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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