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org.apache.turbine.services.intake.model.BigDecimalField |
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1 | package org.apache.turbine.services.intake.model; |
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2 | ||
3 | /* |
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4 | * Copyright 2001-2005 The Apache Software Foundation. |
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5 | * |
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6 | * Licensed under the Apache License, Version 2.0 (the "License") |
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7 | * you may not use this file except in compliance with the License. |
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8 | * You may obtain a copy of the License at |
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9 | * |
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10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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11 | * |
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12 | * Unless required by applicable law or agreed to in writing, software |
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13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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15 | * See the License for the specific language governing permissions and |
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16 | * limitations under the License. |
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17 | */ |
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18 | ||
19 | import java.math.BigDecimal; |
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20 | ||
21 | import java.text.DecimalFormatSymbols; |
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22 | ||
23 | import org.apache.commons.lang.StringUtils; |
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24 | ||
25 | import org.apache.turbine.services.intake.IntakeException; |
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26 | import org.apache.turbine.services.intake.validator.BigDecimalValidator; |
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27 | import org.apache.turbine.services.intake.xmlmodel.XmlField; |
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28 | ||
29 | /** |
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30 | * @author <a href="mailto:jmcnally@collab.net">John McNally</a> |
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31 | * @author <a href="mailto:dlr@finemaltcoding.com">Daniel Rall</a> |
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32 | * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a> |
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33 | * @author <a href="mailto:quintonm@bellsouth.net">Quinton McCombs</a> |
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34 | * @version $Id: BigDecimalField.java 264148 2005-08-29 14:21:04Z henning $ |
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35 | */ |
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36 | public class BigDecimalField |
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37 | extends Field |
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38 | { |
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39 | /** |
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40 | * Constructor. |
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41 | * |
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42 | * @param field xml field definition object |
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43 | * @param group xml group definition object |
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44 | * @throws IntakeException thrown by superclass |
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45 | */ |
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46 | public BigDecimalField(XmlField field, Group group) |
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47 | throws IntakeException |
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48 | { |
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49 | 0 | super(field, group); |
50 | 0 | } |
51 | ||
52 | /** |
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53 | * Sets the default value for a BigDecimal field |
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54 | * |
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55 | * @param prop Parameter for the default values |
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56 | */ |
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57 | public void setDefaultValue(String prop) |
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58 | { |
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59 | 0 | defaultValue = null; |
60 | ||
61 | 0 | if (prop == null) |
62 | { |
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63 | 0 | return; |
64 | } |
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65 | ||
66 | 0 | defaultValue = new BigDecimal(prop); |
67 | 0 | } |
68 | ||
69 | /** |
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70 | * Set the empty Value. This value is used if Intake |
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71 | * maps a field to a parameter returned by the user and |
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72 | * the corresponding field is either empty (empty string) |
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73 | * or non-existant. |
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74 | * |
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75 | * @param prop The value to use if the field is empty. |
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76 | */ |
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77 | public void setEmptyValue(String prop) |
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78 | { |
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79 | 0 | emptyValue = null; |
80 | ||
81 | 0 | if (prop == null) |
82 | { |
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83 | 0 | return; |
84 | } |
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85 | ||
86 | 0 | emptyValue = new BigDecimal(prop); |
87 | 0 | } |
88 | ||
89 | /** |
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90 | * A suitable validator. |
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91 | * |
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92 | * @return A suitable validator |
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93 | */ |
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94 | protected String getDefaultValidator() |
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95 | { |
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96 | 0 | return BigDecimalValidator.class.getName(); |
97 | } |
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98 | ||
99 | /** |
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100 | * Sets the value of the field from data in the parser. |
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101 | */ |
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102 | protected void doSetValue() |
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103 | { |
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104 | 0 | if (isMultiValued) |
105 | { |
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106 | 0 | String[] inputs = parser.getStrings(getKey()); |
107 | 0 | BigDecimal[] values = new BigDecimal[inputs.length]; |
108 | 0 | for (int i = 0; i < inputs.length; i++) |
109 | { |
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110 | 0 | values[i] = StringUtils.isNotEmpty(inputs[i]) |
111 | ? canonicalizeDecimalInput(inputs[i]) : (BigDecimal) getEmptyValue(); |
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112 | } |
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113 | 0 | setTestValue(values); |
114 | } |
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115 | else |
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116 | { |
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117 | 0 | String val = parser.getString(getKey()); |
118 | 0 | setTestValue(StringUtils.isNotEmpty(val) ? canonicalizeDecimalInput(val) : (BigDecimal) getEmptyValue()); |
119 | } |
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120 | 0 | } |
121 | ||
122 | /** |
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123 | * Canonicalizes an user-inputted <code>BigDecimal</code> string |
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124 | * to the system's internal format. |
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125 | * |
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126 | * @param bigDecimal Text conforming to a <code>BigDecimal</code> |
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127 | * description for a set of <code>DecimalFormatSymbols</code>. |
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128 | * @return The canonicalized representation. |
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129 | */ |
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130 | protected final BigDecimal canonicalizeDecimalInput(String bigDecimal) |
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131 | { |
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132 | 0 | if (getLocale() != null) |
133 | { |
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134 | 0 | DecimalFormatSymbols internal = new DecimalFormatSymbols(); |
135 | 0 | DecimalFormatSymbols user = new DecimalFormatSymbols(getLocale()); |
136 | ||
137 | 0 | if (!internal.equals(user)) |
138 | { |
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139 | 0 | bigDecimal = bigDecimal.replace(user.getDecimalSeparator(), |
140 | internal.getDecimalSeparator()); |
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141 | } |
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142 | } |
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143 | 0 | return new BigDecimal(bigDecimal); |
144 | } |
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145 | } |
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