/*
 * The MIT License
 * Copyright © 2014-2021 Ilkka Seppälä
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package com.iluwatar.servicelocator;

/**
 * The Service Locator pattern is a design pattern used in software development to encapsulate the
 * processes involved in obtaining a service with a strong abstraction layer. This pattern uses a
 * central registry known as the "service locator", which on request returns the information
 * necessary to perform a certain task.
 *
 * <p>In this example we use the Service locator pattern to lookup JNDI-services and cache them for
 * subsequent requests.
 * <br>
 *
 * @author saifasif
 */
public class App {

  public static final String JNDI_SERVICE_A = "jndi/serviceA";
  public static final String JNDI_SERVICE_B = "jndi/serviceB";

  /**
   * Program entry point.
   *
   * @param args command line args
   */
  public static void main(String[] args) {
    var service = ServiceLocator.getService(JNDI_SERVICE_A);
    service.execute();
    service = ServiceLocator.getService(JNDI_SERVICE_B);
    service.execute();
    service = ServiceLocator.getService(JNDI_SERVICE_A);
    service.execute();
    service = ServiceLocator.getService(JNDI_SERVICE_A);
    service.execute();
  }
}
