!=null){
67 tx.rollback();
68 logger.error(t.getMessage());
69 throw new RuntimeException(t);
70 }
71
72 }finally{
73 if(session.isOpen()){
74 session.close();
75 }
76 }
77 }
78
79 }