Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
Arguments |
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2.0;2 |
1 | /* |
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2 | * Copyright 2011-2012 smartics, Kronseder & Reiner GmbH |
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3 | * |
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4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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5 | * you may not use this file except in compliance with the License. |
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6 | * You may obtain a copy of the License at |
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7 | * |
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8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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9 | * |
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10 | * Unless required by applicable law or agreed to in writing, software |
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11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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13 | * See the License for the specific language governing permissions and |
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14 | * limitations under the License. |
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15 | */ |
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16 | package de.smartics.util.lang; |
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17 | ||
18 | import org.apache.commons.lang.StringUtils; |
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19 | ||
20 | /** |
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21 | * Utility class to check arguments. |
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22 | */ |
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23 | public final class Arguments |
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24 | { |
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25 | // ********************************* Fields ********************************* |
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26 | ||
27 | // --- constants ------------------------------------------------------------ |
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28 | ||
29 | // --- members -------------------------------------------------------------- |
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30 | ||
31 | // ****************************** Initializer ******************************* |
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32 | ||
33 | // ****************************** Constructors ****************************** |
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34 | ||
35 | /** |
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36 | * Utility class pattern. |
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37 | */ |
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38 | private Arguments() |
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39 | 0 | { |
40 | 0 | } |
41 | ||
42 | // ****************************** Inner Classes ***************************** |
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43 | ||
44 | // ********************************* Methods ******************************** |
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45 | ||
46 | // --- init ----------------------------------------------------------------- |
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47 | ||
48 | // --- get&set -------------------------------------------------------------- |
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49 | ||
50 | // --- business ------------------------------------------------------------- |
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51 | ||
52 | /** |
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53 | * Checks if {@code value} is <code>null</code>. |
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54 | * |
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55 | * @param name the name of the argument of error reporting. Not used if no |
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56 | * exception is thrown. May be <code>null</code>, although not |
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57 | * recommended. |
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58 | * @param value the value of the argument to check to be not <code>null</code> |
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59 | * . |
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60 | * @throws NullPointerException if {@code value} is <code>null</code>. |
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61 | */ |
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62 | public static void checkNotNull(final String name, final Object value) |
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63 | throws NullPointerException |
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64 | { |
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65 | 0 | checkNotNull(name, value, null); |
66 | 0 | } |
67 | ||
68 | /** |
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69 | * Checks if {@code value} is <code>null</code> providing an additional |
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70 | * message. |
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71 | * |
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72 | * @param name the name of the argument of error reporting. Not used if no |
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73 | * exception is thrown. May be <code>null</code>, although not |
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74 | * recommended. |
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75 | * @param value the value of the argument to check to be not <code>null</code> |
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76 | * . |
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77 | * @param message the message to pass to the exception as additional |
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78 | * information to the standard message being generated. |
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79 | * @throws NullPointerException if {@code value} is <code>null</code>. |
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80 | */ |
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81 | public static void checkNotNull(final String name, final Object value, |
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82 | final String message) throws NullPointerException |
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83 | { |
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84 | 0 | if (value == null) |
85 | { |
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86 | 0 | throw new NullArgumentException(name, message); |
87 | } |
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88 | 0 | } |
89 | ||
90 | /** |
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91 | * Checks if {@code value} is blank. |
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92 | * |
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93 | * @param name the name of the argument of error reporting. Not used if no |
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94 | * exception is thrown. May be <code>null</code>, although not |
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95 | * recommended. |
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96 | * @param value the value of the argument to check to be not blank. |
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97 | * @throws BlankArgumentException if {@code value} is blank. |
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98 | */ |
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99 | public static void checkNotBlank(final String name, final String value) |
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100 | throws BlankArgumentException |
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101 | { |
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102 | 0 | checkNotBlank(name, value, null); |
103 | 0 | } |
104 | ||
105 | /** |
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106 | * Checks if {@code value} is blank providing an additional message. |
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107 | * |
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108 | * @param name the name of the argument of error reporting. Not used if no |
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109 | * exception is thrown. May be <code>null</code>, although not |
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110 | * recommended. |
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111 | * @param value the value of the argument to check to be not blank. |
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112 | * @param message the message to pass to the exception as additional |
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113 | * information to the standard message being generated. |
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114 | * @throws BlankArgumentException if {@code value} is blank. |
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115 | */ |
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116 | public static void checkNotBlank(final String name, final String value, |
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117 | final String message) throws BlankArgumentException |
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118 | { |
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119 | 0 | if (StringUtils.isBlank(value)) |
120 | { |
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121 | 0 | throw new BlankArgumentException(name, message); |
122 | } |
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123 | 0 | } |
124 | ||
125 | /** |
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126 | * Checks if {@code value} is blank except <code>null</code>. |
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127 | * |
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128 | * @param name the name of the argument of error reporting. Not used if no |
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129 | * exception is thrown. May be <code>null</code>, although not |
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130 | * recommended. |
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131 | * @param value the value of the argument to check to be not blank but may be |
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132 | * <code>null</code>. |
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133 | * @throws BlankExceptNullArgumentException if {@code value} is blank and not |
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134 | * <code>null</code>. |
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135 | */ |
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136 | public static void checkNotBlankExceptNull(final String name, |
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137 | final String value) throws BlankExceptNullArgumentException |
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138 | { |
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139 | 0 | checkNotBlankExceptNull(name, value, null); |
140 | 0 | } |
141 | ||
142 | /** |
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143 | * Checks if {@code value} is blank except <code>null</code> providing an |
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144 | * additional message. |
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145 | * |
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146 | * @param name the name of the argument of error reporting. Not used if no |
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147 | * exception is thrown. May be <code>null</code>, although not |
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148 | * recommended. |
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149 | * @param value the value of the argument to check to be not blank but may be |
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150 | * <code>null</code>. |
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151 | * @param message the message to pass to the exception as additional |
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152 | * information to the standard message being generated. |
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153 | * @throws BlankExceptNullArgumentException if {@code value} is blank and not |
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154 | * <code>null</code>. |
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155 | */ |
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156 | public static void checkNotBlankExceptNull(final String name, |
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157 | final String value, final String message) |
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158 | throws BlankExceptNullArgumentException |
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159 | { |
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160 | 0 | if (value != null && StringUtils.isBlank(value)) |
161 | { |
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162 | 0 | throw new BlankArgumentException(name, message); |
163 | } |
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164 | 0 | } |
165 | // --- object basics -------------------------------------------------------- |
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166 | ||
167 | } |