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Recylcling deleted records in CursorAdapter
Message
De
16/03/2003 08:07:29
Km Kwun
Eastop Consultants Limited
Nt, Hong Kong
 
 
À
16/03/2003 05:33:40
Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Divers
Thread ID:
00766142
Message ID:
00766294
Vues:
19
Aleksey,

Thank you very much for the code.

KM

>>When using CursorAdapter with local VFP data, can I recycle deleted records in an update action?
>>
>
>Yes, you can.
>
>
>CLOSE DATABASES all
>CLEAR
>SET MULTILOCKS ON
>
>CREATE CURSOR foo (f1 I)
>INDEX ON DELETED() TAG deleted
>SET ORDER TO 0
>
>INSERT INTO foo values(1)
>INSERT INTO foo values(2)
>INSERT INTO foo values(3)
>
>GO top
>DELETE
>GO BOTTOM
>delete
>
>?ALIAS()
>LIST
>
>LOCAL oCA as CursorAdapter
>oCA=CREATEOBJECT("CursorAdapter")
>oCA.Alias="test"
>oCA.DataSourceType="NATIVE"
>oCA.SelectCmd="select * from foo where !DELETED()"
>oCA.InsertCmd="MyInsert(this)"
>*oCA.BufferModeOverride= 5
>
>
>oCA.CursorFill()
>
>SELECT (oCA.Alias)
>?ALIAS()
>LIST
>INSERT INTO (oCA.Alias) values(4)
>TABLEUPDATE(.F.)
>INSERT INTO (oCA.Alias) values(5)
>TABLEUPDATE(.F.)
>INSERT INTO (oCA.Alias) values(6)
>TABLEUPDATE(.F.)
>
>SELECT foo
>?ALIAS()
>list
>
>FUNCTION MyInsert(oCA as CursorAdapter)
>	SET ORDER TO deleted IN foo
>	GO BOTTOM IN foo
>
>	IF !EOF("foo") AND DELETED("foo")
>		REPLACE f1 WITH EVALUATE(oCA.Alias+".f1") IN foo
>		RECALL IN foo
>	ELSE
>		INSERT INTO foo VALUES(EVALUATE(oCA.Alias+".f1"))
>	ENDIF
>ENDFUNC	
>return
>
>
>
>Thanks,
>Aleksey Tsingauz.
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