/*

     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 07.08.2005

  *

  */

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

 /**

  * An LP component which can be accessed column-wise.

  * 

  * @author schickin

  *

  */

 public interface LPModelColumns extends LPModelComponent {

     /**

      * Convert a local index into a model index.

      * 

      * @param localColumn the local column.

      * @return the correponding model index.

      */

     public LPModelIndex getColumnModelIndex(int localColumn);

     /* (non-Javadoc)

      * @see net.sourceforge.combean.interfaces.mathprog.linalg.ColumnMatrix#getColumnVector(int)

      */

     public LPSparseVector getColumnVector(int localColumn);

 }