1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
/**
* ================================================
* LibLoader : a free Java resource loading library
* ================================================
*
* Project Info: http://reporting.pentaho.org/libloader/
*
* (C) Copyright 2006, by Pentaho Corporation and Contributors.
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
*
* ------------
* $Id: SimpleResource.java 3520 2007-10-16 10:34:47Z tmorgner $
* ------------
* (C) Copyright 2006, by Pentaho Corporation.
*/
package org.jfree.resourceloader;
/**
* A simple resource with only a single dependency.
*
* @author Thomas Morgner
*/
public class SimpleResource implements Resource
{
private Object value;
private ResourceKey key;
private long version;
public SimpleResource(final ResourceKey key,
final Object value,
final long version)
{
if (key == null)
{
throw new NullPointerException();
}
this.value = value;
this.key = key;
this.version = version;
}
public Object getResource()
{
return value;
}
public long getVersion(final ResourceKey key)
{
if (key.equals(this.key))
{
return version;
}
// -1 is the placeholder for: not known.
return -1;
}
/**
* The primary source is also included in this set. The dependencies are given
* as ResourceKey objects. The keys itself do not hold any state information.
* <p/>
* The dependencies do not track deep dependencies. So if Resource A depends
* on Resource B which depends on Resource C, then A only knows about B, not
* C.
*
* @return
*/
public ResourceKey[] getDependencies()
{
return new ResourceKey[]{getSource()};
}
public ResourceKey getSource()
{
return key;
}
}
|
