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org.apache.commons.validator.util.ValidatorUtils |
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1 | /* |
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2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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3 | * contributor license agreements. See the NOTICE file distributed with |
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4 | * this work for additional information regarding copyright ownership. |
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5 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
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6 | * (the "License"); you may not use this file except in compliance with |
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7 | * the License. You may obtain a copy of the License at |
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8 | * |
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9 | * http://www.apache.org/licenses/LICENSE-2.0 |
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10 | * |
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11 | * Unless required by applicable law or agreed to in writing, software |
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12 | * distributed under the License is distributed on an "AS IS" BASIS, |
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13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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14 | * See the License for the specific language governing permissions and |
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15 | * limitations under the License. |
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16 | */ |
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17 | package org.apache.commons.validator.util; |
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18 | ||
19 | import java.lang.reflect.InvocationTargetException; |
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20 | import java.util.Collection; |
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21 | import java.util.HashMap; |
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22 | import java.util.Iterator; |
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23 | import java.util.Map; |
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24 | ||
25 | import org.apache.commons.beanutils.PropertyUtils; |
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26 | import org.apache.commons.collections.FastHashMap; |
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27 | import org.apache.commons.logging.Log; |
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28 | import org.apache.commons.logging.LogFactory; |
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29 | import org.apache.commons.validator.Arg; |
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30 | import org.apache.commons.validator.Msg; |
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31 | import org.apache.commons.validator.Var; |
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32 | ||
33 | /** |
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34 | * Basic utility methods. |
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35 | * <p> |
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36 | * The use of FastHashMap is deprecated and will be replaced in a future |
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37 | * release. |
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38 | * </p> |
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39 | * |
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40 | * @version $Revision: 478334 $ $Date: 2006-11-22 21:31:54 +0000 (Wed, 22 Nov 2006) $ |
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41 | */ |
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42 | 0 | public class ValidatorUtils { |
43 | ||
44 | /** |
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45 | * <p>Replace part of a <code>String</code> with another value.</p> |
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46 | * |
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47 | * @param value <code>String</code> to perform the replacement on. |
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48 | * @param key The name of the constant. |
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49 | * @param replaceValue The value of the constant. |
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50 | * |
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51 | * @return The modified value. |
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52 | */ |
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53 | public static String replace(String value, String key, String replaceValue) { |
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54 | ||
55 | 180 | if (value == null || key == class="keyword">null || replaceValue == class="keyword">null) { |
56 | 0 | return value; |
57 | } |
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58 | ||
59 | 180 | int pos = value.indexOf(key); |
60 | ||
61 | 180 | if (pos < 0) { |
62 | 140 | return value; |
63 | } |
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64 | ||
65 | 40 | int length = value.length(); |
66 | 40 | int start = pos; |
67 | 40 | int end = pos + key.length(); |
68 | ||
69 | 40 | if (length == key.length()) { |
70 | 40 | value = replaceValue; |
71 | ||
72 | 0 | } else if (end == length) { |
73 | 0 | value = value.substring(0, start) + replaceValue; |
74 | ||
75 | } else { |
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76 | 0 | value = |
77 | value.substring(0, start) |
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78 | + replaceValue |
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79 | + replace(value.substring(end), key, replaceValue); |
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80 | } |
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81 | ||
82 | 40 | return value; |
83 | } |
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84 | ||
85 | /** |
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86 | * Convenience method for getting a value from a bean property as a |
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87 | * <code>String</code>. If the property is a <code>String[]</code> or |
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88 | * <code>Collection</code> and it is empty, an empty <code>String</code> |
