content: /*
   * Copyright (C) 2020 ActiveJ LLC.
   *
   * 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 io.activej.common.initializer;
  
  import java.util.List;
  
  /**
   * An initializer of some value
   * <p>
   * Basically, a consumer of some object that should initialize that object
   * <p>
   * This interface is mostly used to initialize objects that follow <i>create().with()</i> pattern
   * which you can find throughout a codebase
   *
   * @param <T> a type of object to be initialized
   */
  @FunctionalInterface
  public interface Initializer<T> {
  	void initialize(T t);
  
  	/**
  	 * Combines multiple initializers into a single initializers that
  	 * initializes an object by calling each given serializer in order
  	 *
  	 * @param initializers an array of initializers to be combined into a single initializer
  	 * @param <T>          a type of object to be initialized
  	 * @return a combined initializer
  	 */
  	@SuppressWarnings({"unchecked", "rawtypes"})
  	@SafeVarargs
  	static <T> Initializer<T> combine(Initializer<? super T>... initializers) {
  		return combine((List) List.of((Initializer[]) initializers));
  	}
  
  	/**
  	 * Combines multiple initializers into a single initializers that
  	 * initializes an object by calling each given serializer in order
  	 *
  	 * @param initializers an iterable of initializers to be combined into a single initializer
  	 * @param <T>          a type of object to be initialized
  	 * @return a combined initializer
  	 */
  	static <T> Initializer<T> combine(Iterable<? extends Initializer<? super T>> initializers) {
  		return target -> initializers.forEach(initializer -> initializer.initialize(target));
  	}
  }
  