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From "Michael Dick (JIRA)" <>
Subject [jira] Commented: (OPENJPA-407) Cache SQL (or closer precursors to SQL) more aggressively
Date Fri, 02 May 2008 21:22:55 GMT


Michael Dick commented on OPENJPA-407:

I've committed Fay & Jeremy's patch to trunk. The JIRA issue indicates that this issue
is still a candidate for 1.1.0 - if it's deemed safe enough to put in 1.1.0 it should be easy
to merge across. 

> Cache SQL (or closer precursors to SQL) more aggressively
> ---------------------------------------------------------
>                 Key: OPENJPA-407
>                 URL:
>             Project: OpenJPA
>          Issue Type: Improvement
>          Components: jdbc, kernel, query, sql
>    Affects Versions: 0.9.0, 0.9.6, 0.9.7, 1.0.0
>            Reporter: Patrick Linskey
>             Fix For: 1.1.0
>         Attachments: findBy.patch, OPENJPA-407.patch, OPENJPA-407.patch, OPENJPA-407.patch,
OPENJPA-407.patch, QuerySQLCache.doc
> When data is not available in the data cache, OpenJPA dynamically creates SQL to look
up the requested data. OpenJPA should more aggressively cache this SQL to accelerate pathways
from a cache miss to the database.
> The generated SQL takes a number of factors into account, including the requested records,
transaction status, currently-loaded data, and the current fetch configuration. Any caching
would need to account for these factors as well.

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