| Line | Hits | Source |
|---|---|---|
| 1 | /* | |
| 2 | Chrysalis Web Framework [http://chrysalis.sourceforge.net] | |
| 3 | Copyright (c) 2002, 2003, 2004, Paul Strack | |
| 4 | ||
| 5 | All rights reserved. | |
| 6 | ||
| 7 | Redistribution and use in source and binary forms, with or without | |
| 8 | modification, are permitted provided that the following conditions are met: | |
| 9 | ||
| 10 | 1. Redistributions of source code must retain the above copyright notice, this | |
| 11 | list of conditions and the following disclaimer. | |
| 12 | ||
| 13 | 2. Redistributions in binary form must reproduce the above copyright notice, | |
| 14 | this list of conditions and the following disclaimer in the documentation | |
| 15 | and/or other materials provided with the distribution. | |
| 16 | ||
| 17 | 3. Neither the name of the copyright holder nor the names of its contributors | |
| 18 | may be used to endorse or promote products derived from this software without | |
| 19 | specific prior written permission. | |
| 20 | ||
| 21 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND | |
| 22 | ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
| 23 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 24 | DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR | |
| 25 | ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
| 26 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 27 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | |
| 28 | ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 29 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 30 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 31 | */ | |
| 32 | ||
| 33 | package org.chwf.converter; | |
| 34 | ||
| 35 | import java.util.HashMap; | |
| 36 | import java.util.Iterator; | |
| 37 | import java.util.Map; | |
| 38 | ||
| 39 | import org.chwf.config.Config; | |
| 40 | import org.chwf.config.ConfigFactory; | |
| 41 | ||
| 42 | /** | |
| 43 | * Converter class. It is the superclass for more specific converters. | |
| 44 | * | |
| 45 | * @author <a href="mailto:pfstrack@users.sourceforge.net">Paul Strack</a> | |
| 46 | */ | |
| 47 | 2 | public abstract class Converter { |
| 48 | ||
| 49 | /** Default converter. */ | |
| 50 | 2 | private static final DefaultConverter DEFAULT_CONVERTER = |
| 51 | new DefaultConverter(); | |
| 52 | ||
| 53 | /** Key for converter config map. */ | |
| 54 | private static final String CONVERTER_CONFIG_MAP_KEY = "datatype"; | |
| 55 | ||
| 56 | /** Map containing all predefined converters. */ | |
| 57 | 1 | private static final Map CONVERTER_MAP = initConvertersMap(); |
| 58 | ||
| 59 | /** The converter's datatype. */ | |
| 60 | private String type; | |
| 61 | ||
| 62 | /** | |
| 63 | * Initialize converter map from configuration. | |
| 64 | * | |
| 65 | * @return The converter map. | |
| 66 | * @throws ConversionConfigurationException If there is a problem with the | |
| 67 | * converter configuration. | |
| 68 | */ | |
| 69 | private static Map initConvertersMap() | |
| 70 | throws ConversionConfigurationException { | |
| 71 | 1 | Map converters = new HashMap(); |
| 72 | 1 | addConverters(converters, ConfigFactory.getConfig(DefaultConverter.class)); |
| 73 | 1 | addConverters(converters, ConfigFactory.getConfig(Converter.class)); |
| 74 | 1 | return converters; |
| 75 | } | |
| 76 | ||
| 77 | /** | |
| 78 | * Add converters to the given map from the configuration. | |
| 79 | * | |
| 80 | * @param converters The converter map. | |
| 81 | * @param config The configuration to retrieve converter information. | |
| 82 | */ | |
| 83 | private static void addConverters(Map converters, Config config) { | |
| 84 | 2 | Map converterConfig = config.getMap(CONVERTER_CONFIG_MAP_KEY); |
| 85 | 2 | Iterator i = converterConfig.keySet().iterator(); |
| 86 | try { | |
| 87 | 33 | while (i.hasNext()) { |
| 88 | 29 | String type = i.next().toString(); |
| 89 | 29 | String converterName = converterConfig.get(type).toString(); |
