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/*

Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016.  All rights reserved.

Contact:
     SYSTAP, LLC DBA Blazegraph
     2501 Calvert ST NW #106
     Washington, DC 20008
     [email protected]

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/
package com.bigdata.rdf.internal.constraints;

import java.util.Map;

import com.bigdata.bop.BOp;
import com.bigdata.bop.IBindingSet;

/**
 * Always evaluates to false.
 */
public class FalseBOp extends XSDBooleanIVValueExpression {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1531344906063447800L;

	public static final FalseBOp INSTANCE = new FalseBOp();

	private FalseBOp() {
		
		this(BOp.NOARGS, BOp.NOANNS);
		
	}
	
    /**
     * Required shallow copy constructor.
     */
    public FalseBOp(final BOp[] args, final Map anns) {
    	
        super(args, anns);
        
    }

    /**
     * Constructor required for {@link com.bigdata.bop.BOpUtility#deepCopy(FilterNode)}.
     */
    public FalseBOp(final FalseBOp op) {
        super(op);
    }

    public boolean accept(final IBindingSet bs) {

    	return false;

    }
    
}