problems to destroy a cursor

[-= JB =-]

Thanks for the info and help Ruslan.

-=>JB<=-



On Mar 24, 2008, at 12:51 PM, Ruslan Zasukhin wrote:

> On 3/24/08 6:59 PM, "-= JB =-" <sundown at pacifier.com> wrote:
>
>> I am using Revolution 2.9.0 and Valentina 3.5.1
>>
>> In the Reference PDF is states the below concerning a cursor from a
>> SQL command.
>>
>> Note: When finished with a cursor, you must assign it the value nil
>> to destroy it and free
>> memory.
>>
>> Does this mean I need to somehow nil the cursor before I destroy it
>> or are they trying
>> to say I need assign it a value of nil by destroying it which will
>> free the memory.
>
> I think this text is copied from some other OO ADK.
> Revolution do not need nil pointers.
>
>> I am able to get a cursor ref number and the following seems to
>> destroy it but I am
>> not able to check and see if it has been destroyed.
>>
>> get VCursor_Destructor(curs)
>
> After this call it must be destroyed.
>
> TIP: use Valentina_DebugLevel(3) to force production of V4REV_Log  
> file,
>  this file may contain some info about errors in params or such.
>
>> How can I check to see if the cursor has been destroyed and can
>> it cause problems to destroy a cursor that was already destroyed.
>
> You cannot see I think.
>
> Aha, I am wrong. Yes while you are in DEBUG LEVEL,
>     Valentina for Revolution VALIDATES all refs.
>     so if you call some V4REV method with wrong CursorRef,
>     you will get such error code back in code,
>     and in the log file also.
>
>
>> Also the reference pdf mentions another way to destroy a cursor
>> is to use the following:
>>
>> get Cursor_Destroy(curs)
>>
>> When I use the above to destroy the cursor I get an error message
>> when the
>> script executes.
>
> -- 
> Best regards,
>
> Ruslan Zasukhin
> VP Engineering and New Technology
> Paradigma Software, Inc
>
> Valentina - Joining Worlds of Information
> http://www.paradigmasoft.com
>
> [I feel the need: the need for speed]
>
>
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