1 /**
2  * Copyright (C) 2007 Google Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
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 com.google.inject.assistedinject;
18 
19 import static java.lang.annotation.ElementType.FIELD;
20 import static java.lang.annotation.ElementType.METHOD;
21 import static java.lang.annotation.ElementType.PARAMETER;
22 import static java.lang.annotation.RetentionPolicy.RUNTIME;
23 
24 import com.google.inject.BindingAnnotation;
25 
26 import java.lang.annotation.Retention;
27 import java.lang.annotation.Target;
28 
29 /**
30  * Annotates an injected parameter or field whose value comes from an argument to a factory method.
31  *
32  * @author jmourits@google.com (Jerome Mourits)
33  * @author jessewilson@google.com (Jesse Wilson)
34  */
35 @BindingAnnotation @Target({ FIELD, PARAMETER, METHOD }) @Retention(RUNTIME)
36 public @interface Assisted {
37 
38   /**
39    * The unique name for this parameter. This is matched to the {@literal @Assisted} constructor
40    * parameter with the same value. Names are not necessary when the parameter types are distinct.
41    */
value()42   String value() default "";
43 }