package ca.ubc.cs.spl.aspectPatterns.examples.proxy.java;
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* This file is part of the design patterns project at UBC
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* either http://www.mozilla.org/MPL/ or http://aspectj.org/MPL/.
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is ca.ubc.cs.spl.aspectPatterns.
*
* For more details and the latest version of this code, please see:
* http://www.cs.ubc.ca/labs/spl/projects/aodps.html
*
* Contributor(s):
*/
/**
* Acts as <i>Proxy</i> according to GoF. It implements the
* <code>OutputSubject</code> interface.
*
* @author Jan Hannemann
* @author Gregor Kiczales
* @version 1.1, 02/17/04
*/
public class RequestCounter implements OutputSubject {
/**
* a reference to the <i>Subject</i> (used to forward requests to)
*/
private OutputSubject realSubject;
/**
* An internal counter for the number of calls to <code>
* print(String)</code>.
*/
private int regularRequests = 0;
/**
* Creates a new <code>RequestCounter</code> with the given
* <i>Subject</i>.
*
* @param subject The <i>Subject</i> to forward method calls to
*/
public RequestCounter(OutputSubject subject) {
this.realSubject = subject;
}
/**
* Forwards the request to its subject. We are not interested in
* this kind of request, but must implement the method (and the
* request forwarding) anyway since the method is part of the
* <code>RequestBlocker</code> interface.
*
* @param s the string to print
*/
public void safeRequest(String s) {
realSubject.safeRequest(s);
System.out.println("[RequestCounter:] Not interested in safe " +
"requests, but must implement anyway");
}
/**
* Forwards the request to its subject and prints
* out how many times the <i>request()</i> has been called so far.
*
* @param s the string to print
*/
public void regularRequest(String s) {
regularRequests++;
realSubject.regularRequest(s);
System.out.println("[RequestCounter:] That was regular request nr. " +
regularRequests);
}
/**
* Forwards the request to its subject. We are not interested in
* this kind of request, but must implement the method (and the
* request forwarding) anyway since the method is part of the
* <code>RequestBlocker</code> interface.
*
* @param s the string to print
*/
public void unsafeRequest(String s) {
realSubject.unsafeRequest(s);
System.out.println("[RequestCounter:] Not interested in unsafe requests," +
" but must implement anyway");
}
}