handline multipart MIME messages in Biztalk 2004

[vamsi]

Hi,

I am trying to handle multipart MIME messages in Biztalk 2004.My
Senario is like this

I have a flat file which has two parts.The first part is of content
type:text/plain and the second part is of Content type:application/pdf
with encoding :base64.

What i need to do is,i receive this textfile and send a xml output with

the pdf as the attachment.the problem is,i am able to generate the xml
file but not the pdf attachment.Is anyone familiar with this
issue.please let me know.i am pasting a part of the text file for your
reference

--------------------File start-------------------
MIME-Version: 1.0
Content-Type: multipart/related;
type="text/plain";
start="application/ms-cimessage";
boundary="----=_NextPart_001"

This is a multi-part message in MIME format.

------=_NextPart_001
Content-Type: text/plain;
Charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Content-ID: <application/ms-cimessage>

DOCFLATRESP087096350
ZZ087096350ZZ937748440937748440087096350A4026 A4026
0

90029627138363-26 WASHINGTON JOHN
A123456789WASHINGTON MARIA B222112222123 QA ROAD
TESTERVILLE PA1910390000.00 100000.00
Commitment0410200639.00 39 25.0 BYMNSP0.5200.5200.0000.0000.0001

001359
------=_NextPart_001
Content-Type: application/pdf
Content-Transfer-Encoding: base64
Content-ID: <application/certificate>
Content-Disposition: attachment;
filename=Cert_90029627-Date_20051012-114553-CorrID_A4026.pdf

JVBERi0xLjMKJa0KMSAwIG9iago8PAovVHlwZSAvQ2F0YWxvZwovUGFnZXMgMzEgMCBSCi9PdXR­saW5lcyAzMiAwIFIKL1ZpZXdlclByZWZlcmVuY2VzIDIgMCBSCi9PcGVuQWN0aW9uIFswIC9YWV­ogMCA3OTIgMF0KPj4KZW5kb2JqCjIgMCBvYmoKPDwgL1R5cGUgL1ZpZXdlclByZWZlcmVuY2VzC­i9IaWRlVG9vbGJhciBmYWxzZSAvSGlkZU1lbnViYXIgZmFsc2UgPj4KZW5kb2JqCjMgMCBvYmoK­Wy9QREYgL1RleHQgL0ltYWdlQ10KZW5kb2JqCjQgMCBvYmoKPDwKL1R5cGUgL0ZvbnQKL1N1YnR­5cGUgL1R5cGUxCi9OYW1lIC9GMQovQmFzZUZvbnQgL0NvdXJpZXIKL0Vu

------=_NextPart_001

--------------------------------file end------------

Thanks
vamsi

----------------------------------------------------------------------------------------------------------------------
Answer
----------------------------------------------------------------------------------------------------------------------

Here are the Steps assuming that you want to convert a MUltipart flat
file MIME file into and XML with pdf attachment.This senario is valid
for any output file with any number of attachments.

Assumptions:

1.You must have the Receive Flat File Schema.Mine was a positional
Schema.
2.If you have a map,make sure your map works.

Solution.

1.Create a Receive pipeline.Add a MIME/SMIME decoder in the decode
Section.you dont have to modify any properties.This decoder
automatically decodes your Mime Input messages.
2.Add Flat File or XML Dissembles if needed.
3.In the Orchestration ,Create a Multipart Message Type.If you have 1
attachment,Create 2 MultiParts and Set the Types as
"System.XML.XMLDocument".
4.Create 2 Message Types to seperate the input text file into the
required number of files.
a)Set the Body Message of Message Type=Flate File
Schema
b)Set the Attachment Message of Message
Type=System.String
5.Place a receive .Place a construct Message.Add 2 message assignments
inside the Construct Message.Here is where you seperate the input
message into the required 2 documents.
6.In the First message Assigment ,set the msgBody to the MultipartBody
Type like this
msgBody=msgMultiPart.MultiPartXml;(Based on my Example).Where msgBody
is the message and msgMultiPart is my Multipart message
7.Similarly in the Second Message Assigment,set the msgAssignment to
multipartPDF Type like this
msgAttachment=msgMultiPart.msgPDFPart;
8.From here its a straight forward mapping or sending the output.For my

solution ,i have a parallel shape which posts the msgBody after mapping

to a response location, and the msgAssignment is also posted out to the

same response/send location.

I hope i was clear in explaining the solution.Please send me an email
if you have anyquestions to vams...@gmail.com
vamsi_2...@yahoo.com