01: /*
02: (c) Copyright 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP, all rights reserved.
03: [See end of file]
04: $Id: ModelExtract.java,v 1.6 2008/01/02 12:05:48 andy_seaborne Exp $
05: */
06:
07: package com.hp.hpl.jena.rdf.model;
08:
09: import com.hp.hpl.jena.graph.Graph;
10: import com.hp.hpl.jena.graph.GraphExtract;
11: import com.hp.hpl.jena.graph.TripleBoundary;
12:
13: /**
14: ModelExtract - a wrapper for GraphExtract, allowing rooted sub-models to be
15: extracted from other models with some boundary condition.
16: @author hedgehog
17: */
18: public class ModelExtract {
19: /**
20: The statement boundary used to bound the extraction.
21: */
22: protected StatementBoundary boundary;
23:
24: /**
25: Initialise this ModelExtract with a boundary condition.
26: */
27: public ModelExtract(StatementBoundary b) {
28: boundary = b;
29: }
30:
31: /**
32: Answer the rooted sub-model.
33: */
34: public Model extract(Resource r, Model s) {
35: return extractInto(ModelFactory.createDefaultModel(), r, s);
36: }
37:
38: /**
39: Answer <code>model</code> after updating it with the sub-graph of
40: <code>s</code> rooted at <code>r</code>, bounded by this instances
41: <code>boundary</code>.
42: */
43: public Model extractInto(Model model, Resource r, Model s) {
44: TripleBoundary tb = boundary.asTripleBoundary(s);
45: Graph g = getGraphExtract(tb).extractInto(model.getGraph(),
46: r.asNode(), s.getGraph());
47: return ModelFactory.createModelForGraph(g);
48: }
49:
50: /**
51: Answer a GraphExtract initialised with <code>tb</code>; extension point
52: for sub-classes (specifically TestModelExtract's mocks).
53: */
54: protected GraphExtract getGraphExtract(TripleBoundary tb) {
55: return new GraphExtract(tb);
56: }
57: }
58:
59: /*
60: (c) Copyright 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
61: All rights reserved.
62:
63: Redistribution and use in source and binary forms, with or without
64: modification, are permitted provided that the following conditions
65: are met:
66:
67: 1. Redistributions of source code must retain the above copyright
68: notice, this list of conditions and the following disclaimer.
69:
70: 2. Redistributions in binary form must reproduce the above copyright
71: notice, this list of conditions and the following disclaimer in the
72: documentation and/or other materials provided with the distribution.
73:
74: 3. The name of the author may not be used to endorse or promote products
75: derived from this software without specific prior written permission.
76:
77: THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
78: IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
79: OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
80: IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
81: INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
82: NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
83: DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
84: THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
85: (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
86: THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
87: */
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