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89 | * "" is returned. Otherwise, property.toString() is returned. This method |
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90 | * may return <code>null</code> if there was an error retrieving the |
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91 | * property. |
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92 | * |
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93 | * @param bean The bean object. |
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94 | * @param property The name of the property to access. |
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95 | * |
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96 | * @return The value of the property. |
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97 | */ |
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98 | public static String getValueAsString(Object bean, String property) { |
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99 | 175 | Object value = null; |
100 | ||
101 | try { |
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102 | 175 | value = PropertyUtils.getProperty(bean, property); |
103 | ||
104 | 175 | } catch(IllegalAccessException e) { |
105 | 0 | Log log = LogFactory.getLog(ValidatorUtils.class); |
106 | 0 | log.error(e.getMessage(), e); |
107 | 0 | } catch(InvocationTargetException e) { |
108 | 0 | Log log = LogFactory.getLog(ValidatorUtils.class); |
109 | 0 | log.error(e.getMessage(), e); |
110 | 0 | } catch(NoSuchMethodException e) { |
111 | 0 | Log log = LogFactory.getLog(ValidatorUtils.class); |
112 | 0 | log.error(e.getMessage(), e); |
113 | } |
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114 | ||
115 | 175 | if (value == null) { |
116 | 34 | return null; |
117 | } |
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118 | ||
119 | 141 | if (value instanceof String[]) { |
120 | 0 | return ((String[]) value).length > 0 ? value.toString() : ""; |
121 | ||
122 | 141 | } else if (value instanceof Collection) { |
123 | 0 | return ((Collection) value).isEmpty() ? "" : value.toString(); |
124 | ||
125 | } else { |
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126 | 141 | return value.toString(); |
127 | } |
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128 | ||
129 | } |
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130 | ||
131 | /** |
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132 | * Makes a deep copy of a <code>FastHashMap</code> if the values |
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133 | * are <code>Msg</code>, <code>Arg</code>, |
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134 | * or <code>Var</code>. Otherwise it is a shallow copy. |
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135 | * |
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136 | * @param map <code>FastHashMap</code> to copy. |
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137 | * @return FastHashMap A copy of the <code>FastHashMap</code> that was |
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138 | * passed in. |
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139 | * @deprecated This method is not part of Validator's public API. Validator |
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140 | * will use it internally until FastHashMap references are removed. Use |
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141 | * copyMap() instead. |
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142 | */ |
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143 | public static FastHashMap copyFastHashMap(FastHashMap map) { |
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144 | 0 | FastHashMap results = new FastHashMap(); |
145 | ||
146 | 0 | Iterator i = map.keySet().iterator(); |
147 | 0 | while (i.hasNext()) { |
148 | 0 | String key = (String) i.next(); |
149 | 0 | Object value = map.get(key); |
150 | ||
151 | 0 | if (value instanceof Msg) { |
152 | 0 | results.put(key, ((Msg) value).clone()); |
153 | 0 | } else if (value instanceof Arg) { |
154 | 0 | results.put(key, ((Arg) value).clone()); |
155 | 0 | } else if (value instanceof Var) { |
156 | 0 | results.put(key, ((Var) value).clone()); |
157 | } else { |
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158 | 0 | results.put(key, value); |
159 | } |
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160 | } |
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161 | ||
162 | 0 | results.setFast(true); |
163 | 0 | return results; |
164 | } |
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165 | ||
166 | /** |
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167 | * Makes a deep copy of a <code>Map</code> if the values are |
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168 | * <code>Msg</code>, <code>Arg</code>, or <code>Var</code>. Otherwise, |
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169 | * it is a shallow copy. |
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170 | * |
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171 | * @param map The source Map to copy. |
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172 | * |
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173 | * @return A copy of the <code>Map</code> that was passed in. |
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174 | */ |
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175 | public static Map copyMap(Map map) { |
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176 | 0 | Map results = new HashMap(); |
177 | ||
178 | 0 | Iterator iter = map.keySet().iterator(); |
179 | 0 | while (iter.hasNext()) { |
180 | 0 | String key = (String) iter.next(); |
181 | 0 | Object value = map.get(key); |
182 | ||
183 | 0 | if (value instanceof Msg) { |
184 | 0 | results.put(key, ((Msg) value).clone()); |
185 | 0 | } else if (value instanceof Arg) { |
186 | 0 | results.put(key, ((Arg) value).clone()); |
187 | 0 | } else if (value instanceof Var) { |
188 | 0 | results.put(key, ((Var) value).clone()); |
189 | } else { |
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190 | 0 | results.put(key, value); |
191 | } |
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192 | } |
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193 | 0 | return results; |
194 | } |
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195 | ||
196 | } |
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