01: /*
02: (c) Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
03: [See end of file]
04: $Id: Fixed.java,v 1.11 2008/01/02 12:07:58 andy_seaborne Exp $
05: */
06:
07: package com.hp.hpl.jena.graph.query;
08:
09: import com.hp.hpl.jena.graph.*;
10:
11: /**
12: An Element that matches a single specified value.
13:
14: @author hedgehog
15: */
16: public class Fixed extends Element {
17: private Node value;
18:
19: /**
20: Initialise this element with its single matching value: remember that value.
21: */
22: public Fixed(Node x) {
23: this .value = x;
24: }
25:
26: /**
27: Answer true iff we are matched against a node with the same value as ours.
28: @param d the domain with bound values (ignored)
29: @param x the node we are to match
30: @return true iff our value is the same as his
31: */
32:
33: public boolean match(Domain d, Node x) {
34: return x.sameValueAs(value);
35: }
36:
37: /**
38: Answer the Node we represent given the variable-bindings Domain.
39: @param d the variable bindings to use (ignored)
40: @return our fixed value
41: */
42: public Node asNodeMatch(Domain d) {
43: return value;
44: }
45:
46: public String toString() {
47: return "<fixed " + value + ">";
48: }
49: }
50:
51: /*
52: (c) Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
53: All rights reserved.
54:
55: Redistribution and use in source and binary forms, with or without
56: modification, are permitted provided that the following conditions
57: are met:
58:
59: 1. Redistributions of source code must retain the above copyright
60: notice, this list of conditions and the following disclaimer.
61:
62: 2. Redistributions in binary form must reproduce the above copyright
63: notice, this list of conditions and the following disclaimer in the
64: documentation and/or other materials provided with the distribution.
65:
66: 3. The name of the author may not be used to endorse or promote products
67: derived from this software without specific prior written permission.
68:
69: THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
70: IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
71: OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
72: IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
73: INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
74: NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
75: DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
76: THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
77: (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
78: THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
79: */
|