/* 
    P/P   *  Method: net.sourceforge.pebble.web.view.RedirectView__static_init
          */
     1  /*
     2   * Copyright (c) 2003-2006, Simon Brown
     3   * All rights reserved.
     4   *
     5   * Redistribution and use in source and binary forms, with or without
     6   * modification, are permitted provided that the following conditions are met:
     7   *
     8   *   - Redistributions of source code must retain the above copyright
     9   *     notice, this list of conditions and the following disclaimer.
    10   *
    11   *   - Redistributions in binary form must reproduce the above copyright
    12   *     notice, this list of conditions and the following disclaimer in
    13   *     the documentation and/or other materials provided with the
    14   *     distribution.
    15   *
    16   *   - Neither the name of Pebble nor the names of its contributors may
    17   *     be used to endorse or promote products derived from this software
    18   *     without specific prior written permission.
    19   *
    20   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    21   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    22   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    23   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
    24   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    25   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    26   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    27   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    28   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    29   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    30   * POSSIBILITY OF SUCH DAMAGE.
    31   */
    32  package net.sourceforge.pebble.web.view;
    33  
         /* 
    P/P   *  Method: void net.sourceforge.pebble.web.view.RedirectView(String)
          * 
          *  Postconditions:
          *    this.uri == uri
          *    init'ed(this.uri)
          */
    34  import javax.servlet.ServletContext;
    35  import javax.servlet.ServletException;
    36  import javax.servlet.http.HttpServletRequest;
    37  import javax.servlet.http.HttpServletResponse;
    38  
    39  import net.sourceforge.pebble.util.Utilities;
    40  
    41  import java.io.IOException;
    42  
    43  /**
    44   * Represents a JSP view component and prepares the model for display.
    45   *
    46   * @author    Simon Brown
    47   */
    48  public class RedirectView extends View {
    49  
    50    private String uri;
    51  
    52    /**
    53     * Creates a new instance with the specified URI.
    54     *
    55     * @param uri   the URI to redirect to
    56     */
    57    public RedirectView(String uri) {
    58      this.uri = uri;
    59    }
    60  
    61    /**
    62     * Gets the URI that this view represents.
    63     *
    64     * @return  the URI as a String
    65     */
           /* 
    P/P     *  Method: String getUri()
            * 
            *  Preconditions:
            *    init'ed(this.uri)
            * 
            *  Postconditions:
            *    return_value == this.uri
            *    init'ed(return_value)
            */
    66    public String getUri() {
    67      return this.uri;
    68    }
    69  
    70    /**
    71     * Gets the title of this view.
    72     *
    73     * @return the title as a String
    74     */
           /* 
    P/P     *  Method: String getContentType()
            * 
            *  Postconditions:
            *    return_value == null
            */
    75    public String getContentType() {
    76      return null;
    77    }
    78  
    79    /**
    80     * Dispatches this view.
    81     *
    82     * @param request  the HttpServletRequest instance
    83     * @param response the HttpServletResponse instance
    84     * @param context
    85     */
    86    public void dispatch(HttpServletRequest request, HttpServletResponse response, ServletContext context) throws ServletException {
    87      try {
               /* 
    P/P         *  Method: void dispatch(HttpServletRequest, HttpServletResponse, ServletContext)
                * 
                *  Preconditions:
                *    request != null
                *    response != null
                *    init'ed(this.uri)
                */
    88        String target = Utilities.calcBaseUrl(request.getScheme(), getUri());
    89        response.sendRedirect(target);
    90      } catch (IOException ioe) {
    91        throw new ServletException(ioe);
    92      }
    93    }
    94  
    95  }