/*

     This file is part of Combean.

     Combean 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; either version 2 of the License, or

     (at your option) any later version.

     Combean 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 Combean; if not, write to the Free Software

     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

 /*

  * Created on 22.04.2005

  *

  */

 package net.sourceforge.combean.interfaces.mathprog.lp;

 import net.sourceforge.combean.interfaces.base.NamedObject;

 /**

  * The right-hand side of a linear constraint, consisting of a relation

  * (less, less equal, greater etc.) and a value.

  * 

  * @author schickin

  *

  */

 public interface LPConstraint extends NamedObject {

     public static final byte REL_UNDEFINED = 0;

     public static final byte REL_EQUAL = 1;

     public static final byte REL_GREATER = 2;

     public static final byte REL_LESS = 3;

     public static final byte REL_COUNT = 4;

     /**

      * Return relation symbol

      * 

      * @return code for relation symbol

      */

     public byte getRelation();

     /**

      * Get value of right-hand side.

      * 

      * @return value of right-hand side.

      */

     public double getRhs();

 }