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• Rejector.java

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/*******************************************************************************
 * Copyright (c) 2018, TechEmpower, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name TechEmpower, Inc. nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS 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 TECHEMPOWER, INC. 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
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 *******************************************************************************/
package com.techempower.gemini.pyxis.authorization;

import com.techempower.gemini.*;
import com.techempower.gemini.pyxis.*;

/**
 * Encapsulates functionality that should occur when a user is not authorized
 * to perform an action.  An example Rejector is the LoginRedirector, which
 * redirects the user to the Login page when their request is rejected.
 */
public interface Rejector
{

  /**
   * Reject a request to functionality to which the user is not authorized,
   * usually by doing something like a redirect or rendering a message as a
   * response.
   * 
   * @param context The request context.
   * @param user If a user is authenticated, this will be provided; otherwise
   *   this will be null.
   */
  void reject(Context context, PyxisUser user);
  
}