01: /******************************************************************
02: * File: ClauseEntry.java
03: * Created by: Dave Reynolds
04: * Created on: 31-May-2003
05: *
06: * (c) Copyright 2003, 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
07: * [See end of file]
08: * $Id: ClauseEntry.java,v 1.9 2008/01/02 12:07:46 andy_seaborne Exp $
09: *****************************************************************/package com.hp.hpl.jena.reasoner.rulesys;
10:
11: /**
12: * Common interface for all objects that can go into rules.
13: * Strictly these should probably be called terms rather than clause entries.
14: *
15: * @author <a href="mailto:der@hplb.hpl.hp.com">Dave Reynolds</a>
16: * @version $Revision: 1.9 $ on $Date: 2008/01/02 12:07:46 $
17: */
18: public interface ClauseEntry {
19:
20: /**
21: * Compare clause entries, taking into account variable indices.
22: * The equality function ignores differences between variables.
23: */
24: public boolean sameAs(Object o);
25:
26: }
27:
28: /*
29: (c) Copyright 2003, 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
30: All rights reserved.
31:
32: Redistribution and use in source and binary forms, with or without
33: modification, are permitted provided that the following conditions
34: are met:
35:
36: 1. Redistributions of source code must retain the above copyright
37: notice, this list of conditions and the following disclaimer.
38:
39: 2. Redistributions in binary form must reproduce the above copyright
40: notice, this list of conditions and the following disclaimer in the
41: documentation and/or other materials provided with the distribution.
42:
43: 3. The name of the author may not be used to endorse or promote products
44: derived from this software without specific prior written permission.
45:
46: THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
47: IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
48: OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
49: IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
50: INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
51: NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
52: DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
53: THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
54: (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
55: THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
56: */
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