/*

     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.mathprog.lp;

 import net.sourceforge.combean.interfaces.mathprog.lp.LPConstraint;

 import net.sourceforge.combean.mathprog.lp.model.statics.LPModelStringifier;

 /**

  * A linear constraint with representation based on plain Java doubles.

  * 

  * @author schickin

  *

  */

 public class DoubleLPConstraint implements LPConstraint {

     private byte relation = LPConstraint.REL_UNDEFINED;

     private double rhs = 0.0;

     private String name = "";

     /**

      * Constructor for an unnamed constraint

      * 

      * @param relation the relation

      * @param rhs the right-hand side

      */

     public DoubleLPConstraint(byte relation, double rhs) {

         super();

         this.relation = relation;

         this.rhs = rhs;

     }

     /**

      * Constructor of a named constraint

      * 

      * @param name the name of the constraint

      * @param relation the relation

      * @param rhs the right-hand side

      */

     public DoubleLPConstraint(String name, byte relation, double rhs) {

         super();

         this.name = name;

         this.relation = relation;

         this.rhs = rhs;

     }

     /* (non-Javadoc)

      * @see net.sourceforge.combean.interfaces.mathprog.lp.LPConstraint#getRelation()

      */

     public byte getRelation() {

          return this.relation;

     }

     /* (non-Javadoc)

      * @see net.sourceforge.combean.interfaces.mathprog.lp.LPConstraint#getRhs()

      */

     public double getRhs() {

          return this.rhs;

     }

     /* (non-Javadoc)

      * @see net.sourceforge.combean.interfaces.base.NamedObject#getName()

      */

     public String getName() {

          return this.name;

     }

     public String toString() {

         StringBuffer result = new StringBuffer();

         result.append(getClass().getName() + " {");

         result.append(" name '" + getName() + "'");

         result.append(" " +

                 LPModelStringifier.getRelationSymbol(getRelation()) +

                 " " + getRhs());

         result.append("}");

         return result.toString();

     }

 }