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: BigIntegerValueConverter.java 3048 2007-07-28 18:02:42Z 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.beans; 032 033 import java.math.BigInteger; 034 035 /** 036 * A class that handles the conversion of {@link java.math.BigInteger} attributes to and 037 * from their {@link String} representation. 038 * 039 * @author Thomas Morgner 040 */ 041 public class BigIntegerValueConverter implements ValueConverter 042 { 043 044 /** 045 * Creates a new value converter. 046 */ 047 public BigIntegerValueConverter () 048 { 049 super(); 050 } 051 052 /** 053 * Converts the attribute to a string. 054 * 055 * @param o the attribute ({@link java.math.BigInteger} expected). 056 * @return A string representing the {@link java.math.BigInteger} value. 057 */ 058 public String toAttributeValue (final Object o) 059 { 060 if (o instanceof Integer) 061 { 062 return o.toString(); 063 } 064 throw new ClassCastException("Give me a real type."); 065 } 066 067 /** 068 * Converts a string to a {@link java.math.BigInteger}. 069 * 070 * @param s the string. 071 * @return a {@link java.math.BigInteger}. 072 */ 073 public Object toPropertyValue (final String s) 074 { 075 return new BigInteger(s); 076 } 077 }