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https://issues.apache.org/jira/browse/TAPESTRY-2245?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Howard M. Lewis Ship closed TAPESTRY-2245.
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Resolution: Fixed
Fix Version/s: 5.0.11
Assignee: Howard M. Lewis Ship
> GridDataSource getAvailableRows() method called inefficiently
> -------------------------------------------------------------
>
> Key: TAPESTRY-2245
> URL: https://issues.apache.org/jira/browse/TAPESTRY-2245
> Project: Tapestry
> Issue Type: Bug
> Components: tapestry-core
> Affects Versions: 5.0.11
> Reporter: Howard M. Lewis Ship
> Assignee: Howard M. Lewis Ship
> Fix For: 5.0.11
>
>
> The getAvailableRows() method is called multiple times while rendering the
> page. This is fine when it is just invoking size() on a List, but for a
> Hibernate query it is quite inefficient:
> [INFO] AppModule.TimingFilter Request time: 1 ms
> Hibernate:
> select
> count(account0_.ACCOUNT_ID) as col_0_0_
> from
> ACCOUNT account0_
> Hibernate:
> select
> this_.ACCOUNT_ID as ACCOUNT1_0_0_,
> this_.FIRST_NAME as FIRST2_0_0_,
> this_.LAST_NAME as LAST3_0_0_,
> this_.PASSWORD as PASSWORD0_0_,
> this_.DATE_OF_BIRTH as DATE5_0_0_,
> this_.COMMENTS as COMMENTS0_0_
> from
> ACCOUNT this_
> Hibernate:
> select
> count(account0_.ACCOUNT_ID) as col_0_0_
> from
> ACCOUNT account0_
> Hibernate:
> select
> count(account0_.ACCOUNT_ID) as col_0_0_
> from
> ACCOUNT account0_
> Hibernate:
> select
> count(account0_.ACCOUNT_ID) as col_0_0_
> from
> ACCOUNT account0_
> Hibernate:
> select
> count(account0_.ACCOUNT_ID) as col_0_0_
> from
> ACCOUNT account0_
> [INFO] AppModule.TimingFilter Request time: 147 ms
> [INFO] AppModule.TimingFilter Request time: 0 ms
> [INFO] AppModule.TimingFilter Request time: 0 ms
> Some care should be taken to ensure that the method is invoked once per
> request and the value cached.
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