01: /*
02: (c) Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
03: [See end of file]
04: $Id: PatternCompiler.java,v 1.8 2008/01/02 12:07:57 andy_seaborne Exp $
05: */
06:
07: package com.hp.hpl.jena.graph.query;
08:
09: import com.hp.hpl.jena.graph.*;
10:
11: /**
12: A PatternCompiler is some class that knows how to handle fixed Node values,
13: binding and bound occurences of variables, and wildcards.
14: @author kers
15: */
16:
17: public interface PatternCompiler {
18: /**
19: Method called to deliver a compiled Element constructed from a constant Node.
20: */
21: public Element fixed(Node value);
22:
23: /**
24: Method called to deliver a compiled element from a bound occurance of a
25: variable Node allocated at a given index position.
26: */
27: public Element bound(Node n, int index);
28:
29: /**
30: Method called to deliver a compiled element from a binding occurance of a
31: variable Node allocated at a given index position.
32: */
33: public Element bind(Node n, int index);
34:
35: /**
36: Method called to deliver a compiled element from a wildcard ANY.
37: */
38: public Element any();
39: }
40:
41: /*
42: (c) Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008 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: */
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