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yaakovd
PostPosted: Sat Apr 26, 2008 12:16 pm    Post subject: Complex on-demand parsing Reply with quote

Partisan

Joined: 20 Jan 2003
Posts: 319
Location: Israel
Hi, ALL

I have binary massage of following structure:

InFile
-----> Data Block (fixed length block of 8176 bytes)
---------> Record
-------------> Record Length (2 bytes)
-------------> Record Type (1 byte)
-------------> Choice of messages:
.......................type 1
.......................type 2
.............................
.......................type n
At the end of each block I have varable length buffer that complete block to 8176 bytes.

I can use only on demand parsing because I never know type of the next record.

When I use Data Block as message type and CWF and ondemand parsing in compute node, it working fine, but I can read only one Data Block.

I set InFile as Message type and TDS, where Data Block is fixed length fixed length it parse whole file.
Then I tried the following whith idea of on-demand parsing block by block:
Code:

      SET Environment.Variables.DataBlockStream = InputRoot.MRM.DataBlock[I];
           IF Environment.Variables.DataBlockStream IS NOT NULL THEN
               CREATE LASTCHILD OF Environment.Variables.Data.Record
           PARSE ( Environment.Variables.DataBlockStream
                           SET 'my message set'
                           TYPE 'MsgDataBlock'
                           FORMAT 'CWF'
                            ENCODING InputRoot.Properties.Encoding
                            CCSID InputRoot.Properties.CodedCharSetId);                          
           END IF;

I got exception:
Code:

   Text:CHARACTER:Attempt to copy an unresolved element
      Insert
         Type:INTEGER:15
         Text:CHARACTER:8e6ee48
      Insert
         Type:INTEGER:5
         Text:CHARACTER:(0x01000013):MsgRecord


Any idea???

Thanks.
_________________
Best regards.
Yaakov
SWG, IBM Commerce, Israel
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