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 }