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Java > Open Source Codes > org > jboss > aspects > versioned > VersionReference


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 import java.lang.ref.WeakReference JavaDoc;
24
25 import org.jboss.aop.InstanceAdvised;
26 import org.jboss.util.id.GUID;
27
28 public class VersionReference implements java.io.Serializable JavaDoc
29 {
30    private static final long serialVersionUID = 1567486678025136095L;
31
32    private GUID guid;
33    private transient WeakReference JavaDoc advisedRef;
34
35    public VersionReference() {}
36
37    public VersionReference(GUID guid)
38    {
39       this(guid, null);
40    }
41    public VersionReference(GUID guid, InstanceAdvised obj)
42    {
43       System.out.println("VERSION REFERENCE CREATION: " + guid);
44       this.guid = guid;
45       set(obj);
46    }
47    public void set(InstanceAdvised obj) { this.advisedRef = new WeakReference JavaDoc(obj); }
48    public InstanceAdvised get()
49    {
50       if (advisedRef != null)
51       {
52          return (InstanceAdvised)advisedRef.get();
53       }
54       return null;
55    }
56    public GUID getGUID() { return guid; }
57 }
58
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