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Understanding CursorAdapter methods
Message
Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Versions des environnements
Visual FoxPro:
VFP 9 SP1
Divers
Thread ID:
01475311
Message ID:
01475352
Vues:
27
>This works for me:
>
>
>nAutoRefreshConn=SQLSTRINGCONNECT("DRIVER=SQL Server;SERVER=(local);Trusted_Connection=Yes;DataBase=TestDB")
>
>IF nAutoRefreshConn > 0
>   oCA=CREATEOBJECT("CA_SCOPE_IDENTITY")    
>   oCA.DataSource = nAutoRefreshConn
>   IF oCA.CursorFill(.t.)
>      BROWSE NORMAL
>      IF TABLEUPDATE(1, .t.)
>          BROWSE NORMAL
>      ELSE
>         AERROR(aaa)
>         MessageBox(aaa[2])
>      ENDIF
>   ELSE
>      AERROR(aaa)
>      MessageBox(aaa[2])
>   ENDIF
>ENDIF
>
>
>DEFINE CLASS CA_SCOPE_IDENTITY AS CursorAdapter 
>     DataSourceType = [ODBC]
>     Alias = "cTest"
>     BufferModeOverride = 5
>     SelectCmd = "select * from TestTable"
>     CursorSchema="Id I, name Varchar(20)"
>     UseCursorSchema= .T.    
>     Tables = "TestTable"
>     UpdatableFieldList="name"
>     UpdateNameList="Id TestTable.Id, name TestTable.Name"
>     KeyFieldList="Id"  
>     AutoUpdate = "Id"
> 
> 
>    PROCEDURE BeforeInsert(cFldState, lForce, cInsertCmd)
>
>            IF LEN(ALLTRIM(this.AutoUpdate))>0  
>                cInsertCmd = cInsertCmd + ;  
>                    "; DECLARE @id int; SELECT @id = SCOPE_IDENTITY()" + ;  
>                    "; EXEC Get_ValHelper @id, ?@" + ;  
>                    this.Alias + "." + ALLTRIM(this.AutoUpdate)  
>            ENDIF  
>            ?    
>            ? PROGRAM()    
>            ? "cInsertCmd=",cInsertCmd    
>    ENDPROC     
>ENDDEFINE
>
>
>
>In SQL Server:
>
>CREATE DATABASE TestDB
>GO
>USE TestDB
>GO
>CREATE TABLE TestTable (Id int IDENTITY(1,1), Name varchar(20))
>GO
>create procedure Get_ValHelper 
>(
>@in Int,
>@out int OUTPUT
>)
>AS 
> BEGIN
>    SET NOCOUNT ON
>    SET @out = @in
> END
>GO
>
One more question, please. I don't have the ? PROGRAM() line in my code. It is not necessary, right?
"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
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