Plateforme Level Extreme
Abonnement
Profil corporatif
Produits & Services
Support
Légal
English
Show record counter of CA cursor
Message
 
 
À
09/12/2014 02:42:35
Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Versions des environnements
Visual FoxPro:
VFP 9 SP2
OS:
Windows Server 2012
Network:
Windows 2008 Server
Database:
MS SQL Server
Application:
Web
Divers
Thread ID:
01612016
Message ID:
01612052
Vues:
45
>>>>Hi,
>>>>I need to show "record" counter for the CursorAdapter cursor; for example, "Record 1 of 100."
>>>>I cannot use recno() because the cursor is indexed and recno() does not show in a sequential order.
>>>>I tried to add a "dummy" column to the CA cursor. But I get message that this operation is not allowed for buffered cursor. When I tried to set the buffering to 1 (using CURSORSETPROP("Buffering", 1, "CA_ALIAS") I get message that "Operation is not allowed for CursorAdapter"
>>>>The only option remaining (as far as I can think of) is to add a "dummy" column to the table and use it to assign sequential numbers. Even though the table is not very large, it would waste database space (this is SQL Server database).
>>>>Any suggestions on how else I can accomplish this?
>>>
>>>
>>>Instead of CURSORSETPROP("Buffering", 1, "CA_ALIAS") try to use CURSORSETPROP("Buffering", 3, "CA_ALIAS").
>>
>>Yes, changing from 1 to 3 allows the CURSORSETPROP() to be executed without an error. However, when I do ALTER TABLE ADD COLUMN ... I get error message that "Function is not supported on remote tables." So I am back to considering a "dummy" column.
>
>Why would adding a calculated field to the cursoradatper SQL Select waste DB space ?
>But if the cursor needs indeces, do you plan to update the recnum field on each setting order differently ?
>Could you use an Order by in the cursoradapter Select and stay with the recnum of the cursor ?
>(Usually your questions draw a clear picture for me, on this one I get a "not enough info" warning)

You are right that the calculated field added to the cursor of CA won't waste space. I meant that if I were to add a physical column to the SQL Server table, then it would be wasted. As I mentioned to Borislav, adding a calculated field to the SQL Select will require some changes to my base BIZ class. But as they say, if there is will there is a way :).
Thank you.
"The creative process is nothing but a series of crises." Isaac Bashevis Singer
"My experience is that as soon as people are old enough to know better, they don't know anything at all." Oscar Wilde
"If a nation values anything more than freedom, it will lose its freedom; and the irony of it is that if it is comfort or money that it values more, it will lose that too." W.Somerset Maugham
Précédent
Répondre
Fil
Voir

Click here to load this message in the networking platform