baseduration.java

drools 一个开放源码的规则引擎

package org.drools.semantics.base;

/*
 * $Id: BaseDuration.java,v 1.6 2004/12/14 21:00:26 mproctor Exp $
 *
 * Copyright 2003-2004 (C) The Werken Company. All Rights Reserved.
 *
 * Redistribution and use of this software and associated documentation
 * ("Software"), with or without modification, are permitted provided that the
 * following conditions are met:
 *
 * 1. Redistributions of source code must retain copyright statements and
 * notices. Redistributions must also contain a copy of this document.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. The name "drools" must not be used to endorse or promote products derived
 * from this Software without prior written permission of The Werken Company.
 * For written permission, please contact [e-mail].
 *
 * 4. Products derived from this Software may not be called "drools" nor may
 * "drools" appear in their names without prior written permission of The Werken
 * Company. "drools" is a registered trademark of The Werken Company.
 *
 * 5. Due credit should be given to The Werken Company.
 * (http://drools.werken.com/).
 *
 * THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE WERKEN COMPANY OR ITS CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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 */

import org.drools.rule.Rule;
import org.drools.spi.Duration;
import org.drools.spi.Tuple;

/**
 * Implementation of the <code>Duration</code> interface
 * for specifying truthness duration.
 */
public class BaseDuration implements Duration
{
    /** The number of seconds of the duration. */
    private long seconds;
    
    private Rule rule;

    /**
     * Constructor.
     * 
     * @param seconds the number of seconds of the duration
     */
    public BaseDuration( Rule rule, long seconds )
    {
        this.rule = rule;
        this.seconds = seconds;
    }

    /**
     * Retrieves the duration for which the conditions of this
     * <code>Tuple</code> must remain true before the rule will fire.
     * 
     * @param tuple the <code>Tuple</code>
     * 
     * @return the duration in seconds
     */
    public long getDuration( Tuple tuple )
    {
        return this.seconds;
    }
    
    public Rule getRule( )
    {
        return this.rule;
    }
}