| 90 | 29 | Converter converter = |
| 91 | (Converter) Class.forName(converterName).newInstance(); | |
| 92 | 29 | converter.type = type; |
| 93 | 29 | converters.put(type, converter); |
| 94 | } | |
| 95 | 2 | } catch (Exception ex) { |
| 96 | 0 | throw new ConversionConfigurationException(ex); |
| 97 | } | |
| 98 | 2 | } |
| 99 | ||
| 100 | /** | |
| 101 | * Factory method that gets the converter for the given data type. This | |
| 102 | * methods uses one of the following:<p> | |
| 103 | * | |
| 104 | * <ul> | |
| 105 | * <li>The converter class specified in <b>Converter.properties</b>.</li> | |
| 106 | * <li>A {@link org.chwf.converter.DefaultConverter}.</li> | |
| 107 | * </ul><p> | |
| 108 | * | |
| 109 | * @param type The class being converted. | |
| 110 | * @return The converter for the class. | |
| 111 | */ | |
| 112 | public static Converter getConverter(Class type) { | |
| 113 | 140 | return getConverter(type.getName()); |
| 114 | } | |
| 115 | ||
| 116 | /** | |
| 117 | * Factory method that gets the converter for the given data type. This | |
| 118 | * methods uses one of the following:<p> | |
| 119 | * | |
| 120 | * <ul> | |
| 121 | * <li>The converter class specified in <b>Converter.properties</b>.</li> | |
| 122 | * <li>A {@link org.chwf.converter.DefaultConverter}.</li> | |
| 123 | * </ul><p> | |
| 124 | * | |
| 125 | * @param type The datatype being converted. | |
| 126 | * @return The converter for the datatype. | |
| 127 | */ | |
| 128 | public static Converter getConverter(String type) { | |
| 129 | 252 | Converter converter = (Converter) CONVERTER_MAP.get(type); |
| 130 | 252 | if (converter != null) { |
| 131 | 218 | return converter; |
| 132 | } else { | |
| 133 | 34 | return DEFAULT_CONVERTER; |
| 134 | } | |
| 135 | } | |
| 136 | ||
| 137 | /** | |
| 138 | * Utility method that converts the object to a string using the converter | |
| 139 | * for its class.<p> | |
| 140 | * | |
| 141 | * @param object The object. | |
| 142 | * @return The string value of the object. | |
| 143 | */ | |
| 144 | public static String convert(Object object) { | |
| 145 | 36 | if (object == null) { |
| 146 | 0 | return null; |
| 147 | } else { | |
| 148 | 36 | return getConverter(object.getClass()).format(object); |
| 149 | } | |
| 150 | } | |
| 151 | ||
| 152 | /** No-op constructor.<p> */ | |
| 153 | 30 | protected Converter() { |
| 154 | 30 | } |
| 155 | ||
| 156 | /** | |
| 157 | * Parse the string value to the conversion type. Supported only for simple | |
| 158 | * datatypes.<p> | |
| 159 | * | |
| 160 | * @param value The value being parsed. | |
| 161 | * @return The resulting object. | |
| 162 | * @throws ConversionException If parsing fails. | |
| 163 | */ | |
| 164 | public abstract Object parse(String value) throws ConversionException; | |
| 165 | ||
| 166 | /** | |
| 167 | * Format the conversion type as a string.<p> | |
| 168 | * | |
| 169 | * @param value The value being format. | |
| 170 | * @return The resulting string. | |
| 171 | */ | |
| 172 | public abstract String format(Object value); | |
| 173 | ||
| 174 | /** | |
| 175 | * The converter's datatype, or <code>null</code> if the type is unknown.<p> | |
| 176 | * | |
| 177 | * @return The converter's datatype. | |
| 178 | */ | |
| 179 | public String getType() { | |
| 180 | 33 | return this.type; |
| 181 | } | |
| 182 | ||
| 183 | /** | |
| 184 | * Returns true if the converted type is simple. If the type is not simple, | |
| 185 | * then the <code>parse()</code> method will not function. Any type that | |
| 186 | * uses the <code>DefaultConverter</code> is by definition not simple.<p> | |
| 187 | * | |
| 188 | * @return true if the converted type is simple. | |
| 189 | */ | |
| 190 | public boolean isSimpleType() { | |
| 191 | 93 | return true; |
| 192 | } | |
| 193 | } |
|
this report was generated by version 1.0.5 of jcoverage. |
copyright © 2003, jcoverage ltd. all rights reserved. |