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ODBC cursoradapter - How to close QUICKLY
Message
De
08/12/2008 14:08:00
Cetin Basoz
Engineerica Inc.
Izmir, Turquie
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
01365873
Message ID:
01366050
Vues:
18
>>>I usually do not have reason to use cursoradapters that incrementally fetch data, but my client wants to be able to scroll through a huge SQL table in a grid, so here I am.
>>>
>>>In my form's dataenvironment I add a cursoradapter, and using the builder I give it my connection handle, query, max number of records to fetch at a time, select fetch remote data as needed, and left it pretty much like that. No updates will be done - this is strictly a lookup table.
>>>
>>>I drop a grid on the form and it works well when just opening the form and scrolling through records - it appears to fetch incrementally nicely.
>>>
>>>Now I go to close the form.
>>>
>>>3 or 4 minutes later, it actually closes. My assumption is the cursoradapter is pulling the rest of the records for some reason before closing.
>>>
>>>Keep in mind - during development my SQL data is out in internetland, so I do expect slow responses, but since I'm not telling the form to retrieve any more data or to update anything, I would expect closing the form to be fast/instant.
>>>
>>>I've tried a couple of things in the form Unload event to close the cursor, tell the cursoradapter not to fetch data, etc but apparently I haven't hit the right combination to make it close in a reasonable amount of time.
>>
>>William,
>>Have you tried with a private datasession and fetchAsNeeded = .T.?
>>Cetin
>
>It is set to FetchAsNeeded = .T.. I'm not sure if it is a private datasession. I need to look. Would that make a difference?

It might because I have observed that thier behavior was different with fetching (either it is default or private datasession ).
Cetin
Çetin Basöz

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