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1   /*
2    * $Id: NestedWriteNestingTei.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  package org.apache.struts.taglib.nested;
22  
23  import javax.servlet.jsp.tagext.TagData;
24  import javax.servlet.jsp.tagext.TagExtraInfo;
25  import javax.servlet.jsp.tagext.VariableInfo;
26  
27  /**
28   * NestedWriteNestingTei
29   *
30   * This class will allow the nested:writeNesting tag to actually do what the
31   * doc says and make a scripting variable as an option (when "id" is
32   * supplied).
33   *
34   * @version $Rev: 471754 $
35   * @since Struts 1.2
36   */
37  public class NestedWriteNestingTei extends TagExtraInfo {
38      /**
39       * Return information about the scripting variables to be created.
40       */
41      public VariableInfo[] getVariableInfo(TagData data) {
42          /* the id parameter */
43          String id = data.getAttributeString("id");
44  
45          VariableInfo[] vi = null;
46  
47          if (id != null) {
48              vi = new VariableInfo[1];
49              vi[0] =
50                  new VariableInfo(id, "java.lang.String", true,
51                      VariableInfo.AT_END);
52          } else {
53              vi = new VariableInfo[0];
54          }
55  
56          // job done
57          return vi;
58      }
59  }