1 /**
2  * Copyright (C) 2008 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.spi;
18 
19 import com.google.inject.Binding;
20 import com.google.inject.Key;
21 
22 /**
23  * A binding to a provider key. To resolve injections, the provider key is first resolved, then that
24  * provider's {@code get} method is invoked.
25  *
26  * @author jessewilson@google.com (Jesse Wilson)
27  * @since 2.0
28  */
29 public interface ProviderKeyBinding<T> extends Binding<T> {
30 
31   /**
32    * Returns the key used to resolve the provider's binding. That binding can be retrieved from an
33    * injector using {@link com.google.inject.Injector#getBinding(Key)
34    * Injector.getBinding(providerKey)}
35    */
getProviderKey()36   Key<? extends javax.inject.Provider<? extends T>> getProviderKey();
37 
38 }