TBufDataset.IsEmpty what is that?
lazarus / 16-Databases

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lainz · 2020-12-21 15:23

Hi, what is the meaning and utility of TBufDataset.IsEmpty method?

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lainz · 2020-12-21 15:26

Because here says:
https://www.freepascal.org/docs-
html/current/fcl/db/tdataset.isempty.html

QuoteIsEmpty returns True if the dataset is empty, i.e. if EOF and
TDataset.BOF are both True, and the dataset is not in insert mode.

I was using this before saving to SQLite database to check there is
data to save in the buf dataset, but it fails sometimes saying it is
empty, I removed it and it saves the data in the database anyways, so
is strange for me.

Maybe because the data sometimes is in edit mode and not insert mode?

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cdbc · 2020-12-21 15:36

Hi
You can edit the source yourself, and when it works, submit a patch,
just a thought 
Regards Benny

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lainz · 2020-12-21 15:39

Quote from: cdbc on December 21, 2020, 04:36:36 pmHi
You can edit the source yourself, and when it works, submit a patch,
just a thought 
Regards Benny

Hi thanks, but I'm not sure for that I'm asking =)

I think I was using it wrong, I don't think it has a bug.

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lainz · 2021-01-28 17:09

Any ideas? This is making trouble with our project.

Something is wrong in the state of the bufdataset isEmpty. I can't
reproduce but it happens on our customers machines.

Sometimes is true and sometimes is false, even with the same number of
rows > 0