SelectAction xref

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    1   /*
    2    * $Id: SelectAction.java 508312 2007-02-16 04:56:54Z pbenedict $
    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  package org.apache.struts.chain.commands.servlet;
    22
    23  import org.apache.struts.chain.Constants;
    24  import org.apache.struts.chain.commands.AbstractSelectAction;
    25  import org.apache.struts.chain.contexts.ActionContext;
    26  import org.apache.struts.chain.contexts.ServletActionContext;
    27  import org.apache.struts.config.ModuleConfig;
    28
    29  import javax.servlet.http.HttpServletRequest;
    30
    31  /**
    32   * <p>Cache the <code>ActionConfig</code> instance for the action to be used
    33   * for processing this request.</p>
    34   *
    35   * @version $Rev: 508312 $ $Date: 2005-05-07 12:11:38 -0400 (Sat, 07 May 2005)
    36   *          $
    37   */
    38  public class SelectAction extends AbstractSelectAction {
    39      // ------------------------------------------------------- Protected Methods
    40      protected String getPath(ActionContext context) {
    41          ServletActionContext saContext = (ServletActionContext) context;
    42          HttpServletRequest request = saContext.getRequest();
    43          String path = null;
    44          boolean extension = false;
    45
    46          // For prefix matching, match on the path info
    47          path = (String) request.getAttribute(Constants.INCLUDE_PATH_INFO);
    48
    49          if ((path == null) || (path.length() == 0)) {
    50              path = request.getPathInfo();
    51          }
    52
    53          // For extension matching, match on the servlet path
    54          if ((path == null) || (path.length() == 0)) {
    55              path =
    56                  (String) request.getAttribute(Constants.INCLUDE_SERVLET_PATH);
    57
    58              if ((path == null) || (path.length() == 0)) {
    59                  path = request.getServletPath();
    60              }
    61
    62              if ((path == null) || (path.length() == 0)) {
    63                  throw new IllegalArgumentException(
    64                      "No path information in request");
    65              }
    66
    67              extension = true;
    68          }
    69
    70          // Strip the module prefix and extension (if any)
    71          ModuleConfig moduleConfig = saContext.getModuleConfig();
    72          String prefix = moduleConfig.getPrefix();
    73
    74          if (!path.startsWith(prefix)) {
    75              throw new IllegalArgumentException("Path does not start with '"
    76                  + prefix + "'");
    77          }
    78
    79          path = path.substring(prefix.length());
    80
    81          if (extension) {
    82              int slash = path.lastIndexOf("/");
    83              int period = path.lastIndexOf(".");
    84
    85              if ((period >= 0) && (period > slash)) {
    86                  path = path.substring(0, period);
    87              }
    88          }
    89
    90          return (path);
    91      }
    92  }