01: /*
02: (c) Copyright 2003, 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
03: [See end of file]
04: $Id: Intersection.java,v 1.9 2008/01/02 12:10:19 andy_seaborne Exp $
05: */
06:
07: /*
08: INSERT HP DISCLAIMER HERE
09:
10: Dynamic intersection, May 2002, hedgehog
11: */
12:
13: package com.hp.hpl.jena.graph.compose;
14:
15: import com.hp.hpl.jena.graph.*;
16: import com.hp.hpl.jena.util.iterator.*;
17:
18: /**
19: an implementation of a dynamic intersection of two models.
20:
21: @author hedgehog
22: */
23:
24: public class Intersection extends Dyadic implements Graph {
25: public Intersection(Graph L, Graph R) {
26: super (L, R);
27: }
28:
29: public void performAdd(Triple t) {
30: L.add(t);
31: R.add(t);
32: }
33:
34: public void performDelete(Triple t) {
35: if (this .contains(t))
36: L.delete(t);
37: }
38:
39: public ExtendedIterator graphBaseFind(TripleMatch s) {
40: return L.find(s).filterKeep(ifIn(R));
41: }
42: }
43:
44: /*
45: (c) Copyright 2003, 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
46: All rights reserved.
47:
48: Redistribution and use in source and binary forms, with or without
49: modification, are permitted provided that the following conditions
50: are met:
51:
52: 1. Redistributions of source code must retain the above copyright
53: notice, this list of conditions and the following disclaimer.
54:
55: 2. Redistributions in binary form must reproduce the above copyright
56: notice, this list of conditions and the following disclaimer in the
57: documentation and/or other materials provided with the distribution.
58:
59: 3. The name of the author may not be used to endorse or promote products
60: derived from this software without specific prior written permission.
61:
62: THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
63: IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
64: OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
65: IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
66: INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
67: NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
68: DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
69: THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
70: (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
71: THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
72: */
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