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Jim Melsom
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 Posted: Thu Aug 21, 2003 2:48 am Post subject: TDataSet Question |
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Couple of things I'm trying to figure out. The dataset class I'm
developing works OK, and now I want to add filters to it.
Does anyone know the "right" way to implement filters in a class derived
from TDataSet? Which methods should be overridden?
Is there a class to evaluate filter expressions for datasets?
Thanks for any ideas.
Jim
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Remy Lebeau (TeamB)
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| Posted: Thu Aug 21, 2003 8:29 am Post subject: Re: TDataSet Question |
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"Jim Melsom" <jmm (AT) uniserve (DOT) com> wrote
| Quote: | Does anyone know the "right" way to implement filters in a
class derived from TDataSet? Which methods should be overridden?
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I too am writing my own custom TDateSet but have not found *any* information
on implementing filtering, and the VCL source code I have looked at is
geared too much for BDE specifically to be useful.
| Quote: | Is there a class to evaluate filter expressions for datasets?
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There is an undocumented class named TExprParser which the native
TClientDataSet uses internally. It is defined in the DBCommon unit. But I
do not how it is used.
Gambit
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Remy Lebeau (TeamB)
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| Posted: Thu Aug 21, 2003 8:49 pm Post subject: Re: TDataSet Question |
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"Remy Lebeau (TeamB)" <gambit47 (AT) yahoo (DOT) com> wrote
| Quote: | I too am writing my own custom TDateSet but have
not found *any* information on implementing filtering
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If you figure it out, let me know. I need information on searching as well.
Gambit
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Jim Melsom
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| Posted: Fri Aug 22, 2003 3:17 am Post subject: Re: TDataSet Question |
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Remy Lebeau (TeamB) wrote:
| Quote: | If you figure it out, let me know. I need information on searching as well.
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OK, will do.
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Remy Lebeau (TeamB)
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| Posted: Fri Aug 22, 2003 5:30 pm Post subject: Re: TDataSet Question |
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"Ralph Kazemier" <ralph.kazemier (AT) jess (DOT) nl> wrote
| Quote: | Note to yourself? 
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Meaning?
Gambit
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Remy Lebeau (TeamB)
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| Posted: Fri Aug 22, 2003 7:20 pm Post subject: Re: TDataSet Question |
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"Peter Agricola" <spammy (AT) spammer (DOT) com> wrote
| Quote: | You replied to yourself that yourself should tell yourself that if
yourself
would find a solution yourself must not keep it for yourself but also tell
it to yourself so that yourself can also benefit from it. Or something
like
that <g>.
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I replied to my statement of not finding any information asking Jim to
contribute if he runs across anything.
Gambit
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Peter Agricola
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| Posted: Fri Aug 22, 2003 8:46 pm Post subject: Re: TDataSet Question |
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"Remy Lebeau (TeamB)" <gambit47 (AT) yahoo (DOT) com> schreef in bericht
news:3f46795e$1 (AT) newsgroups (DOT) borland.com...
| Quote: |
I replied to my statement of not finding any information asking Jim to
contribute if he runs across anything.
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Of course we know what you meant.
No offence, but do you ever laugh? Or is it the dutch humour?
Peter
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