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Stéphane Lecorné
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 Posted: Tue Mar 02, 2004 1:49 pm Post subject: Synchronisation de deux TClientDataSet |
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Hi,
I'm working on an network software with Delphi. I use on the server some
TDateSetProvider objects, and TClientDataSet objetcts on the client.
When two differents windows use datas from the same database table, I use
two TClientDataSet objects based on the same table (same provider on the
server) in order not to get bad effects, like filter conflicts. I would like
to refresh the others TClientDataSet when datas are updated on one of them.
I imagine some data structures to send messages to the TClientDataSet when
they have to refresh, but as this is a general purpose problem, I can
imagine that some existing objects permit that whithout additionnal
developpment.
After that, I'll consider to permit refreshes on a client when datas are
updated on another.
Thank you if you know a solution to my problem !
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Stéphane Lecorné
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| Posted: Tue Mar 02, 2004 3:58 pm Post subject: Re: Synchronisation de deux TClientDataSet |
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I received the answer on another forum, and it partially answer my problem.
There is a CloneCursor method on the TClientDataSet that synchronize the two
DataSets.
But if an SQL query reads datas from a table that has been modified by a
TClientDataSet, there is not any synchronization...
Maybe someone know how to resolve this problem ?
Thank you.
Stéphane.
"Stéphane Lecorné" <slecorne_ (AT) _itronic (DOT) com> a écrit dans le message de
news:404490e3$0$29948$626a14ce (AT) news (DOT) free.fr...
| Quote: | Hi,
I'm working on an network software with Delphi. I use on the server some
TDateSetProvider objects, and TClientDataSet objetcts on the client.
When two differents windows use datas from the same database table, I use
two TClientDataSet objects based on the same table (same provider on the
server) in order not to get bad effects, like filter conflicts. I would
like
to refresh the others TClientDataSet when datas are updated on one of
them.
I imagine some data structures to send messages to the TClientDataSet when
they have to refresh, but as this is a general purpose problem, I can
imagine that some existing objects permit that whithout additionnal
developpment.
After that, I'll consider to permit refreshes on a client when datas are
updated on another.
Thank you if you know a solution to my problem !
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