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Java Simplified. Extensions and Useful Constructs for the Java Platform. Codeprimate Elements (a.k.a. cp-elements) is a Java library and micro-framework used to simplify the development of software applications written in Java. Elements packages several APIs into one library in order to address various application concerns and aspects of software design and development collectively and conveniently. Elements is a highly simple, yet robust and proven library built on solid OO principles, software design patterns and best practices to effectively solve common and reoccurring problems in software development.

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/*
 * Copyright 2016 Author or 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 org.cp.elements.lang;

import java.util.Map;

/**
 * The Initializer class is a utility class for performing Object initializations.
 *
 * @author John J. Blum
 * @see org.cp.elements.lang.Initable
 * @see org.cp.elements.lang.ParameterizedInitable
 * @since 1.0.0
 */
@SuppressWarnings("unused")
public abstract class Initializer {

  /**
   * Initializes an Object by calling it's init method if the Object is an instance of the Initable interface.
   *
   * @param initableObj the Object to be initialized.
   * @return a boolean value indicating whether the Object has been initialized.
   * @see org.cp.elements.lang.Initable#init()
   */
  public static boolean init(Object initableObj) {

    if (initableObj instanceof Initable) {
      ((Initable) initableObj).init();
      return true;
    }

    return false;
  }

  /**
   * Initializes an Object by calling it's init method with the array of Object arguments if the Object is an instance
   * of the ParameterizedInitable interface.  Calls the init(:Object) method with no arguments/parameters if the Object
   * is not an instance of the ParameterizedInitable interface.
   *
   * @param initableObj the Object to be initialized.
   * @param args an array of Object arguments used to initialize the Object.
   * @return a boolean value indicating whether the Object has been initialized.
   * @see #init(Object)
   */
  public static boolean init(Object initableObj, Object... args) {

    if (initableObj instanceof ParameterizedInitable) {
      ((ParameterizedInitable) initableObj).init(args);
      return true;
    }

    return init(initableObj);
  }

  /**
   * Initializes an Object by calling it's init method with a Map of parameters if the Object is an instance of the
   * ParameterizedInitable interface.  Calls the init(:Object) method with no arguments/parameters if the Object is not
   * an instance of the ParameterizedInitable interface.
   *
   * @param initableObj the Object to be initialized.
   * @param parameters a Map of parameters used to initialize the Object.
   * @return a boolean value indicating whether the Object has been initialized.
   * @see java.util.Map
   * @see #init(Object)
   */
  public static boolean init(Object initableObj, Map parameters) {

    if (initableObj instanceof ParameterizedInitable) {
      ((ParameterizedInitable) initableObj).init(parameters);
      return true;
    }

    return init(initableObj);
  }
}