[ http://jira.codehaus.org/browse/DISPL-182?page=all ]
fabrizio giustina closed DISPL-182:
-----------------------------------
Resolution: Duplicate
Fix Version: 1.1
duplicate of DISPL-212 - already fixed for 1.1
> Empty list displayed when start offset == list length
> -----------------------------------------------------
>
> Key: DISPL-182
> URL: http://jira.codehaus.org/browse/DISPL-182
> Project: DisplayTag
> Type: Bug
> Components: Paging/Sorting
> Versions: 1.0
> Reporter: Wannes Simons
> Priority: Minor
> Fix For: 1.1
>
>
> In the unfortunate event that the starting offset is the same as the number
> of items in the list, an empty page is shown.
> This error occurs when the page number is saved in the session (using a
> custom RequestHelper) and the last item on the page is deleted. E.g. there
> are two pages and the last item on the second page is deleted. The pagenumber
> is still '2', but all items are shown on the first page, so the result is an
> empty list.
> The fix is very easy. In the TableTag, the initParameters() method, the
> invalid page check should be this:
> ----------------------------------------------
> // invalid page requested, go back to page one
> if (start >= fullSize){
> start = 0;
> }
> -----------------------------------------------
> As you can see; when start == fullSize, start has to be changed as well,
> because there should be at least 1 item on each page. Theoretically this
> should work as well:
> ----------------------------------------------
> // invalid page requested, go back to the previous page
> while (start >= fullSize){
> start = Math.max( start - this.pagesize, 0 );
> }
> -----------------------------------------------
> Making it go to the previous page, instead of the first in the list.
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