001    /**
002     * ========================================
003     * JFreeReport : a free Java report library
004     * ========================================
005     *
006     * Project Info:  http://reporting.pentaho.org/
007     *
008     * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
009     *
010     * This library is free software; you can redistribute it and/or modify it under the terms
011     * of the GNU Lesser General Public License as published by the Free Software Foundation;
012     * either version 2.1 of the License, or (at your option) any later version.
013     *
014     * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
015     * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016     * See the GNU Lesser General Public License for more details.
017     *
018     * You should have received a copy of the GNU Lesser General Public License along with this
019     * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
020     * Boston, MA 02111-1307, USA.
021     *
022     * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
023     * in the United States and other countries.]
024     *
025     * ------------
026     * $Id: DataSetUtility.java 3525 2007-10-16 11:43:48Z tmorgner $
027     * ------------
028     * (C) Copyright 2000-2005, by Object Refinery Limited.
029     * (C) Copyright 2005-2007, by Pentaho Corporation.
030     */
031    package org.jfree.report.util;
032    
033    import org.jfree.report.DataSet;
034    import org.jfree.report.DataSourceException;
035    import org.jfree.util.ObjectUtilities;
036    
037    /**
038     * Creation-Date: 17.04.2006, 11:43:04
039     *
040     * @author Thomas Morgner
041     */
042    public class DataSetUtility
043    {
044      private DataSetUtility()
045      {
046      }
047    
048      public static Object getByName (final DataSet ds, final String column)
049              throws DataSourceException
050      {
051        return getByName(ds, column, null);
052      }
053    
054      public static Object getByName (final DataSet ds, final String column, final Object defaultVal)
055              throws DataSourceException
056      {
057        final int size = ds.getColumnCount();
058        for (int i = 0; i < size; i++)
059        {
060          final String columnName = ds.getColumnName(i);
061          if (ObjectUtilities.equal(column, columnName))
062          {
063            return ds.get(i);
064          }
065        }
066        return defaultVal;
067      }
068    
069    
070      public static boolean isColumnDefined (final String name, final DataSet params)
071              throws DataSourceException
072      {
073        final int size = params.getColumnCount();
074        for (int i = 0; i < size; i++)
075        {
076          final String columnName = params.getColumnName(i);
077          if (ObjectUtilities.equal(name, columnName))
078          {
079            return true;
080          }
081        }
082        return false;
083      }
084    
085    }