01: /*
02: * Copyright 2002-2007 the original author or authors.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: */
16:
17: package org.springframework.beans.factory.annotation;
18:
19: import java.lang.annotation.Documented;
20: import java.lang.annotation.ElementType;
21: import java.lang.annotation.Inherited;
22: import java.lang.annotation.Retention;
23: import java.lang.annotation.RetentionPolicy;
24: import java.lang.annotation.Target;
25:
26: /**
27: * This annotation may be used on a field or parameter as a qualifier for
28: * candidate beans when autowiring. It may also be used to annotate other
29: * custom annotations that can then in turn be used as qualifiers.
30: *
31: * @author Mark Fisher
32: * @author Juergen Hoeller
33: * @since 2.5
34: */
35: @Target({ElementType.FIELD,ElementType.PARAMETER,ElementType.TYPE,ElementType.ANNOTATION_TYPE})
36: @Retention(RetentionPolicy.RUNTIME)
37: @Inherited
38: @Documented
39: public @interface Qualifier {
40:
41: String value() default "";
42:
43: }
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