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| Re: hiding column after rendering [message #733860 is a reply to message #733849] |
Wed, 05 October 2011 19:46   |
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Why not add an aggregate computed column to the dataset that sums the
column for all rows. Use the computed column in the column visibility
expression.
Jason
On 10/5/2011 3:22 PM, tob_filt wrote:
> Hi there,
>
> I'm creating a BIRT report that's supposed to display my company's
> clients expenses. I'm using a table and the lines are used to give the
> different divisions of a client while the columns are used to display
> the different categories of expenses.
> The problem I have is that not all clients have every expense
> categories, so a lot of the columns end up being filled with zeroes. I
> essentially want to hide those said columns... but I can only tell if a
> column is filled with 0 AFTER it's actually rendered at which point it's
> too late for the visibility property to kick in.
>
> Is there another way of proceeding with this?
>
> Thanks in advance
>
> Osu
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| Re: hiding column after rendering [message #733899 is a reply to message #733884] |
Wed, 05 October 2011 21:46 |
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Use a Max and a Min function instead of sum. This will require two
computed columns though.
Jason
On 10/5/2011 5:05 PM, tob_filt wrote:
> Yeah, I tried that initially and it works... except at one point, a
> division has an expense of 154$ and another division, for the same
> expense, actually has a credit of the exact same amount. If I sum the
> whole thing, the overall total ends up as 0... but I don't want this
> column hidden in this case because something actually happened. It's
> just coincidence that I have two transactions that cancel each other out.
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| Re: hiding column after rendering [message #734094 is a reply to message #734035] |
Thu, 06 October 2011 16:12 |
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Absolutely as long as the aggregation appears in the table bindings it
will be evaluated.
Jason
On 10/6/2011 8:52 AM, tob_filt wrote:
> Goodness, I was so fixated on the sum I forgot there were actually other
> aggregation functions available! All I have to do is use a count with a
> filter on non-zero values!!! That should work pretty nicely.
>
> Also, if I hide this aggregation for all outputs, can I still use it to
> set the visibility of the column? I suppose so, since the control still
> exists even if it's hidden.
>
> Thanks a lot for giving me this idea with your suggestion :d.
>
> Osu
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. Thanks a lot again