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From "Gianny Damour (JIRA)" <...@geronimo.apache.org>
Subject [jira] Commented: (GERONIMO-2074) CMP Issues two selects for each CMP bean read operation
Date Sun, 04 Jun 2006 12:33:30 GMT
    [ http://issues.apache.org/jira/browse/GERONIMO-2074?page=comments#action_12414638 ] 

Gianny Damour commented on GERONIMO-2074:
-----------------------------------------

Matt, could you please confirm that it indeed increases the performance?

> CMP Issues two selects for each CMP bean read operation
> -------------------------------------------------------
>
>          Key: GERONIMO-2074
>          URL: http://issues.apache.org/jira/browse/GERONIMO-2074
>      Project: Geronimo
>         Type: Bug
>     Security: public(Regular issues) 
>     Reporter: Matt Hogstrom
>     Assignee: Gianny Damour
>      Fix For: 1.2
>  Attachments: GERONIMO-2074.patch
>
> Number of executions               = 84422
>  Statement text                     = SELECT Q.symbol, Q.low, Q.open1, Q.volume, Q.price,
Q.high, Q.companyName, Q.change1 FROM QuoteEJB Q WHERE Q.symbol = ?
> Number of executions               = 84464
>  Statement text                     = SELECT Q.symbol FROM QuoteEJB Q WHERE Q.symbol
= ?
> This is running the PrimitiveServlet2EntityLocal.  In this primitive a CMP Entity bean
is selected and all fields referenced.  Performance would be greatly improved if we only did
the full select and avoided the round trip of two queries.
> The difference in counts is beause of a bug I'm chasing with Jencks re: some Tx failing.

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