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    1   /*
    2    * $Id: URLBean.java 495509 2007-01-12 07:50:25Z mrdon $
    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.struts2.util;
    22
    23  import java.util.HashMap;
    24  import java.util.Map;
    25
    26  import javax.servlet.http.HttpServletRequest;
    27  import javax.servlet.http.HttpServletResponse;
    28
    29  import org.apache.struts2.views.util.UrlHelper;
    30
    31
    32  /***
    33   * A bean that can generate a URL.
    34   *
    35   */
    36  public class URLBean {
    37
    38      HashMap params;
    39      HttpServletRequest request;
    40      HttpServletResponse response;
    41      String page;
    42
    43
    44      public URLBean setPage(String page) {
    45          this.page = page;
    46          return this;
    47      }
    48
    49      public void setRequest(HttpServletRequest request) {
    50          this.request = request;
    51      }
    52
    53      public void setResponse(HttpServletResponse response) {
    54          this.response = response;
    55      }
    56
    57      public String getURL() {
    58          // all this trickier with maps is to reduce the number of objects created
    59          Map fullParams = null;
    60
    61          if (params != null) {
    62              fullParams = new HashMap();
    63          }
    64
    65          if (page == null) {
    66              // No particular page requested, so go to "same page"
    67              // Add query params to parameters
    68              if (fullParams != null) {
    69                  fullParams.putAll(request.getParameterMap());
    70              } else {
    71                  fullParams = request.getParameterMap();
    72              }
    73          }
    74
    75          // added parameters override, just like in URLTag
    76          if (params != null) {
    77              fullParams.putAll(params);
    78          }
    79
    80          return UrlHelper.buildUrl(page, request, response, fullParams);
    81      }
    82
    83      public URLBean addParameter(String name, Object value) {
    84          if (params == null) {
    85              params = new HashMap();
    86          }
    87
    88          if (value == null) {
    89              params.remove(name);
    90          } else {
    91              params.put(name, value.toString());
    92          }
    93
    94          return this;
    95      }
    96
    97      public String toString() {
    98          return getURL();
    99      }
    100 }