Re: OOo Pivoting Code Extraction

Yes, it helped a lot!
It confirms the findings I had after sending the email, and adds valuable
knowledge
that I wasn't able to get while navigating through the several files ;)

Is there anyway to build (by hand) an object to serve as input for this
calculation?
If I ask you about which would be the MAIN function that starts all the
pivoting process, what would you answer? :)

Thank you very much!

On Tue, Mar 1, 2011 at 9:49 AM, Niklas Nebel <[email protected]>wrote:

> On 28.02.2011 23:23, Nuno Oliveira wrote:
>
>> As I'm taking this project again, I bumped into some questions that you
>> may answer me immediately, I'm sure!
>>
>> Well I'm trying to discover which and where is the function that
>> performs the pivoting calculation.
>> By the hints you gave me before I'm searching for this function on
>> dptabres.cxx, and there I found a Calculate function, but it makes me
>> believe that it is not the function I'm searching for...
>> Also I am searching for the input for this calculation, and that
>> function takes some arguments that I can't assume as a structure holding
>> all the data to perform such computation.
>>
>> Can you give me some more hints about the form that the input takes for
>> the calculation?
>> And which is the main function where the pivoting calculation starts?
>>
>
> It's all distributed across several classes. ScDPSource::CreateRes_Impl
> creates ScDPResultMember objects pColResRoot and pRowResRoot which (in their
> children) contain the results. The CalcResults call then creates a cache of
> the source data and iterates through the rows (in
> ScDPTableData::CalcResultsFromCacheTable and ProcessRowData). For each
> source data row, ScDPResultMember::ProcessData is called which updates the
> results.
>
> In the results, ScDPResultMember has the information about a whole column
> or row. pChildDimension (ScDPResultDimension) is an array of
> ScDPResultMember objects for the next nested field. pDataRoot
> (ScDPDataMember) holds the column/row result, and in the case of pRowRoot it
> also has a similar structure of child member arrays (pChildDimension) for
> the results within that row.
>
> The data for an individual result value is updated with each source entry
> in ScDPAggData::Update, and the result is calculated from that in
> ScDPAggData::Calculate.
>
> Does that help a bit?
>
>
> Niklas
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Nuno Oliveira
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