1 /*
2 * Jakarta Bean Validation API
3 *
4 * License: Apache License, Version 2.0
5 * See the license.txt file in the root directory or <http://www.apache.org/licenses/LICENSE-2.0>.
6 */
7 package javax.validation.constraints;
8
9 import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
10 import static java.lang.annotation.ElementType.CONSTRUCTOR;
11 import static java.lang.annotation.ElementType.FIELD;
12 import static java.lang.annotation.ElementType.METHOD;
13 import static java.lang.annotation.ElementType.PARAMETER;
14 import static java.lang.annotation.ElementType.TYPE_USE;
15 import static java.lang.annotation.RetentionPolicy.RUNTIME;
16
17 import java.lang.annotation.Documented;
18 import java.lang.annotation.Repeatable;
19 import java.lang.annotation.Retention;
20 import java.lang.annotation.Target;
21
22 import javax.validation.Constraint;
23 import javax.validation.Payload;
24 import javax.validation.constraints.Pattern.List;
25
26 /**
27 * The annotated {@code CharSequence} must match the specified regular expression.
28 * The regular expression follows the Java regular expression conventions
29 * see {@link java.util.regex.Pattern}.
30 * <p>
31 * Accepts {@code CharSequence}. {@code null} elements are considered valid.
32 *
33 * @author Emmanuel Bernard
34 */
35 @Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER, TYPE_USE })
36 @Retention(RUNTIME)
37 @Repeatable(List.class)
38 @Documented
39 @Constraint(validatedBy = { })
40 public @interface Pattern {
41
42 /**
43 * @return the regular expression to match
44 */
45 String regexp();
46
47 /**
48 * @return array of {@code Flag}s considered when resolving the regular expression
49 */
50 Flag[] flags() default { };
51
52 /**
53 * @return the error message template
54 */
55 String message() default "{javax.validation.constraints.Pattern.message}";
56
57 /**
58 * @return the groups the constraint belongs to
59 */
60 Class<?>[] groups() default { };
61
62 /**
63 * @return the payload associated to the constraint
64 */
65 Class<? extends Payload>[] payload() default { };
66
67 /**
68 * Possible Regexp flags.
69 */
70 public static enum Flag {
71
72 /**
73 * Enables Unix lines mode.
74 *
75 * @see java.util.regex.Pattern#UNIX_LINES
76 */
77 UNIX_LINES( java.util.regex.Pattern.UNIX_LINES ),
78
79 /**
80 * Enables case-insensitive matching.
81 *
82 * @see java.util.regex.Pattern#CASE_INSENSITIVE
83 */
84 CASE_INSENSITIVE( java.util.regex.Pattern.CASE_INSENSITIVE ),
85
86 /**
87 * Permits whitespace and comments in pattern.
88 *
89 * @see java.util.regex.Pattern#COMMENTS
90 */
91 COMMENTS( java.util.regex.Pattern.COMMENTS ),
92
93 /**
94 * Enables multiline mode.
95 *
96 * @see java.util.regex.Pattern#MULTILINE
97 */
98 MULTILINE( java.util.regex.Pattern.MULTILINE ),
99
100 /**
101 * Enables dotall mode.
102 *
103 * @see java.util.regex.Pattern#DOTALL
104 */
105 DOTALL( java.util.regex.Pattern.DOTALL ),
106
107 /**
108 * Enables Unicode-aware case folding.
109 *
110 * @see java.util.regex.Pattern#UNICODE_CASE
111 */
112 UNICODE_CASE( java.util.regex.Pattern.UNICODE_CASE ),
113
114 /**
115 * Enables canonical equivalence.
116 *
117 * @see java.util.regex.Pattern#CANON_EQ
118 */
119 CANON_EQ( java.util.regex.Pattern.CANON_EQ );
120
121 //JDK flag value
122 private final int value;
123
124 private Flag(int value) {
125 this.value = value;
126 }
127
128 /**
129 * @return flag value as defined in {@link java.util.regex.Pattern}
130 */
131 public int getValue() {
132 return value;
133 }
134 }
135
136 /**
137 * Defines several {@link Pattern} annotations on the same element.
138 *
139 * @see Pattern
140 */
141 @Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER, TYPE_USE })
142 @Retention(RUNTIME)
143 @Documented
144 @interface List {
145
146 Pattern[] value();
147 }
148 }
149