Struts 2 DOJO, Struts2 DOJO, Struts 2 example, example

Home >> Struts



There could be many ways of creating Tree structure while working
with DOJO, Struts2 Plugin for DOJO.

In this example I shall try to cover a very simple way of putting
various pieces of code together to come up with a Tree Layout for
displaying set of Books as a case study.

In this example this particular Tree structure will be formed out
of a dynamically populated object at server side.

This object will have a parent-child association with multiple instances
of the same class as child to the root node.

This means, if Book is a case study class in this example, then it
can have other Book instances as child stored inside the parent Book
object with a data type as List.











Book.java
package example;
import java.util.List;

public class Book
{
  private String bookId;
  private String bookName;
  private List<Book> booksList;

  public void setBookId(String bookId) {
	  this.bookId = bookId;
  }
  public String getBookId() {
	  return this.bookId;
  }
  public void setBookName(String bookName) {
	  this.bookName = bookName;
  }
  public String getBookName() {
	  return this.bookName;
  }
  public void setBooksList(List booksList) {
	  this.booksList = booksList;
  }
  public List<Book> getBooksList() {
	  return this.booksList;
  }

}


Now, the actual Tree widget values will be mapped to this Book instance
that is created within a method of this example Action class, as follows:

BooksTreeAction.java
package example;
import java.util.List;
import java.util.ArrayList;

import com.opensymphony.xwork2.ActionSupport;

public class BooksTreeAction extends ActionSupport
{
    public Book getBooksTree() {

      Book bk = new Book();
      bk.setBookId("BK001");
      bk.setBookName("Java Books");

      Book bk1 = new Book();
      bk1.setBookId("C001");
      bk1.setBookName("Books");
      List list = new ArrayList();
      list.add(bk);
      bk1.setBooksList(list);

      return bk1;
   }
}


In order to make this example work, it is needed to complete
action mapping in struts.xml file and writing the appropriate
JSP file as mentioned in ths action result.

struts.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
    <package name="dojo-tree-example1" namespace="/example1"
                 extends="struts-default">
        <action name="tree-example1" class="example.BooksTreeAction">
                <result>/sample.jsp</result>
        </action>
    </package>

</struts>


and the sample.jsp file

<%@ taglib uri="/struts-dojo-tags" prefix="s2d"%>
<html>
<head><title></title>
<s2d:head cache="true"/>
</head>
<body>
<div>
  <s2d:tree id="treeOfBooks" rootNode="%{booksTree}" 
            nodeIdProperty="bookId" nodeTitleProperty="bookName" 
            childCollectionProperty="booksList"/>

</div>
</body>
</html>


This rootNode (value of this attribute is booksTree) should be inline
with the getter method name in the action mapping which is getBooksTree
in this case. Other attributes of the tree tag are pretty straight 
forward to co-relate.

In order to test this example, the URL is as follows:

http://localhost:8080/struts2-and-dojo/example1/tree-example1

where localhost being the local machine and 8080 being the Tomcat
web server listening port for this example's runtime environment.
example1  being the namespace and tree-example1 being the action
name.

Hope this helps.


If anything missed out , please let me know at
techienjoy at yahoo . com

Tags: Struts 1 Struts2 plugin Tags: struts jsf integrate Tags: struts result chain Tags: struts tiles i18n Tags: Struts validation struggle Tags: Struts Tags: struts1 date validation Tags: struts1 struts2 validation Tags: struts2 dojo 1 Tags: struts2 dojo 2 Tags: struts2 dojo 3 Tags: struts2 dojo 4 Tags: Struts2 example steps Tag usage Tags: Struts2 example steps Tags: struts2 own validator Tags: struts2 pdf result Tags: struts2 radio tag example Tags: struts2 result plaintext Tags: struts2 tags example Tags: struts2 tiles i18n Tags: struts2 upload example Tags: struts2 validation 1 Tags: struts2 validation expression Tags: struts2 validation Tags: struts2 xslt article

DISCLAIMER : The content provided in this page is not warranted and/or guaranteed by techienjoy.com. techienjoy.com is not liable for any negative consequences that may result/arise from implementing directly/indirectly any information covered in these pages/articles/tutorials. All contents of this site is/are written and provided on an "AS IS" basis, without WARRANTIES or conditions of any kind, either express or implied, including, without limitation, merchantability, or fitness for a particular purpose. You are solely responsible for determining the appropriateness of using or refering this and assume any risks associated with this. In spite of all precautions taken to avoid any typo in these pages, there might be some issues like grammatical mistakes and typos being observed in these pages, techienjoy.com extends sincerest apologies to all our visitors for the same.