1 /*
2 * Grapht, an open source dependency injector.
3 * Copyright 2014-2015 various contributors (see CONTRIBUTORS.txt)
4 * Copyright 2010-2014 Regents of the University of Minnesota
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU Lesser General Public License as
8 * published by the Free Software Foundation; either version 2.1 of the
9 * License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
13 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
14 * details.
15 *
16 * You should have received a copy of the GNU General Public License along with
17 * this program; if not, write to the Free Software Foundation, Inc., 51
18 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 */
20 package org.grouplens.grapht.annotation;
21
22 import java.lang.annotation.*;
23
24 /**
25 * Marks a qualifier annotation as an alias for another qualifier. Useful for deprecating
26 * qualifiers.
27 * <p>
28 * The aliased qualifier (the one bearing this annotation) is treated exactly as the qualifier it
29 * aliases. Aliases are recursive and transitive, and the alias annotations are followed until an
30 * unaliased qualifier is found. Circular alias loops are not allowed.
31 */
32 @Documented
33 @Retention(RetentionPolicy.RUNTIME)
34 @Target(ElementType.ANNOTATION_TYPE)
35 public @interface AliasFor {
36 /**
37 * Get the target of this alias annotation.
38 * @return The annotation for which the annotated annotation is an alias.
39 */
40 Class<? extends Annotation> value();
41 }