01: /******************************************************************
02: * File: LPInterpeterContext.java
03: * Created by: Dave Reynolds
04: * Created on: 09-Aug-2003
05: *
06: * (c) Copyright 2003, 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
07: * [See end of file]
08: * $Id: LPInterpreterContext.java,v 1.7 2008/01/02 12:06:15 andy_seaborne Exp $
09: *****************************************************************/package com.hp.hpl.jena.reasoner.rulesys.impl;
10:
11: /**
12: * The context in which an LPInterpreter instance is running.
13: * The context the entity that should be notified when a branch has been
14: * suspended awaiting further results for a given generator.
15: *
16: * @author <a href="mailto:der@hplb.hpl.hp.com">Dave Reynolds</a>
17: * @version $Revision: 1.7 $ on $Date: 2008/01/02 12:06:15 $
18: */
19: public interface LPInterpreterContext extends LPInterpreterState {
20:
21: /** Notify this context that a branch was suspended awaiting futher
22: * results for the given choice point. */
23: public void notifyBlockedOn(ConsumerChoicePointFrame ccp);
24:
25: /** Test if one of our top level choice points is ready to be reactivated */
26: public boolean isReady();
27:
28: /** Notify this context that the given choice point has terminated
29: * and can be remove from the wait list. */
30: public void notifyFinished(ConsumerChoicePointFrame ccp);
31:
32: /** Called by a generating choice point to indicate we can be run
33: * because the indicated choice point is ready. */
34: public void setReady(ConsumerChoicePointFrame ccp);
35:
36: }
37:
38: /*
39: (c) Copyright 2003, 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
40: All rights reserved.
41:
42: Redistribution and use in source and binary forms, with or without
43: modification, are permitted provided that the following conditions
44: are met:
45:
46: 1. Redistributions of source code must retain the above copyright
47: notice, this list of conditions and the following disclaimer.
48:
49: 2. Redistributions in binary form must reproduce the above copyright
50: notice, this list of conditions and the following disclaimer in the
51: documentation and/or other materials provided with the distribution.
52:
53: 3. The name of the author may not be used to endorse or promote products
54: derived from this software without specific prior written permission.
55:
56: THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
57: IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
58: OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
59: IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
60: INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
61: NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
62: DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
63: THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
64: (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
65: THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
66: */
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