INSERT CLOB DATA TO RTF TEMPLATE

Hi,

I have an xml which returns from the SQL Query which has the signature field to be shown in rtf template.We are taking data from the Siebel application.In the Siebel,they have a signature form applet in which they sign using the mouse pointer and they store the data in a CLOB datatype column.

I have to get the signature from the CLOB column from DB. I have tried using the following code,but it is not working since may be it is not a base64 encoded format and a BLOB column.

<fo:instream-foreign-object content-type="image/jpg">