Help in DOM

Question

Hi,
I am generating a XML using DOM (org.w3c.dom ) which holds the form values.
The XML schema is like this
<root>
<data>
<id>1</id>
<check>True</check>
</data>
<data>
<id>2</id>
<check>false</check>
</data>
</root>
What im doing in my code -
I/P : Request parameter Values obtained from FORM
o/p: XML String
1)Create a root node
2)Create a Node called data
3)Create an id node and set the value obtaining from the Request parameter. Then append this node to data node
4)Similary create the check node,set its value based on some calculation and append this to data node.
5) Then attach the data node to Root node
Finally attach the Root node to the Document and later i convert this Documemt to String using serialization.
Problem here is sometimes based on Request parameter value, i want to check the id node created already and compare with the request value. If it matches, then i have to append a new node in the data node something like this :
Request value is 2 and ID node value is 2. hence append a new node
<data>
<id>2</id>
<check>false</check>
<newnode>test </newnode>
</data>
But how can i get the ID node,check its value ,compare with the request value and if it matches attache a new node as the Document at this point of time is not yet constructed. ie The data nodes are keep on attached to the root node and only finally the root node is attached to the Document.
Could anyone please help how to solve this problem . Please ask me if you are not clear.
Thanks in advance

Answer 1

Why don't you create a blank DOM document and than add root node and other nodes?
http://www.roseindia.net/xml/dom/