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1 /*
2  * Copyright (C) 2016 The Dagger Authors.
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 dagger.producers;
18 
19 import static java.lang.annotation.ElementType.TYPE;
20 import static java.lang.annotation.RetentionPolicy.RUNTIME;
21 
22 import dagger.Component;
23 import dagger.Module;
24 import dagger.Subcomponent;
25 import java.lang.annotation.Documented;
26 import java.lang.annotation.Retention;
27 import java.lang.annotation.Target;
28 
29 /**
30  * A subcomponent that inherits the bindings from a parent {@link Component}, {@link Subcomponent},
31  * {@link ProductionComponent}, or {@link ProductionSubcomponent}. The details of how to associate a
32  * subcomponent with a parent are described in the documentation for {@link Component}.
33  *
34  * <p>The executor for a production subcomponent is supplied by binding
35  * <code>{@literal @}Production Executor</code>, similar to {@link ProductionComponent}. Note that
36  * this binding may be in an ancestor component.
37  *
38  * @since 2.1
39  */
40 @Retention(RUNTIME) // Allows runtimes to have specialized behavior interoperating with Dagger.
41 @Target(TYPE)
42 @Documented
43 public @interface ProductionSubcomponent {
44   /**
45    * A list of classes annotated with {@link Module} or {@link ProducerModule} whose bindings are
46    * used to generate the subcomponent implementation.  Note that through the use of
47    * {@link Module#includes} or {@link ProducerModule#includes} the full set of modules used to
48    * implement the subcomponent may include more modules that just those listed here.
49    */
modules()50   Class<?>[] modules() default {};
51 
52   /**
53    * A builder for a production subcomponent.
54    *
55    * <p>This follows all the rules of {@link Component.Builder}, except it must appear in classes
56    * annotated with {@link ProductionSubcomponent} instead of {@code Component}.
57    *
58    * <p>If a subcomponent defines a builder, its parent component(s) will have a binding for that
59    * builder type, allowing an instance or {@code Provider} of that builder to be injected or
60    * returned from a method on that component like any other binding.
61    */
62   @Retention(RUNTIME) // Allows runtimes to have specialized behavior interoperating with Dagger.
63   @Target(TYPE)
64   @Documented
65   @interface Builder {}
66 
67   /**
68    * A factory for a production subcomponent.
69    *
70    * <p>This follows all the rules of {@link Component.Factory}, except it must appear in classes
71    * annotated with {@link ProductionSubcomponent} instead of {@code Component}.
72    *
73    * <p>If a subcomponent defines a factory, its parent component(s) will have a binding for that
74    * factory type, allowing an instance that factory to be injected or returned from a method on
75    * that component like any other binding.
76    *
77    * @since 2.22
78    */
79   @Retention(RUNTIME) // Allows runtimes to have specialized behavior interoperating with Dagger.
80   @Target(TYPE)
81   @Documented
82   @interface Factory {}
83 }
84