VersionManager


1   /*
2     * JBoss, Home of Professional Open Source
3     * Copyright 2005, JBoss Inc., and individual contributors as indicated
4     * by the @authors tag. See the copyright.txt in the distribution for a
5     * full listing of individual contributors.
6     *
7     * This is free software; you can redistribute it and/or modify it
8     * under the terms of the GNU Lesser General Public License as
9     * published by the Free Software Foundation; either version 2.1 of
10    * the License, or (at your option) any later version.
11    *
12    * This software is distributed in the hope that it will be useful,
13    * but WITHOUT ANY WARRANTY; without even the implied warranty of
14    * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15    * Lesser General Public License for more details.
16    *
17    * You should have received a copy of the GNU Lesser General Public
18    * License along with this software; if not, write to the Free
19    * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20    * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21    */
22  package org.jboss.aspects.versioned;
23  
24  import org.jboss.aop.InstanceAdvised;
25  import org.jboss.util.id.GUID;
26  
27  /**
28   *
29   *  @author <a HREF="mailto:bill@jboss.org">Bill Burke</a>
30   *  @version $Revision: 37406 $
31   */
32  public abstract class VersionManager
33  {
34     public static final String   VERSION_MANAGER = "VERSION_MANAGER";
35     public static final String   VERSION_ID = "VERSION_ID";
36  
37  
38     public static GUID getGUID(InstanceAdvised obj)
39     {
40        return (GUID)obj._getInstanceAdvisor().getMetaData().getMetaData(VERSION_MANAGER, VERSION_ID);
41     }
42  
43     public abstract boolean isVersioned(Object   advised);
44     public abstract Object   makeVersioned(Object   obj) throws Exception  ;
45  }
46
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