001    /**
002     *   GRANITE DATA SERVICES
003     *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004     *
005     *   This file is part of the Granite Data Services Platform.
006     *
007     *   Granite Data Services is free software; you can redistribute it and/or
008     *   modify it under the terms of the GNU Lesser General Public
009     *   License as published by the Free Software Foundation; either
010     *   version 2.1 of the License, or (at your option) any later version.
011     *
012     *   Granite Data Services is distributed in the hope that it will be useful,
013     *   but WITHOUT ANY WARRANTY; without even the implied warranty of
014     *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015     *   General Public License for more details.
016     *
017     *   You should have received a copy of the GNU Lesser General Public
018     *   License along with this library; if not, write to the Free Software
019     *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020     *   USA, or see <http://www.gnu.org/licenses/>.
021     */
022    package org.granite.gravity.selector;
023    
024    import javax.jms.JMSException;
025    
026    /**
027     * A BooleanExpression is an expression that always
028     * produces a Boolean result.
029     *
030     * @version $Revision: 1.2 $
031     */
032    public interface BooleanExpression extends Expression {
033    
034        /**
035         * @param message
036         * @return true if the expression evaluates to Boolean.TRUE.
037         * @throws JMSException
038         */
039        public boolean matches(MessageEvaluationContext message) throws JMSException;
040    
041    }