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Java > Open Source Codes > com > hp > hpl > jena > graph > query > SimpleQueryPlan


1 /*
2   (c) Copyright 2002, 2003, 2004, 2005 Hewlett-Packard Development Company, LP
3   [See end of file]
4   $Id: SimpleQueryPlan.java,v 1.9 2005/02/21 11:52:25 andy_seaborne Exp $
5 */
6
7 package com.hp.hpl.jena.graph.query;
8
9 import java.util.ArrayList JavaDoc;
10
11 import com.hp.hpl.jena.util.iterator.*;
12 import com.hp.hpl.jena.graph.*;
13
14 /**
15     SimpleQueryPlan is an implementation of QueryPlan which uses the engine defined
16     in Query to do the work.
17     
18     @author kers
19 */
20 public class SimpleQueryPlan implements BindingQueryPlan
21     {
22     private Graph graph;
23     private Query query;
24     private Node [] variables;
25     
26     public SimpleQueryPlan( Graph graph, Query query, Node [] variables )
27         {
28         this.graph = graph;
29         this.query = query;
30         this.variables = variables;
31         }
32         
33     public ExtendedIterator executeBindings()
34         // { return query.executeBindings( graph, variables ); }
35 {
36         return new SimpleQueryEngine( query.getTriples(), query.getSorter(), query.getConstraints() )
37             .executeBindings( new ArrayList JavaDoc(), query.args().put( NamedTripleBunches.anon, graph ), variables );
38         }
39     }
40     
41 /*
42     (c) Copyright 2002, 2003, 2004, 2005 Hewlett-Packard Development Company, LP
43     All rights reserved.
44
45     Redistribution and use in source and binary forms, with or without
46     modification, are permitted provided that the following conditions
47     are met:
48
49     1. Redistributions of source code must retain the above copyright
50        notice, this list of conditions and the following disclaimer.
51
52     2. Redistributions in binary form must reproduce the above copyright
53        notice, this list of conditions and the following disclaimer in the
54        documentation and/or other materials provided with the distribution.
55
56     3. The name of the author may not be used to endorse or promote products
57        derived from this software without specific prior written permission.
58
59     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
60     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
61     OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
62     IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
63     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
64     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
65     DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
66     THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
67     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
68     THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
69 */
70
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