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,v 1.3 2007/04/01 18:49:33 taqua Exp $
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 (DataSet ds, String column)
049 throws DataSourceException
050 {
051 return getByName(ds, column, null);
052 }
053
054 public static Object getByName (DataSet ds, String column, 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 (String name, 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 }