AEM 6.5 inserting PDF document in a table's Blob column

Hi,

I have a custom bundle/code that converts the submitted XML data and XDP template into a PDF document, when an user fills in the form and submits it. The com.adobe.aemfd.docmanager.Document is used to generate this PDF file. 

The code contains Oracle prepared statement that stores the form's name and xdp name. This is working fine. 

I like to add/insert the PDF file in the table. The table is altered to include the Blob column.

The code ps.setBlob(3, generatedPDF); is generating the following error:

The method setBlob(int, Blob) in the type PreparedStatement is not applicable for the arguments (int, Document)

How to cast the document argument to type Blob?

Thanks,

Leena