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: ConverterRegistry.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.beans; 032 033 import java.awt.Color; 034 import java.math.BigDecimal; 035 import java.math.BigInteger; 036 import java.util.HashMap; 037 038 public final class ConverterRegistry 039 { 040 private static ConverterRegistry instance; 041 private HashMap registeredClasses; 042 043 public static synchronized ConverterRegistry getInstance () 044 { 045 if (instance == null) 046 { 047 instance = new ConverterRegistry(); 048 } 049 return instance; 050 } 051 052 private ConverterRegistry () 053 { 054 registeredClasses = new HashMap(); 055 registeredClasses.put(BigDecimal.class, new BigDecimalValueConverter()); 056 registeredClasses.put(BigInteger.class, new BigIntegerValueConverter()); 057 registeredClasses.put(Boolean.class, new BooleanValueConverter()); 058 registeredClasses.put(Boolean.TYPE, new BooleanValueConverter()); 059 registeredClasses.put(Byte.class, new ByteValueConverter()); 060 registeredClasses.put(Byte.TYPE, new ByteValueConverter()); 061 registeredClasses.put(Character.class, new CharacterValueConverter()); 062 registeredClasses.put(Character.TYPE, new CharacterValueConverter()); 063 registeredClasses.put(Color.class, new ColorValueConverter()); 064 registeredClasses.put(Double.class, new DoubleValueConverter()); 065 registeredClasses.put(Double.TYPE, new DoubleValueConverter()); 066 registeredClasses.put(Float.class, new FloatValueConverter()); 067 registeredClasses.put(Float.TYPE, new FloatValueConverter()); 068 registeredClasses.put(Integer.class, new IntegerValueConverter()); 069 registeredClasses.put(Integer.TYPE, new IntegerValueConverter()); 070 registeredClasses.put(Long.class, new LongValueConverter()); 071 registeredClasses.put(Long.TYPE, new LongValueConverter()); 072 registeredClasses.put(Short.class, new ShortValueConverter()); 073 registeredClasses.put(Short.TYPE, new ShortValueConverter()); 074 registeredClasses.put(String.class, new StringValueConverter()); 075 registeredClasses.put(Number.class, new BigDecimalValueConverter()); 076 registeredClasses.put(Class.class, new ClassValueConverter()); 077 } 078 079 public ValueConverter getValueConverter (final Class c) 080 { 081 final ValueConverter plain = (ValueConverter) registeredClasses.get(c); 082 if (plain != null) 083 { 084 return plain; 085 } 086 if (c.isArray()) 087 { 088 final Class componentType = c.getComponentType(); 089 final ValueConverter componentConverter = getValueConverter(componentType); 090 if (componentConverter != null) 091 { 092 return new ArrayValueConverter(componentType, componentConverter); 093 } 094 } 095 return null; 096 } 097 098 /** 099 * Converts an object to an attribute value. 100 * 101 * @param o the object. 102 * @return the attribute value. 103 * @throws BeanException if there was an error during the conversion. 104 */ 105 public static String toAttributeValue (final Object o) throws BeanException 106 { 107 if (o == null) 108 { 109 return null; 110 } 111 final ValueConverter vc = 112 ConverterRegistry.getInstance().getValueConverter(o.getClass()); 113 if (vc == null) 114 { 115 return null; 116 } 117 return vc.toAttributeValue(o); 118 } 119 120 /** 121 * Converts a string to a property value. 122 * 123 * @param s the string. 124 * @return a property value. 125 * @throws BeanException if there was an error during the conversion. 126 */ 127 public static Object toPropertyValue (final String s, final Class c) throws BeanException 128 { 129 if (s == null) 130 { 131 return null; 132 } 133 final ValueConverter vc = 134 ConverterRegistry.getInstance().getValueConverter(c); 135 if (vc == null) 136 { 137 return null; 138 } 139 return vc.toPropertyValue(s); 140 } 141 142 }