Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
FormatTranslator |
|
| 1.3636363636363635;1.364 |
1 | // Copyright 2005 The Apache Software Foundation | |
2 | // | |
3 | // Licensed under the Apache License, Version 2.0 (the "License"); | |
4 | // you may not use this file except in compliance with the License. | |
5 | // You may obtain a copy of the License at | |
6 | // | |
7 | // http://www.apache.org/licenses/LICENSE-2.0 | |
8 | // | |
9 | // Unless required by applicable law or agreed to in writing, software | |
10 | // distributed under the License is distributed on an "AS IS" BASIS, | |
11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 | // See the License for the specific language governing permissions and | |
13 | // limitations under the License. | |
14 | ||
15 | package org.apache.tapestry.form.translator; | |
16 | ||
17 | import org.apache.hivemind.HiveMind; | |
18 | import org.apache.hivemind.util.PropertyUtils; | |
19 | import org.apache.tapestry.form.IFormComponent; | |
20 | import org.apache.tapestry.form.ValidationMessages; | |
21 | import org.apache.tapestry.valid.ValidationConstraint; | |
22 | import org.apache.tapestry.valid.ValidatorException; | |
23 | ||
24 | import java.text.Format; | |
25 | import java.text.ParseException; | |
26 | import java.util.Locale; | |
27 | ||
28 | /** | |
29 | * Abstract {@link Translator} implementation for {@link java.text.Format}-based translators. | |
30 | * | |
31 | * @author Paul Ferraro | |
32 | * @since 4.0 | |
33 | */ | |
34 | public abstract class FormatTranslator extends AbstractTranslator | |
35 | { | |
36 | private String _pattern; | |
37 | ||
38 | public FormatTranslator() | |
39 | 0 | { |
40 | 0 | _pattern = defaultPattern(); |
41 | 0 | } |
42 | ||
43 | //TODO: Needed until HIVEMIND-134 fix is available | |
44 | public FormatTranslator(String initializer) | |
45 | 0 | { |
46 | 0 | PropertyUtils.configureProperties(this, initializer); |
47 | ||
48 | 0 | if (HiveMind.isBlank(_pattern)) |
49 | { | |
50 | 0 | _pattern = defaultPattern(); |
51 | } | |
52 | 0 | } |
53 | ||
54 | protected abstract String defaultPattern(); | |
55 | ||
56 | /** | |
57 | * @see org.apache.tapestry.form.translator.AbstractTranslator#formatObject(org.apache.tapestry.form.IFormComponent, | |
58 | * Locale, java.lang.Object) | |
59 | */ | |
60 | protected String formatObject(IFormComponent field, Locale locale, Object object) | |
61 | { | |
62 | // Get a new format each time, because (a) have to account for locale and (b) formatters are | |
63 | // not thread safe. | |
64 | ||
65 | 0 | Format format = getFormat(locale); |
66 | ||
67 | 0 | return format.format(object); |
68 | } | |
69 | ||
70 | /** | |
71 | * @see org.apache.tapestry.form.translator.AbstractTranslator#parseText(org.apache.tapestry.form.IFormComponent, | |
72 | * ValidationMessages, java.lang.String) | |
73 | */ | |
74 | protected Object parseText(IFormComponent field, ValidationMessages messages, String text) | |
75 | throws ValidatorException | |
76 | { | |
77 | 0 | Format format = getFormat(messages.getLocale()); |
78 | ||
79 | try | |
80 | { | |
81 | 0 | return format.parseObject(text); |
82 | } | |
83 | 0 | catch (ParseException ex) |
84 | { | |
85 | 0 | throw new ValidatorException(buildMessage(messages, field, getMessageKey()), |
86 | getConstraint()); | |
87 | } | |
88 | } | |
89 | ||
90 | protected abstract ValidationConstraint getConstraint(); | |
91 | ||
92 | protected abstract Format getFormat(Locale locale); | |
93 | ||
94 | protected abstract String getMessageKey(); | |
95 | ||
96 | public String getPattern() | |
97 | { | |
98 | 0 | return _pattern; |
99 | } | |
100 | ||
101 | public void setPattern(String pattern) | |
102 | { | |
103 | 0 | _pattern = pattern; |
104 | 0 | } |
105 | ||
106 | /** | |
107 | * Gets the pattern encapsulated by this translator, subclasses may optionally use the | |
108 | * passed in {@link Locale} to return patterns specific to that locale. | |
109 | * | |
110 | * @param locale The locale to use to format the pattern, if applicable. | |
111 | * @return The pattern used to format/parse objects. | |
112 | */ | |
113 | public String getPattern(Locale locale) | |
114 | { | |
115 | 0 | return _pattern; |
116 | } | |
117 | } |