Hi,
Στις 6/2/2014 9:10 πμ, ο/η LacaK έγραψε:
Dimitrios Chr. Ioannidis wrote / napísal(a):
The problem i'm having is that i can't use UniDirectional and
SaveToStream at the same time ( getting
DataBaseError(SUniDirectional) ) and for big datasets the memory goes
.....
So, does anyone have any idea how to use xmldatapacketreader ( which
implies SaveToStream ) and UniDirectional ?
As you can see there is CheckBiDirectional in the begining of
SaveToStream ...
I am not sure, why is there such check (may be that bookmarks are used
and bookmarks are not supported by unidirectional datasets?)
AFAIU saving is performed in sequential order from first record to
last ... and update buffer is evaluated, but unidirectional dataset
can not have update buffer ... so at first look it seems, that saving
can be performed also on unidirectional dataset (as it supports First
and Next methods)
May be that CheckBiDirectional is there only for symmetricity with
LoadFromStream ... and LoadFromStream can not be performed on
UniDirectional datasets. (because they are not updateable and do not
handle cached updates)
What you can do is remove check: CheckBiDirectional in the begining of
SaveToStream ant try what happens ;-)
Thx for the hint.
I already tried that with no success. There is a lot more involved reg.
the ScrollResult of the UniDirectional instance of the BufDataset.
So i just used the TXMLXSDExporter from the DataExport. At least for the
simple dataset i want to transfer it's ClientDataSet export format is
working fine.
thx,
--
Dimitrios Chr. Ioannidis
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