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Java > Open Source Codes > com > hp > hpl > jena > rdf > listeners > StatementListener


1 /*
2   (c) Copyright 2003, 2004, 2005 Hewlett-Packard Development Company, LP
3   [See end of file]
4   $Id: StatementListener.java,v 1.6 2005/02/21 12:13:24 andy_seaborne Exp $
5 */
6
7 package com.hp.hpl.jena.rdf.listeners;
8
9 import com.hp.hpl.jena.rdf.model.*;
10 import java.util.*;
11
12 /**
13     A listener that filters all its listening down to the single-statement level. Users of this
14     class override <code>addedStatement(Statement)</code> and
15     <code>removedStatement(Statement)</code>.
16     @author kers
17 */
18 public class StatementListener implements ModelChangedListener
19     {
20     /**
21         Override this to listen to all incoming added statements
22     */
23     public void addedStatement( Statement s ) {}
24     /**
25         Override this to listen to all incoming removed statements
26     */
27     public void removedStatement( Statement s ) {}
28 /* */
29     public void addedStatements( Statement [] statements )
30         { for (int i = 0; i < statements.length; i += 1) addedStatement( statements[i] ); }
31     public void addedStatements( List statements )
32         { for (int i = 0; i < statements.size(); i += 1) addedStatement( (Statement) statements.get(i) ); }
33     public void addedStatements( StmtIterator statements )
34         { while (statements.hasNext()) addedStatement( statements.nextStatement() ); }
35     public void addedStatements( Model m )
36         { addedStatements( m.listStatements() ); }
37     public void removedStatements( Statement [] statements )
38         { for (int i = 0; i < statements.length; i += 1) removedStatement( statements[i] ); }
39     public void removedStatements( List statements )
40         { for (int i = 0; i < statements.size(); i += 1) removedStatement( (Statement) statements.get(i) ); }
41     public void removedStatements( StmtIterator statements )
42         { while (statements.hasNext()) removedStatement( statements.nextStatement() ); }
43     public void removedStatements( Model m )
44         { removedStatements( m.listStatements() ); }
45     public void notifyEvent( Model m, Object JavaDoc event )
46         {}
47     }
48
49
50 /*
51     (c) Copyright 2003, 2004, 2005 Hewlett-Packard Development Company, LP
52     All rights reserved.
53
54     Redistribution and use in source and binary forms, with or without
55     modification, are permitted provided that the following conditions
56     are met:
57
58     1. Redistributions of source code must retain the above copyright
59        notice, this list of conditions and the following disclaimer.
60
61     2. Redistributions in binary form must reproduce the above copyright
62        notice, this list of conditions and the following disclaimer in the
63        documentation and/or other materials provided with the distribution.
64
65     3. The name of the author may not be used to endorse or promote products
66        derived from this software without specific prior written permission.
67
68     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
69     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
70     OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
71     IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
72     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
73     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
74     DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
75     THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
76     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
77     THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
78 */
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