[jira] Updated: (TOMAHAWK-1009) DataScoller - FastForward has borderline issues

["Lars Ködderitzsch (JIRA)" <de...@myfaces.apache.org>]

     [ https://issues.apache.org/jira/browse/TOMAHAWK-1009?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lars Ködderitzsch updated TOMAHAWK-1009:
----------------------------------------

    Status: Patch Available  (was: Open)

> DataScoller - FastForward has borderline issues
> -----------------------------------------------
>
>                 Key: TOMAHAWK-1009
>                 URL: https://issues.apache.org/jira/browse/TOMAHAWK-1009
>             Project: MyFaces Tomahawk
>          Issue Type: Bug
>          Components: Data Scroller
>    Affects Versions: 1.1.5
>            Reporter: Lars Ködderitzsch
>
>                 
> In certain cases the Fast forward works incorrectly, resulting in an empty table.
> For instance you have 100 rows, 10 per page, fastforward set to 10.
> You start off on the first page, then fast forward.
> Due to a little bug in the page calculation, you will end up on page 11, which is empty.
> Proposed fix:
> snip from HtmlDataScroller broadcast -- see the line commented with //fix here
> else if (FACET_FAST_FORWARD.equals(facet))
>                 {
>                     int fastStep = getFastStep();
>                     if (fastStep <= 0)
>                         fastStep = 1;
>                     int next = uiData.getFirst() + uiData.getRows() * fastStep;
>                     int rowcount = uiData.getRowCount();
>                     if (next >= rowcount) //fix here >= instead of >
>                         next = (rowcount - 1) - ((rowcount - 1) % uiData.getRows());
>                     setFirst(uiData, next);
>                 }

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