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Java > Open Source Codes > com > hp > hpl > jena > util > iterator > Filter


1 /*
2  * (c) Copyright 2000, 2001, 2002, 2002, 2003, 2004, 2005 Hewlett-Packard Development Company, LP
3  * [See end of file]
4  * $Id: Filter.java,v 1.4 2005/02/21 12:19:15 andy_seaborne Exp $
5  */
6
7 package com.hp.hpl.jena.util.iterator;
8
9 /** A boolean function for filtering.
10  * @author jjc
11  * @version Release='$Name: $' Revision='$Revision: 1.4 $' Date='$Date: 2005/02/21 12:19:15 $'
12  */
13 public interface Filter
14 {
15 /** The object is wanted.
16  * @param o The object to accept or reject.
17  * @return true if the object is wanted.
18  */
19     public boolean accept(Object JavaDoc o);
20     
21     /**
22         a filter that accepts anything.
23         (useful when a general method wants a Filter, but we'll
24         take anything).
25     */
26     public static final Filter any = new Filter()
27         { public final boolean accept( Object JavaDoc o ) { return true; } };
28         
29 }
30
31 /*
32  * (c) Copyright 2000, 2001, 2002, 2002, 2003, 2004, 2005 Hewlett-Packard Development Company, LP
33  * All rights reserved.
34  *
35  * Redistribution and use in source and binary forms, with or without
36  * modification, are permitted provided that the following conditions
37  * are met:
38  * 1. Redistributions of source code must retain the above copyright
39  * notice, this list of conditions and the following disclaimer.
40  * 2. Redistributions in binary form must reproduce the above copyright
41  * notice, this list of conditions and the following disclaimer in the
42  * documentation and/or other materials provided with the distribution.
43  * 3. The name of the author may not be used to endorse or promote products
44  * derived from this software without specific prior written permission.
45
46  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
47  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
48  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
49  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
50  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
51  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
52  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
53  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
54  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
55  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
56  *
57  * $Id: Filter.java,v 1.4 2005/02/21 12:19:15 andy_seaborne Exp $
58  *
59  */
60
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