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1 /**
2  * Copyright (C) 2006 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;
18
19 import java.lang.reflect.Member JavaDoc;
20
21 /**
22  * Context of the current injection.
23  *
24  * @author crazybob@google.com (Bob Lee)
25  */
26 interface Context {
27
28   /**
29    * Gets the {@link Injector}.
30    */
31   Injector getInjector();
32
33   /**
34    * Gets the field, method or constructor which is being injected. Returns
35    * {@code null} if the object isn't being injected into anywhere (i.e. it's
36    * preloaded, returned from {@link Provider#get()}, etc.).
37    */
38   Member JavaDoc getMember();
39
40   /**
41    * Gets the index of the parameter which is being injected. Returns {@code -1}
42    * if a parameter isn't being injected.
43    */
44   int getParameterIndex();
45
46   /**
47    * Gets the binding key for the object currently being retrieved.
48    */
49   Key<?> getKey();
50 }
51
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