ActionController xref

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    1   /*
    2    * $Id: ActionController.java 471754 2006-11-06 14:55:09Z husted $
    3    *
    4    * Licensed to the Apache Software Foundation (ASF) under one
    5    * or more contributor license agreements.  See the NOTICE file
    6    * distributed with this work for additional information
    7    * regarding copyright ownership.  The ASF licenses this file
    8    * to you under the Apache License, Version 2.0 (the
    9    * "License"); you may not use this file except in compliance
    10   * with the License.  You may obtain a copy of the License at
    11   *
    12   *  http://www.apache.org/licenses/LICENSE-2.0
    13   *
    14   * Unless required by applicable law or agreed to in writing,
    15   * software distributed under the License is distributed on an
    16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    17   * KIND, either express or implied.  See the License for the
    18   * specific language governing permissions and limitations
    19   * under the License.
    20   */
    21
    22  package org.apache.struts.tiles;
    23
    24  import java.io.IOException;
    25
    26  import javax.servlet.ServletContext;
    27  import javax.servlet.ServletException;
    28  import javax.servlet.http.HttpServletRequest;
    29  import javax.servlet.http.HttpServletResponse;
    30
    31  import org.apache.struts.action.Action;
    32
    33  /**
    34   * Struts wrapper implementation of Controller.  This implementation wraps an
    35   * <code>Action</code> in a <code>Controller</code>.
    36   */
    37  public class ActionController implements Controller {
    38
    39      /**
    40       * Struts action wrapped.
    41       */
    42      private Action action = null;
    43
    44      /**
    45       * Constructor.
    46       *
    47       * @param action Action to be wrapped.
    48       */
    49      public ActionController(Action action) {
    50          this.action = action;
    51      }
    52
    53      /**
    54       * Method associated to a tile and called immediately before tile is
    55       * included.  This implementation calls a Struts Action. No servlet is
    56       * set by this method.
    57       *
    58       * @param tileContext    Current tile context.
    59       * @param request        Current request.
    60       * @param response       Current response.
    61       * @param servletContext Current servlet context.
    62       */
    63      public void perform(
    64              ComponentContext tileContext,
    65              HttpServletRequest request,
    66              HttpServletResponse response,
    67              ServletContext servletContext)
    68              throws ServletException, IOException {
    69
    70          try {
    71              action.execute(null, null, request, response);
    72
    73          } catch (Exception e) {
    74              throw new ServletException(e);
    75          }
    76      }
    77
    78      /**
    79       * @see org.apache.struts.tiles.Controller#execute(org.apache.struts.tiles.ComponentContext, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, javax.servlet.ServletContext)
    80       */
    81      public void execute(
    82              ComponentContext tileContext,
    83              HttpServletRequest request,
    84              HttpServletResponse response,
    85              ServletContext servletContext)
    86              throws Exception {
    87
    88          this.action.execute(null, null, request, response);
    89
    90      }
    91  }