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| ASBITSTREAM--->PARSE Research |
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| mqmaniac |
 Posted: Tue Jun 27, 2006 7:35 pm Post subject: ASBITSTREAM--->PARSE Research |
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Master
Joined: 27 Dec 2005
Posts: 201
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Hello All,
I am confused with the following..
When I Serialize my message(XML Message) using ASBITSTREAM function and store it in the Database.Its stored as a BLOB..According to the Manuals.
Pls Correct me ..
1.Since the Broker inserted this Message using its own parsers..
Is it possible for any other application to retrieve the Message in the Database as XML?
2.Or Should I Only use the "PARSE Clause" to Read the BLOB from the Database and Hope to Get My Initial XML Back?I am Wondering If Broker inserts some CRYPTO Codes into this Message.. Inserting so that ONLY Broker knows what exactly Is the BLOB????
HOW DOES A PARSE CLAUSE KNOW ABOUT THE DIFFERENT TAGS IN AN XML MESSAGE EVEN THOUGH ITS READING A BLOB Message???
I Feel that Broker is hiding Details from the User..When It Inserts Data in a database and Retrives...(This is Only with BITSTREAMS) |
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| kimbert |
| Posted: Wed Jun 28, 2006 12:44 am Post subject: |
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Jedi Council
Joined: 29 Jul 2003
Posts: 5542
Location: Southampton
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| Quote: |
| Is it possible for any other application to retrieve the Message in the Database as XML? |
XML is XML, so any XML parser can read it. However, depending on how you serialized the message, it might have one or more headers before the start of the XML data.
| Quote: |
I am Wondering If Broker inserts some CRYPTO Codes into this Message.. Inserting so that ONLY Broker knows what exactly Is the BLOB????
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No it does not. The broker development team have got better things to spend their time on!
The broker is not doing anything surprising - the bitstream created by ASBITSTREAM is standard XML text. When you re-parse it using CREATE...PARSE the XML parser simply parses the text. ( in other words, it might be called a BLOB in your database, but it is valid text as far as the parser is concerned ).
If you don't believe me, inspect the contents of the database table. |
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| mqmaniac |
| Posted: Wed Jun 28, 2006 8:14 am Post subject: |
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Master
Joined: 27 Dec 2005
Posts: 201
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Thanks Kimbert..
The BROKER is only Serializing/De Serializing the Data as BLOB..But Its always XML Data out there..
I am clear now.. |
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| mgk |
| Posted: Tue Jul 04, 2006 6:07 am Post subject: |
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Padawan
Joined: 31 Jul 2003
Posts: 1642
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Just to add a little more to what Tim already said:
| Quote: |
| HOW DOES A PARSE CLAUSE KNOW ABOUT THE DIFFERENT TAGS IN AN XML MESSAGE EVEN THOUGH ITS READING A BLOB Message |
It knows because you tell it in the DOMAIN clause of the CREATE ... PARSE statement.
Regards,
_________________
MGK
The postings I make on this site are my own and don't necessarily represent IBM's positions, strategies or opinions. |
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