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Java > Open Source Codes > org > jacorb > notification > filter > FilterConstraint


1 package org.jacorb.notification.filter;
2
3 /*
4  * JacORB - a free Java ORB
5  *
6  * Copyright (C) 1999-2004 Gerald Brose
7  *
8  * This library is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Library General Public
10  * License as published by the Free Software Foundation; either
11  * version 2 of the License, or (at your option) any later version.
12  *
13  * This library is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Library General Public License for more details.
17  *
18  * You should have received a copy of the GNU Library General Public
19  * License along with this library; if not, write to the Free
20  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21  *
22  */
23
24 import org.jacorb.notification.interfaces.Message;
25
26 /**
27  * Representation of a Constraint.
28  * A {@link org.jacorb.notification.filter.AbstractFilter Filter} encapsulates
29  * several Constraints. Each Constraint is represented by an instance
30  * of this Class.
31  *
32  * @author Alphonse Bendt
33  * @version $Id: FilterConstraint.java,v 1.10 2005/05/01 21:51:46 alphonse.bendt Exp $
34  */
35
36 public interface FilterConstraint
37 {
38     EvaluationResult evaluate( EvaluationContext evaluationContext,
39                                       Message event )
40         throws EvaluationException;
41 }
42
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