Paul:
Here is a link to satisfy your curiosity:
http://www.frbservices.org/servicesetup/check/check21_technical_informat
ion.html
Click on "Image Cash Letter Customer Documentation" link
it was a binary format and that it could have embedded images,
does that sound right from your reading?
Yep. It is too bad that there isn't an XML standard. Read this quote
from the generic data types introduction:
" Unless otherwise stated in applicable agreements, all characters and
symbols shall have representation in the common character 8-bit EBCDIC
code scheme with the exception that Digital Signature (Field 17) and
Image
Data (Field 19) in the Image View Data Record (Type 52) is binary data.
Optionally, characters and symbols may be represented using 8-bit ASCII
rules if permitted by agreement between sender and receiver. EBCDIC and
ASCII characters shall not be intermixed in the same interchange. The
coding scheme may be verified by inspecting the first two characters of
the X9.37 file that have the value '01' (File Header Record Type 01,
Field 1).
The value '01' is defined in EBCDIC with the hexadecimal value 'F0F1'
and in ASCII with the hexadecimal value '3031'."
But it is possible to write RPG programs which read and write files in
the IFS file system, I've done that before. I wouldn't expect to be able
to do anything with the embedded images except treat them as a lump of
bytes, though.
I was thinking along the lines of reading the X9.37 file into a user
space and unraveling it into RPG data structures. As for the image
data, the easiest approach would be to use Java Advanced Images to
provide the skeleton of a TIFF, load the image data portion into it and
write out each document as a TIFF.
My manager would like me to build the TIFF directory in RPG. That way
our other programmers could work on the project without learning another
language.
Left to my own devices I'd do the whole thing in Java. But I am trying
to keep an open mind.
Bill Blalock
-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx
[mailto:java400-l-bounces@xxxxxxxxxxxx] On Behalf Of Clapham, Paul
Sent: Tuesday, May 26, 2009 2:19 PM
To: Java Programming on and around the iSeries / AS400
Subject: RE: Experience working with Check 21 file format X9.37
I was going to have a quick look at the specs, just out of curiosity.
But they wanted $50 for a copy of it. So obviously I didn't have a quick
look at the specs. But I did find another page which said that it was a
binary format and that it could have embedded images, does that sound
right from your reading?
If that's the case then you're going to have to be careful to avoid
ASCII-to-EBCDIC conversion. Doing that to a TIFF file would be bad news.
But it is possible to write RPG programs which read and write files in
the IFS file system, I've done that before. I wouldn't expect to be able
to do anything with the embedded images except treat them as a lump of
bytes, though.
PC2
-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx
[mailto:java400-l-bounces@xxxxxxxxxxxx] On Behalf Of Blalock, Bill
Sent: May 26, 2009 12:04
To: Java Programming on and around the iSeries / AS400
Subject: Experience working with Check 21 file format X9.37
Hi all:
My manager asked me to look into importing check data and images, for
Check 21, from files in the X9.37-2003 format.
I've have some PDFs which explain the file format layout but I haven't
found any example or test files that I can compare the documentation to.
Any suggestions where I can find sample or test files? Would you happen
to have one you could share (has to be a safe, clean file - no
confidential information)?
My boss is hard core RPG'r and wants this done in RPG. Personally I
think it is more suitable for Java (or C shudders). Does anyone have
any experience either way?
Thanks
Bill Blalock
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