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Java > Open Source Codes > com > hp > hpl > jena > mem > StoreTripleIterator


1 /*
2   (c) Copyright 2004, 2005 Hewlett-Packard Development Company, LP, all rights reserved.
3   [See end of file]
4   $Id: StoreTripleIterator.java,v 1.3 2005/02/21 12:03:47 andy_seaborne Exp $
5 */
6 package com.hp.hpl.jena.mem;
7
8 import java.util.Iterator JavaDoc;
9
10 import com.hp.hpl.jena.graph.Graph;
11
12 /**
13      An iterator wrapper for NodeToTriplesMap iterators which ensures that
14      a .remove on the base iterator is copied to the other two maps of this
15      GraphMem. The current triple (the most recent result of .next) is
16      tracked by the parent <code>TrackingTripleIterator</code> so that it
17      can be removed from the other two maps, which are passed in when this
18      StoreTripleIterator is created.
19      
20     @author kers
21 */
22 public class StoreTripleIterator extends TrackingTripleIterator
23     {
24     protected NodeToTriplesMap A;
25     protected NodeToTriplesMap B;
26     protected Graph toNotify;
27     
28     public StoreTripleIterator( Graph toNotify, Iterator JavaDoc it, NodeToTriplesMap A, NodeToTriplesMap B )
29         {
30         super( it );
31         this.A = A;
32         this.B = B;
33         this.toNotify = toNotify;
34         }
35
36     public void remove()
37         {
38         super.remove();
39         A.remove( current );
40         B.remove( current );
41         toNotify.getEventManager().notifyDeleteTriple( toNotify, current );
42         }
43     }
44
45 /*
46     (c) Copyright 2004, 2005 Hewlett-Packard Development Company, LP
47     All rights reserved.
48     
49     Redistribution and use in source and binary forms, with or without
50     modification, are permitted provided that the following conditions
51     are met:
52     
53     1. Redistributions of source code must retain the above copyright
54        notice, this list of conditions and the following disclaimer.
55     
56     2. Redistributions in binary form must reproduce the above copyright
57        notice, this list of conditions and the following disclaimer in the
58        documentation and/or other materials provided with the distribution.
59     
60     3. The name of the author may not be used to endorse or promote products
61        derived from this software without specific prior written permission.
62     
63     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
64     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
65     OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
66     IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
67     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
68     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
69     DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
70     THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
71     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
72     THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
73 */
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