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http://jira.codehaus.org/browse/DISPL-381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_120268
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Nathan McDonald commented on DISPL-381:
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I am looking for a feature similar to this.
In a previous project we were using jasper reports to generate PDFs, and one of
the really cool things was using a column value to group subsets of data.
Example is provided below from one of the jasper samples:
http://www.jasperforge.org/jaspersoft/opensource/business_intelligence/jasperreports/samples/FirstJasper.html
I've had a bit of a play myself, and with a custom decorator I can get a header
row above subgroups (one column marked as group, colspan the sub-header across
all columns and place the cell value in). The grouped column still appears in
the the following rows which would be nice to hide.
This was just a quick play, and obviously not a great way to do it, but shows
some proof of concept.
> Adding the group column value as a header row to the group results
> ------------------------------------------------------------------
>
> Key: DISPL-381
> URL: http://jira.codehaus.org/browse/DISPL-381
> Project: DisplayTag
> Issue Type: Improvement
> Components: Export, HTML Generation
> Affects Versions: 1.1
> Reporter: Suri Babu Batlanki
> Fix For: TBD
>
> Attachments: 28Jul2006-Grouping.html
>
>
> Normally we can group the results by specifying the group attribute of
> display:column tag.
> But the group column value show as a column in the table.
> It would be really helpful if we able to show the group column value as
> header row to the group results.
> I have attached a html file which depicts what I require...
> Thanks for providing an excellent library.
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