How can I Insert a BLOB into a Table from Java?

Question

I have a Java class that creates an xml file from data in a non-sql data source. After it successfully creates and saves the file it inserts a record into an Oracle table to log the fact that an xml file was created.
Now the guy in the warehouse wants to get an email with the file attached. I have been looking into the apex_mail package, because we already have a procedure using htmldb_mail. However, that procedure is on our old server with HTMLDB 1.6 and it is not sending any attachments.
I think I have most of the apex_mail worked out, but I'm stuck on the blob thing. This is what I have so far:
* The Java program creates a String object called xmlDoc
* After xmlDoc is fully constructed, the file is written to the (Linux) server. This is accomplished with the following:
// writing the xmlDoc
fileDest = "/home/ewh/XMLOUT/";
fileName = "OrderEW_"\+orderNbr\+"_"\+ticketNbr\+".xml";
FileWriter fstream = new FileWriter(fileDest+fileName);
BufferedWriter out = new BufferedWriter(fstream);
out.write(xmlDoc);
out.close();
* Next I insert a record into the log file with:
// Add a record to the Oracle order_email table to let the mail process know that
// a new xml file is ready to be e-mailed to operations.
emailLogInsertQuery = " insert into ewh.order_email ( file_name, create_date ) ";
emailLogInsertQuery += " values ('"\+fileName\+"', sysdate)";
oraAction = oraStmt.executeUpdate( emailLogInsertQuery );
All of this is working fine so far. Now, I have added a blob type field to the order_email table, but I have no idea what to stick in there so that I have everything that apex_mail.add_attachment needs.
Here's a description of the order_email table:
SQL> desc ewh.order_email;
Name Type Nullable Default Comments
FILE_NAME VARCHAR2(30) Y
FILE_BLOB BLOB Y
CREATE_DATE DATE Y
SEND_DATE DATE Y
Thanks ever so much,
Gregory
Edited by: Canis Polaris on Jun 10, 2009 2:10 PM - Added escapes as necessary to show the plus signs around Java variables.

Answer 1

Hi,
From within APEX one can enter blob data in database tables, view the data and also update the data. Also one can send a blob attachment in an email.
May be you can follow a combination of the following OBEs to insert BLOB data and send BLOB data from APEX:
http://www.oracle.com/technology/obe/apex/apex31nf/apex31blob.htm
http://www.oracle.com/technology/obe/apex/apex31nf/apex31email.htm
-Priyanka