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(XML.CDataSection) and MRM

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wolstek

Posted: Tue Mar 22, 2005 7:29 am Post subject: (XML.CDataSection) and MRM

Acolyte

Joined: 25 Jun 2001
Posts: 52
Location: Bristol, UK

I am attempting to build an MRM/XML1 output message that contains a tag which has the original xml message as its contents (within a CDATA section).

e.g for example based on input message defined as an MRM/XML1 message set, created by imported schema
<?xml version="1.0"?>
<Message>
<tag1>tag1data</tag1>
<tag2><![CDATA[<Anothermsg>....<Anothermsg>]]>
<tag3>tag3data</tag3>
</Message>

for example , I want to create an output message tha looks like( again defined as an MRM/XML1 message set, created by imported schema )
<OutputMessage>
<outtag1>outtag1</outtag1>
<outtag2>
<![CDATA[<?xml version="1.0"?><Message><tag1>tag1data</tag1><tag2><![CDATA[<Anothermsg>....<Anothermsg>]]><tag3>tag3data</tag3></Message>]]>
</outtag2>
</OutputMessage>

I have tried to create <outtag2> in two different ways

first concatenating the CDATA expression

Code:

DECLARE RootBitStreamOptions INTEGER BITOR(RootBitStream, ValidateNone);
DECLARE workBlob BLOB;
SET workBlob = ASBITSTREAM(InputRoot.MRM OPTIONS RootBitStreamOptions SET 'msgsetid' TYPE 'msgset_name' FORMAT 'XML1');
SET OutputRoot.MRM.outtag2
= '<![CDATA[' || CAST( workBlob AS CHARACTER CCSID InputRoot.MQMD.CodedCharSetId ENCODING InputRoot.MQMD.Encoding) || ']]>';

second using the (XML.CDataSection) expression

Code:

DECLARE RootBitStreamOptions INTEGER BITOR(RootBitStream, ValidateNone);
DECLARE workBlob BLOB;
SET workBlob = ASBITSTREAM(InputRoot.MRM OPTIONS RootBitStreamOptions SET 'msgsetid' TYPE 'msgset_name' FORMAT 'XML1');
SET OutputRoot.MRM.outtag2.(XML.CDataSection)
= CAST( workBlob AS CHARACTER CCSID InputRoot.MQMD.CodedCharSetId ENCODING InputRoot.MQMD.Encoding);

The first way works albeit with the output message with < expressions instead of '<' e.g ( <outtag2><![CDATA[<........... )
The second way, which would be my preferred way using (XML.CDataSection) results in a parser exception

Quote:

BIP5339E: Mismatch between message tree and logical definition While writing the message, the message tree did not match the logical structure of the message. The problem was encountered while attempting to write element 'RequestMessage' in message set 'E9CR2GC002001'.

I have therefore the following questions.
1. Can you use the (XML.CDataSection) expression in the MRM domain albeit with XML1 format
2. Can you have CDATA within a CDATA
( I did however get the same parser error when trying SET OutputRoot.MRM.outtag2.(XML.CDataSection) = 'dummy'; )
3. Any suggestions on what I might be doing wrong with (XML.CDataSection)

fazz

Posted: Wed Mar 23, 2005 8:22 am Post subject:

Centurion

Joined: 20 Feb 2004
Posts: 144
Location: England

You cannot have nested CDATA sections within an XML message.

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