Retrieve session and document using webisessionid and document token

Hi,

I am trying to open a document in a session which is already in progress. In another words, I have the cdzSessionId (string returned by ReportEngine.getServerInstance()) and the documentToken of the required document. I could not find the steps or API or open this document using the same session (without creating a new one).

Can someone help me with that, by posting some code samples or guideline on how to do that?

I know this must be possible, because we load the webi-applet in our jsp and it takes this values to work on the document.

Thanks in advance,

Santosh