1 /*
2 * Copyright (c) 2002-2014, Mairie de Paris
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice
10 * and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice
13 * and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * 3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 *
32 * License 1.0
33 */
34 package fr.paris.lutece.util.beanvalidation;
35
36 import java.util.ArrayList;
37 import java.util.List;
38 import java.util.Locale;
39 import java.util.Set;
40
41 import javax.validation.ConstraintViolation;
42 import javax.validation.Validation;
43 import javax.validation.Validator;
44 import javax.validation.ValidatorFactory;
45
46
47 /**
48 * BeanValidationUtils validates beans using JSR303 annotations.
49 *
50 * @see #validate(Object)
51 */
52 public final class BeanValidationUtil
53 {
54 /**
55 * Validator (JSR 303) is thread safe.
56 */
57 private static final Validator VALIDATOR;
58
59 static
60 {
61 // initialize the validator
62 ValidatorFactory factory = Validation.buildDefaultValidatorFactory( );
63 VALIDATOR = factory.getValidator( );
64 }
65
66 /**
67 * Utility class
68 */
69 private BeanValidationUtil( )
70 {
71 // nothing
72 }
73
74 /**
75 * Validates a bean.
76 *
77 * @param <T> the bean type
78 * @param bean the bean to validate
79 * @return the sets the
80 */
81 public static <T> Set<ConstraintViolation<T>> validate( T bean )
82 {
83 return VALIDATOR.validate( bean );
84 }
85
86 /**
87 * Use this in case you need more than a global validation
88 *
89 * @return the validator
90 */
91 public static Validator getValidator( )
92 {
93 return VALIDATOR;
94 }
95
96 /**
97 * Validate a bean
98 * @param <T> The bean class
99 * @param bean The bean
100 * @param locale The locale
101 * @param strFieldKeysPrefix The fields keys prefix in the resource file
102 * @return A list of errors
103 */
104 public static <T> List<ValidationError> validate( T bean, Locale locale, String strFieldKeysPrefix )
105 {
106 DefaultValidationErrorConfig config = new DefaultValidationErrorConfig( );
107 config.setFieldKeysPrefix( strFieldKeysPrefix );
108
109 return validate( bean, locale, config );
110 }
111
112 /**
113 * Validate a bean
114 * @param <T> The bean class
115 * @param bean The bean
116 * @param locale The locale
117 * @param config The config for validation errors rendering
118 * @return A list of errors
119 */
120 public static <T> List<ValidationError> validate( T bean, Locale locale, ValidationErrorConfig config )
121 {
122 List<ValidationError> list = new ArrayList<ValidationError>( );
123 Set<ConstraintViolation<T>> setViolation = validate( bean );
124
125 for ( ConstraintViolation<T> cv : setViolation )
126 {
127 list.add( new ValidationError( cv, locale, config ) );
128 }
129
130 return list;
131 }
132 }