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1: /** 2: * ======================================== 3: * JFreeReport : a free Java report library 4: * ======================================== 5: * 6: * Project Info: http://reporting.pentaho.org/ 7: * 8: * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors. 9: * 10: * This library is free software; you can redistribute it and/or modify it under the terms 11: * of the GNU Lesser General Public License as published by the Free Software Foundation; 12: * either version 2.1 of the License, or (at your option) any later version. 13: * 14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 16: * See the GNU Lesser General Public License for more details. 17: * 18: * You should have received a copy of the GNU Lesser General Public License along with this 19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, 20: * Boston, MA 02111-1307, USA. 21: * 22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 23: * in the United States and other countries.] 24: * 25: * ------------ 26: * $Id: EmptyReportData.java 2890 2007-06-10 15:54:22Z taqua $ 27: * ------------ 28: * (C) Copyright 2000-2005, by Object Refinery Limited. 29: * (C) Copyright 2005-2007, by Pentaho Corporation. 30: */ 31: package org.jfree.report; 32: 33: /** 34: * Creation-Date: 22.04.2006, 14:25:04 35: * 36: * @author Thomas Morgner 37: */ 38: public class EmptyReportData implements ReportData 39: { 40: public EmptyReportData() 41: { 42: } 43: 44: public int getCursorPosition() throws DataSourceException 45: { 46: return 0; 47: } 48: 49: public boolean isReadable() throws DataSourceException 50: { 51: return false; 52: } 53: 54: public boolean setCursorPosition(final int cursor) throws DataSourceException 55: { 56: if (cursor == ReportData.BEFORE_FIRST_ROW) 57: { 58: return true; 59: } 60: return false; 61: } 62: 63: /** 64: * This operation checks, whether a call to next will be likely to succeed. If there is a next data row, this should 65: * return true. 66: * 67: * @return 68: * @throws DataSourceException 69: * 70: */ 71: public boolean isAdvanceable() throws DataSourceException 72: { 73: return false; 74: } 75: 76: public boolean next() throws DataSourceException 77: { 78: return false; 79: } 80: 81: public void close() throws DataSourceException 82: { 83: 84: } 85: 86: public int getColumnCount() throws DataSourceException 87: { 88: return 0; 89: } 90: 91: public String getColumnName(final int column) throws DataSourceException 92: { 93: return null; 94: } 95: 96: public Object get(final int column) throws DataSourceException 97: { 98: return null; 99: } 100: }