java/dagger/Module.java

/*
 * Copyright (C) 2012 The Dagger Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package dagger;

import dagger.internal.Beta;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * Annotates a class that contributes to the object graph.
 */
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
public @interface Module {
  /**
   * Additional {@code @Module}-annotated classes from which this module is
   * composed. The de-duplicated contributions of the modules in
   * {@code includes}, and of their inclusions recursively, are all contributed
   * to the object graph.
   */
  Class<?>[] includes() default {};

  /**
   * Any {@link Subcomponent}- or {@code @ProductionSubcomponent}-annotated classes which should be
   * children of the component in which this module is installed. A subcomponent may be listed in
   * more than one module in a component.
   *
   * @since 2.7
   */
  @Beta
  Class<?>[] subcomponents() default {};
}