What to do with the BLOB for the Error Handling ?

Question

I have a BPEL process consuming messages for b2berroruser and it works well. My next step is to resubmit the data to the Queue.
Do I leave it the payload as a BLOB data type when resubmitting the transaction ?
I also need to write a report with the text of the raw data. How do I convert the BLOB to a human readable type in BPEL ?

Answer 1

To simplify even more for you - lets say I wanted to send raw EDI data into a email >when there is an error of some sort (for business users to handle). How do I convert the >BLOB stored in the b2b schema to readable text for either resubmission or write to a >message.If you want to send the raw EDI data in an email then one of the possibilities could be to query the database view with the specific b2b message id. The payload is stored as a blob and would need to be extracted as text. I am a basic PL/Sql user so won't be able to give you the best query to use here. Lets say you want to extract the first 250 chars of the EDI native data, then you could use:
select UTL_RAW.CAST_TO_VARCHAR2 (DBMS_LOB.SUBSTR(wirepayload,250, 1))
from b2b_instancemessage where b2bmessageid = '<b2bMessageID>';
So you could write a PL/SQL function to extract this information (by looping over chunks of data), invoke that function (eg. from BPEL) and send out an email.