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Java > Open Source Codes > proguard > io > DataEntryParentFilter


1 /*
2  * ProGuard -- shrinking, optimization, obfuscation, and preverification
3  * of Java bytecode.
4  *
5  * Copyright (c) 2002 Eric Lafortune (eric@graphics.cornell.edu)
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License as published by the Free
9  * Software Foundation; either version 2 of the License, or (at your option)
10  * any later version.
11  *
12  * This program is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15  * more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with this program; if not, write to the Free Software Foundation, Inc.,
19  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  */

21 package proguard.io;
22
23 /**
24  * This DataEntryFilter delegates filtering to a DataEntryFilter for its parent.
25  *
26  * @author Eric Lafortune
27  */

28 public class DataEntryParentFilter
29 implements DataEntryFilter
30 {
31     private DataEntryFilter dataEntryFilter;
32
33
34     /**
35      * Creates a new ParentFilter.
36      * @param dataEntryFilter the filter that will be applied to the data
37      * entry's parent.
38      */

39     public DataEntryParentFilter(DataEntryFilter dataEntryFilter)
40     {
41         this.dataEntryFilter = dataEntryFilter;
42     }
43
44
45     // Implementations for DataEntryFilter.
46

47     public boolean accepts(DataEntry dataEntry)
48     {
49         return dataEntry != null && dataEntryFilter.accepts(dataEntry.getParent());
50     }
51 }
52
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