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1   /*
2    * $Id: NestedGreaterEqualTag.java 376843 2006-02-10 21:02:56Z husted $
3    *
4    * Copyright 1999-2004 The Apache Software Foundation.
5    *
6    * Licensed under the Apache License, Version 2.0 (the "License");
7    * you may not use this file except in compliance with the License.
8    * You may obtain a copy of the License at
9    *
10   *      http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  package org.apache.struts.taglib.nested.logic;
19  
20  import org.apache.struts.taglib.logic.GreaterEqualTag;
21  import org.apache.struts.taglib.nested.NestedNameSupport;
22  import org.apache.struts.taglib.nested.NestedPropertyHelper;
23  
24  import javax.servlet.http.HttpServletRequest;
25  import javax.servlet.jsp.JspException;
26  
27  /***
28   * NestedGreaterEqualTag.
29   *
30   * @version $Rev: 376843 $ $Date: 2004-10-16 12:38:42 -0400 (Sat, 16 Oct 2004)
31   *          $
32   * @since Struts 1.1
33   */
34  public class NestedGreaterEqualTag extends GreaterEqualTag
35      implements NestedNameSupport {
36      /* the usual private member variables */
37      private String originalName = null;
38      private String originalProperty = null;
39  
40      /***
41       * Overriding method of the heart of the matter. Gets the relative
42       * property and leaves the rest up to the original tag implementation.
43       * Sweet.
44       *
45       * @return int JSP continuation directive. This is in the hands of the
46       *         super class.
47       */
48      public int doStartTag() throws JspException {
49          // get the original properties
50          originalName = getName();
51          originalProperty = getProperty();
52  
53          // request
54          HttpServletRequest request =
55              (HttpServletRequest) pageContext.getRequest();
56  
57          // set the properties
58          NestedPropertyHelper.setNestedProperties(request, this);
59  
60          // let the super do it's thing
61          return super.doStartTag();
62      }
63  
64      /***
65       * Complete the processing of the tag. The nested tags here will restore
66       * all the original value for the tag itself and the nesting context.
67       *
68       * @return int to describe the next step for the JSP processor
69       * @throws JspException for the bad things JSP's do
70       */
71      public int doEndTag() throws JspException {
72          // do the super's ending part
73          int i = super.doEndTag();
74  
75          // reset the properties
76          setName(originalName);
77          setProperty(originalProperty);
78  
79          // continue
80          return i;
81      }
82  
83      /***
84       * Release the tag's resources and reset the values.
85       */
86      public void release() {
87          super.release();
88  
89          // reset the originals
90          originalName = null;
91          originalProperty = null;
92      }
93  }