/* 
    P/P   *  Method: net.sourceforge.pebble.web.view.ForwardView__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.ForwardView(String)
          * 
          *  Postconditions:
          *    this.uri == uri
          *    init'ed(this.uri)
          */
    34  import javax.servlet.RequestDispatcher;
    35  import javax.servlet.ServletContext;
    36  import javax.servlet.ServletException;
    37  import javax.servlet.http.HttpServletRequest;
    38  import javax.servlet.http.HttpServletResponse;
    39  import java.io.IOException;
    40  
    41  /**
    42   * Represents a JSP forward to another resource.
    43   *
    44   * @author    Simon Brown
    45   */
    46  public class ForwardView extends View {
    47  
    48    private String uri;
    49  
    50    /**
    51     * Creates a new instance with the specified URI.
    52     *
    53     * @param uri   the URI to redirect to
    54     */
    55    public ForwardView(String uri) {
    56      this.uri = uri;
    57    }
    58  
    59    /**
    60     * Gets the URI that this view represents.
    61     *
    62     * @return  the URI as a String
    63     */
           /* 
    P/P     *  Method: String getUri()
            * 
            *  Preconditions:
            *    init'ed(this.uri)
            * 
            *  Postconditions:
            *    return_value == this.uri
            *    init'ed(return_value)
            */
    64    public String getUri() {
    65      return this.uri;
    66    }
    67  
    68    /**
    69     * Gets the title of this view.
    70     *
    71     * @return the title as a String
    72     */
           /* 
    P/P     *  Method: String getContentType()
            * 
            *  Postconditions:
            *    return_value == null
            */
    73    public String getContentType() {
    74      return null;
    75    }
    76  
    77    /**
    78     * Dispatches this view.
    79     *
    80     * @param request  the HttpServletRequest instance
    81     * @param response the HttpServletResponse instance
    82     * @param context
    83     */
    84    public void dispatch(HttpServletRequest request, HttpServletResponse response, ServletContext context) throws ServletException {
    85      try {
               /* 
    P/P         *  Method: void dispatch(HttpServletRequest, HttpServletResponse, ServletContext)
                * 
                *  Preconditions:
                *    context != null
                *    init'ed(this.uri)
                * 
                *  Presumptions:
                *    javax.servlet.ServletContext:getRequestDispatcher(...)@86 != null
                */
    86        RequestDispatcher dispatcher = context.getRequestDispatcher(uri);
    87        dispatcher.forward(request, response);
    88      } catch (IOException ioe) {
    89        throw new ServletException(ioe);
    90      }
    91    }
    92  
    93  }