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1   /*
2    * $Id: IteratorTag.java 651946 2008-04-27 13:41:38Z apetrelli $
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.struts2.views.jsp;
23  
24  import javax.servlet.http.HttpServletRequest;
25  import javax.servlet.http.HttpServletResponse;
26  import javax.servlet.jsp.JspException;
27  
28  import org.apache.struts2.components.Component;
29  import org.apache.struts2.components.IteratorComponent;
30  
31  import com.opensymphony.xwork2.util.ValueStack;
32  
33  /***
34   * @see IteratorComponent
35   */
36  public class IteratorTag extends ContextBeanTag {
37  
38      private static final long serialVersionUID = -1827978135193581901L;
39  
40      protected String statusAttr;
41      protected String value;
42  
43      public Component getBean(ValueStack stack, HttpServletRequest req, HttpServletResponse res) {
44          return new IteratorComponent(stack);
45      }
46  
47      protected void populateParams() {
48          super.populateParams();
49  
50          IteratorComponent tag = (IteratorComponent) getComponent();
51          tag.setStatus(statusAttr);
52          tag.setValue(value);
53      }
54  
55      public void setStatus(String status) {
56          this.statusAttr = status;
57      }
58  
59      public void setValue(String value) {
60          this.value = value;
61      }
62  
63      public int doEndTag() throws JspException {
64          component = null;
65          return EVAL_PAGE;
66      }
67  
68      public int doAfterBody() throws JspException {
69          boolean again = component.end(pageContext.getOut(), getBody());
70  
71          if (again) {
72              return EVAL_BODY_AGAIN;
73          } else {
74              if (bodyContent != null) {
75                  try {
76                      bodyContent.writeOut(bodyContent.getEnclosingWriter());
77                  } catch (Exception e) {
78                      throw new JspException(e.getMessage());
79                  }
80              }
81              return SKIP_BODY;
82          }
83      }
84  
85  }