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VFP cursor to ADODB.RecordSet
Message
 
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Versions des environnements
Visual FoxPro:
VFP 9 SP1
Divers
Thread ID:
01135897
Message ID:
01135907
Vues:
13
I see a DFB2Rs function in MereMortals written by Ken Levy. I'm not sure if I can post it here freely (may be copyright issues). Hopefully Ken can clarify this.

>I'm not able to find this answer anywhere. I've done a lot of code that takes an ADO recordset and converts it to a VFP cursor, but now I've got to find an easy way to go the other direction. Given a VFP cursor convert it directly to a recordset.
>
>This code goes from RS to Cursor:
>
>
>public oRS as ADODB.RecordSet, oCommand as ADODB.command
>
>#DEFINE ADINTEGER   3
>#DEFINE ADCHAR    129
>
>oRS = CreateObject( "ADODB.RecordSet" )
>oRS.CursorLocation = 3
>ors.LockType = 3
>oRS.Fields.Append( "c1", ADCHAR, 100 )
>oRS.Fields.Append( "i1", ADINTEGER, 4 )
>oRS.Open()
>
>oRS.AddNew()
>oRS.Fields("c1").Value = "test1"
>oRS.Fields("i1").Value = 1
>
>oRS.AddNew()
>oRS.Fields("c1").Value = "test2"
>oRS.Fields("i1").Value = 2
>
>oRS.MoveFirst()
>do while ! oRS.EOF()
>   ? alltrim( oRS.Fields("c1").Value ), oRS.Fields("i1").Value
>   oRS.MoveNext()
>enddo
>
>public oCursorAdapter as CursorAdapter
>
>if ( used( "testthis" ) )
>   use in testthis
>endif
>
>oCursorAdapter = createobject( "cursoradapter" )
>oCursorAdapter.DataSourceType ="ADO"
>oCursorAdapter.Alias = "testthis"
>
>oCursorAdapter.DataSource = oRS
>
>? oCursorAdapter.CursorFill( .f., .f., 0, oRS )
>
>select testthis
>scan
>   ? alltrim( c1 ), i1
>endscan
>
>
>this doesn't generate a RS:
>
>
>create cursor testthis ( i1 i, c1 c(10), t1 t, m1 m )
>insert into testthis values ( 1, "test 1", datetime(), "this is my pretty memo" )
>insert into testthis values ( 2, "test 2", datetime(), "this is my prettier memo" )
>
>oRS = CreateObject( "ADODB.RecordSet" )
>oRS.CursorLocation = 3
>oRS.LockType = 3
>
>oCursorAdapter = createobject( "cursoradapter" )
>oCursorAdapter.DataSourceType ="ADO"
>oCursorAdapter.DataSource = oRS
>? oCursorAdapter.CursorAttach( "testthis", .t. )
>
>oRS.MoveFirst()
>do while ! oRS.EOF()
>   ? alltrim( oRS.Fields("c1").Value ), oRS.Fields("i1").Value
>   oRS.MoveNext()
>enddo
>
>
>Ideally I need the RS to construct its field collection structure directly from the cursor structure and then push the data into the RS. The CursorAttach() method returns .t. but oRS is pretty much an empty shell. What am I doing wrong/missing? I don't really want the run a select, it doesn't have to be updateable, it's just a RS that we are passing from a VFP COM object over to an ASP page.
If it's not broken, fix it until it is.


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