4 * Copyright (C) 2001, 2002, 2003 The Mir-coders group
6 * This file is part of Mir.
8 * Mir is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * Mir is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with Mir; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * In addition, as a special exception, The Mir-coders gives permission to link
23 * the code of this program with any library licensed under the Apache Software License,
24 * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
25 * (or with modified versions of the above that use the same license as the above),
26 * and distribute linked combinations including the two. You must obey the
27 * GNU General Public License in all respects for all of the code used other than
28 * the above mentioned libraries. If you modify this file, you may extend this
29 * exception to your version of the file, but you are not obligated to do so.
30 * If you do not wish to do so, delete this exception statement from your version.
33 package mir.core.service.storage;
35 import java.util.List;
37 import net.sf.hibernate.Criteria;
38 import net.sf.hibernate.HibernateException;
39 import net.sf.hibernate.Session;
40 import net.sf.hibernate.SessionFactory;
41 import net.sf.hibernate.Transaction;
42 import net.sf.hibernate.expression.Expression;
48 * @version $Id: StorageService.java,v 1.1 2003/08/17 19:11:49 idfx Exp $
50 public abstract class StorageService {
51 private Class objectClass;
52 private SessionFactory factory;
54 public StorageService(Class objectClass, SessionFactory factory){
55 this.objectClass = objectClass;
56 this.factory = factory;
59 public List list(int offset, int limit){
60 return list(offset, limit, null);
63 public List list(int offset, int limit, Expression expression){
65 Session session = factory.openSession();
66 Transaction transaction = session.beginTransaction();
67 Criteria criteria = session.createCriteria(objectClass);
68 if(expression != null){
69 System.out.println(expression.toString());
70 criteria = criteria.add(expression);
72 criteria.setFirstResult(offset)
73 .setMaxResults(limit);
74 List returnList = criteria.list();
78 } catch (HibernateException e) {
79 throw new StorageServiceFailure(e);
83 public Object load(Integer id){
85 Session session = factory.openSession();
86 Transaction transaction = session.beginTransaction();
87 Object returnObject = session.load(objectClass, id);
91 } catch (HibernateException e) {
92 throw new StorageServiceFailure(e);
96 public Integer add(Object newObject){
98 Session session = factory.openSession();
99 Transaction transaction = session.beginTransaction();
100 Integer newid = (Integer)session.save(newObject);
103 } catch (HibernateException e) {
104 throw new StorageServiceFailure(e);
108 public void update(Object toUpdate){
110 Session session = factory.openSession();
111 Transaction transaction = session.beginTransaction();
112 session.update(toUpdate);
114 } catch (HibernateException e) {
115 throw new StorageServiceFailure(e);
119 public void delete(Object toDelete){
121 Session session = factory.openSession();
122 Transaction transaction = session.beginTransaction();
123 session.delete(toDelete);
125 } catch (HibernateException e) {
126 throw new StorageServiceFailure(e);