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| In-memory cache using Row Shared variables |
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| ghoshly |
 Posted: Fri Mar 01, 2013 2:10 am Post subject: In-memory cache using Row Shared variables |
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Partisan
Joined: 10 Jan 2008
Posts: 333
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I was following http://www.mqseries.net/phpBB/viewtopic.php?p=310506&sid=6354754b1c4a1eae694c0be4ab160e6b
I am trying to create a procedure which receives the table name as parameter and caches the data under a shared row variable of the same name.
while implementation I am failing while trying to pass the name as ROW variable as the parameter to the procedure.
| Code: |
CREATE PROCEDURE InitialTableLoad(IN TableName ROW) BEGIN
SET TableName.valid VALUE = NULL;
CACHE : BEGIN ATOMIC -- beginning of atomic block. Processing is single threaded until the END; is reached
IF TableName.valid IS NULL THEN
SET TableName.StructureRow[] = EVAL('SELECT * FROM Database.'|| dataSourceName || '.' || usrSchema ||'.' || lookUpTable);
SET TableName.valid = TRUE;
END IF;
END CACHE;
END; |
Could you please help to identify the way I should pass the name?
Thanks a lot. |
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| mgk |
| Posted: Fri Mar 01, 2013 2:14 am Post subject: |
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Padawan
Joined: 31 Jul 2003
Posts: 1642
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Pass it as a REFERENCE.
Kind 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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| ghoshly |
| Posted: Fri Mar 01, 2013 2:38 am Post subject: Thanks .. Thanks.. a lot |
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Partisan
Joined: 10 Jan 2008
Posts: 333
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I Salute!!!!
I don't know why I was feeling a reference should be used for message tree only, even though a ROW is a reference type.
Thanks a lot. |
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| mgk |
| Posted: Fri Mar 01, 2013 3:25 am Post subject: |
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Padawan
Joined: 31 Jul 2003
Posts: 1642
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You can think of ROW as another name for a Tree. Everything you can do with a tree like the LocalEnvrionment, you can do with a ROW...
Kind 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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