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http://jira.codehaus.org/browse/DISPL-125?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=154365#action_154365
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SRINIVASARAO DANABOYINA commented on DISPL-125:
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pls can you describe how to declare
PARAMETER_PREVIOUSSORT,PARAMETER_PREVIOUSSORT in TableTagParameters class
because these varibale are used in Tabletag.java
Regards
srinivas
> Preserve The Current Page And Sort Across Sessions (patch included)
> -------------------------------------------------------------------
>
> Key: DISPL-125
> URL: http://jira.codehaus.org/browse/DISPL-125
> Project: DisplayTag
> Issue Type: New Feature
> Components: Paging/Sorting
> Affects Versions: 1.0 RC2
> Reporter: fabrizio giustina
> Priority: Minor
> Fix For: 1.2
>
> Attachments: PreserveSortAndPage.patch
>
>
> ====
> imported from sf tracker
> id 980723
> submitted by David E - halcy
> http://sourceforge.net/support/tracker.php?aid=980723
> ====
> Here is another enhancement for the project. It adds
> the attribute
> "preserveSortAndPage" to the table tag in both EL and
> standard versions.
> The idea is that (at least from usage on our own site)
> someone can sort a
> large list and get it exactly as they like it, then perhaps
> navigate away to
> something else, and would like to when they return see
> it the same way they
> left it (potentially, the data could change). However
> navigating back to it
> they likely wouldnt have the request parameters needed
> to sort it as it was,
> so when the preserveSortAndPage attribute is set to
> true, the current
> sort/page/sort order (and potentially previous sort/sort
> order) are all
> saved into session attributes named the same as they
> would as request
> parameters.
> When the tag is executed and the preserveSortAndPage
> attribute is set to
> true it will first check the request parameters for the
> necessary
> information, and if it returns null from there it will
> fallback to session,
> then eventually to defaults.
> There is an inherent limitation to this, if someone had a
> list somewhere
> else on the site and it was using the same name
> variables for its list, and
> it also had the preserveSortAndPage attribute set the
> variables could clash,
> thats a limitation of the parameter encoder. I thought
> about tweaking the
> parameter encoder to also encode perhaps the current
> request.uri which would
> be unique to that list because it would be on a different
> page from another
> list, however we use struts and when I watched that
> value with the debugger
> it was just pointing to my base tiles layout.. (which was
> surprising to
> me).. so that wouldnt uniquely define the list either. So
> my conclusion is
> it should be a documented limitation for people that
> want to use this
> feature, they need to name their lists differently if they
> are going to use
> them across the site.
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