/**
* The MIT License
* Copyright (c) 2014-2016 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.delegation.simple;
/**
* Delegator Class to delegate the implementation of the Printer.
* This ensures two things:
* - when the actual implementation of the Printer class changes the delegation will still be operational
* - the actual benefit is observed when there are more than one implementors and they share a delegation control
*/
public class PrinterController implements Printer {
private final Printer printer;
public PrinterController(Printer printer) {
this.printer = printer;
}
/**
* This method is implemented from {@link Printer} however instead on providing an
* implementation, it instead calls upon the class passed through the constructor. This is the delegate,
* hence the pattern. Therefore meaning that the caller does not care of the implementing class only the owning
* controller.
*
* @param message to be printed to the screen
*/
@Override
public void print(String message) {
printer.print(message);
}
}