KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > jboss > tools > ClassVersionInfo


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.tools;
23
24 import java.io.ObjectStreamClass JavaDoc;
25 import java.io.Serializable JavaDoc;
26
27 /**
28  * Encapsulates a class serialVersionUID and codebase.
29  *
30  * @author Scott.Stark@jboss.org
31  * @version $Revision: 37459 $
32  */
33 public class ClassVersionInfo implements Serializable JavaDoc
34 {
35    static final long serialVersionUID = 2036506209171911437L;
36
37    /** The named class serialVersionUID as returned by ObjectStreamClass */
38    private long serialVersion;
39    /** The binary class name */
40    private String JavaDoc name;
41    private boolean hasExplicitSerialVersionUID;
42
43    public ClassVersionInfo(String JavaDoc name, ClassLoader JavaDoc loader)
44       throws ClassNotFoundException JavaDoc
45    {
46       this.name = name;
47       Class JavaDoc c = loader.loadClass(name);
48       if( c.isInterface() == false )
49       {
50          ObjectStreamClass JavaDoc osc = ObjectStreamClass.lookup(c);
51          if( osc != null )
52          {
53             serialVersion = osc.getSerialVersionUID();
54             try
55             {
56                c.getDeclaredField("serialVersionUID");
57                hasExplicitSerialVersionUID = true;
58             }
59             catch(NoSuchFieldException JavaDoc e)
60             {
61                hasExplicitSerialVersionUID = false;
62             }
63          }
64       }
65    }
66
67    public long getSerialVersion()
68    {
69       return serialVersion;
70    }
71    public boolean getHasExplicitSerialVersionUID()
72    {
73       return hasExplicitSerialVersionUID;
74    }
75    public String JavaDoc getName()
76    {
77       return name;
78    }
79
80    public String JavaDoc toString()
81    {
82       StringBuffer JavaDoc tmp = new StringBuffer JavaDoc("ClassVersionInfo");
83       tmp.append('{');
84       tmp.append("serialVersion=");
85       tmp.append(serialVersion);
86       tmp.append(", hasExplicitSerialVersionUID=");
87       tmp.append(hasExplicitSerialVersionUID);
88       tmp.append(", name=");
89       tmp.append(name);
90       tmp.append('}');
91       return tmp.toString();
92    }
93 }
94
Popular Tags