Content Conversion: One row with one header and multiple item structures. Possible?

Question

Dear all,
I have a input that looks like this:
HeaderKeySomeHeaderInformationItemKeySomeItemInformationItemKeySomeItemInformation...
Here's the actual input
TEHGMESS0026000000288S0001TEI2____026200006112410400000000           18010000000000                                                      00126000000000126000120600000000002000000000                                    000WESTMONOBERTBE2014052309422408120003 000000000000000000000000000000JTEI2____026200006112410400000000           19010000000000                                                      00126000000000126000120600000000002000000000                                    000WESTMONOBERTBE2014052309422408120003 000000000000000000000000000000J
HeaderKey = TEHGMESS
ItemKey = TEI2____
Is it possible to process this via MessageTransformBean (my actual scenario is JMS to IDoc)? I already tried but I only succeeded when having new lines in my input to separate between Header and (multiple) Items.
So when the input and my configuration looks like below it works, but when I only have a single row input it doesn't work, even when specifying xml.recordHeader.endSeparator = '0' / xml.recordItem.endSeparator = '0'. I even tried xml.endSeparator = '0' but no luck.
Input that works
TEHGMESS0026000000288S0001
TEI2____026200006112410400000000           18010000000000                                                      00126000000000126000120600000000002000000000                                    000WESTMONOBERTBE2014052309422408120003 000000000000000000000000000000J
TEI2____026200006112410400000000           19010000000000                                                      00126000000000126000120600000000002000000000                                    000WESTMONOBERTBE2014052309422408120003 000000000000000000000000000000J
Matching configuration that works for input which structures are delimited by new line.
Paramentername
Parametervalue
Transform.Class
com.sap.aii.messaging.adapter.Conversion
Transform.ContentType
text/xml;charset=utf-8
xml.conversionType
StructPlain2XML
xml.documentName
MT_TEI2Split
xml.documentNamespace
http://hansgrohe.com/pi/MQ/TEI2/10
xml.keyFieldName
SATZARTKey
xml.keyFieldType
CaseSensitiveString
xml.processFieldNames
fromConfiguration
xml.recordHeader.fieldFixedLengths
8,4,9,1,4
xml.recordHeader.fieldNames
SATZARTKey,SATZLENHG,NUTZLEN,MESSAE,MESSNR
xml.recordHeader.keyFieldValue
TEHGMESS
xml.recordItem.fieldFixedLengths
8,4,2,10,8,19,3,3,2,10,6,2,10,6,2,10,6,6,6,6,6,11,9,2,10,6,2,10,6,3,4,3,7,14,8,1,31
xml.recordItem.fieldNames
SATZARTKey,SATZLEN,BUCHART,TRNR,ANDGNR,MITEM,TEIVARI,BSTSTATU,REFTYP,ORNO,POS,REFTYP1,ORNO1,POS1,CHATYP,CHARGE,CHAPOS,ABBVONL,ABBNACH,ZUBVONL,ZUBNACH,I2MENG,I2BUNR,REFTYPN,ORNON,POSN,REFTYP1N,ORNO1N,POS1N,BSTSTATN,ABUSERAB,ABUSERFN,ABUSERNA,I2TIME,I2LIDNR,I2FMCODE,FILLER
xml.recordItem.keyFieldValue
TEI2____
xml.recordsetName
records
xml.recordsetStructure
recordHeader,1,recordItem,*
Any clues on this? Is it even possible to have multiple structures in one row? Many thanks in advance
Jens

Answer 1

SAP came back to me with this answer:
First, I would like to point the documentation for Message Transform
Bean (MTB) in 7.4:
http://help.sap.com/saphelp_nw74/helpdata/en/57/0b2c4142aef623e10000000a155106/content.htm?frameset=/en/57/0b2c4142aef623e10000000a155106/frameset.htm&current_toc=/en/45/0ea2de423c2d6be10000000a11466f/plain.htm&node_id=18
As it is written at the beginning of this document, MTB is used to
call classes written for the Plain Adapter Engine. So you may find
additional documentation about the parameters for convertion in the
documentation of the Plain Adapter Engine
(http://help.sap.com/saphelp_nw74/helpdata/en/0d/00453c91f37151e10000000a11402f/content.htm?frameset=/en/1b/d5ef3b1ad56d4fe10000000a114084/frameset.htm&current_toc=/en/75/246b3de666930fe10000000a114084/plain.htm&node_id=11).There it is written that the structures by default are
arranged line-by-line. The endSeparator just adds additional character
string as a separator after the last column in a row.
I hope that this answers your question. MTB expects the data to be
structured line by line.
You may add a custom module, which transforms the message in the
expected format.
If you have a look at the second link there's even a more precise wording that multiple structures within one line are not supported:
xml.NameA.endSeparator
Even if no specification is made here, a line break must follow since substructures are always expected as a line of the document.
Bottom line is that it's not supported by now and verfied by me with PI 7.4 SP5
Many thanks to Ambrish, Amit and Hareesh for the valuable input. Will probably try to work things out for now following Ambrish's / Hareesh's suggestion as this seems easier to implement. Amit's proposal with a dedicated module however would probably be the more polished solution.
Cheers
Jens