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HandlerFactory.java
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HandlerFactory.java
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/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2007, 2018 Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2000 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* Portions of this software are based upon public domain software
* originally written at the National Center for Supercomputing Applications,
* University of Illinois, Urbana-Champaign.
*/
package servlet.tck.common.client.handler;
/**
* The HandlerManager is responsible for returning the appropriate handler
* instance based on the provided value.
*/
public class HandlerFactory {
/**
* Content-Type handler name.
*/
private static final String CONTENT_TYPE = "content-type";
/**
* Location handler name.
*/
private static final String LOCATION = "location";
/**
* Set-Cookie handler name.
*/
private static final String SET_COOKIE = "set-cookie";
/**
* ALLOW handler name.
*/
private static final String ALLOW = "allow";
/**
* www-authenticate handler name.
*/
private static final String WWW_AUTH = "www-authenticate";
/*
* public methods
* ========================================================================
*/
/**
* Constructs a new HandlerManager instance
*/
private HandlerFactory() {
}
/**
* Returns the appropriate handler instance based on provided discriminate (a
* header name).
*
* @param handlerName
* handler instance to obtain.
*/
public static Handler getHandler(String handlerName) {
switch (handlerName.toLowerCase()) {
case CONTENT_TYPE:
return ContentTypeHandler.getInstance();
case LOCATION:
return LocationHandler.getInstance();
case SET_COOKIE:
return SetCookieHandler.getInstance();
case WWW_AUTH:
return WWWAuthenticateHandler.getInstance();
case ALLOW:
return ALLOWHandler.getInstance();
default:
return DefaultHandler.getInstance();
}
}
}