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https://issues.apache.org/jira/browse/TAP5-2589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16203292#comment-16203292
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ASF subversion and git services commented on TAP5-2589:
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Commit 4958b713fff229c6b0f028a7226a719549cf4d5b in tapestry-5's branch
refs/heads/master from [~jkemnade]
[ https://git-wip-us.apache.org/repos/asf?p=tapestry-5.git;h=4958b71 ]
TAP5-2589: extend interface with methods that ease incremental paging
> Improve Grid implementation for "slow" data sources
> ---------------------------------------------------
>
> Key: TAP5-2589
> URL: https://issues.apache.org/jira/browse/TAP5-2589
> Project: Tapestry 5
> Issue Type: Improvement
> Components: tapestry-core
> Reporter: Jochen Kemnade
> Fix For: 5.5.0
>
>
> When using a Grid that's backed by a data source for which performing a count
> is expensive, performance is quite bad.
> There are some places where Grid (and subcomponents) call
> {{getAvailableRows()}} to determine whether the data source is empty or has
> (at least) a specific number of results. We should provide (and use) more
> specific and efficient methods in {{GridDataSource}}.
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