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Subject: Re: [V4RB] VDatabase.ErrNumber question
Author: Ruslan Zasukhin
Posted: 2001/08/31 16:01:17
 
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on 8/5/01 0:43, Charles Yeomans at yeomans /at/ desuetude DOT com wrote:

> It's attached. Sorry I didn't strip it down; it's an example project for the
> V4RB tutorial in progress, by the way.
>
> To see the problem, run the project; create a new db (see File menu). Open
> the Find window and attempt to search for a record by date. This will cause
> the Valentina error (I marked the offending line; it's in
> FindWindow.SQLString; look for the comment //ERROR: "WHERE " should be "
> WHERE ").
>
> I tried it running under OS 9 and OS X and had the same problem.
>
Hi Charles,

if you set debug level 2, you will see that BEFORE you call constructor of
VException you do call

c = nil

i.e destructor of Cursor, and last CLEAR db.err of course.

I think you need to change a little API VException.
Send to it not db ref, but Err, and optional error string.



> On Saturday, August 4, 2001, at 01:38 PM, Ruslan Zasukhin wrote:
>
>> on 8/4/01 18:51, Charles Yeomans at yeomans@desuetude.com wrote:
>>
>>> I'm having a problem with the code below.
>>>
>>> c = app.db.SQLSelect(SQLString) If c = nil or app.db.ErrNumber <> 0 then c =
>>> nil Raise new ValentinaException(app.db, "FindWindow.FindButton.Action") End
>>> if
>>>
>>> SQLString is a bad string which causes Valentina to throw error 602. When I
>>> step through the code into the ValentinaException constructor, app.db shows
>>> ErrNumber 0.
>>>
>> You mean that at first it show error 602 but after several steps become zero
>> ?
>>
>> Or it become zero when you step into constructor ?
>>
>> Probably when you step into constructor it is executed call to V4RB (I think
>> this is because RB try obtain new reference)
>>
>> Send me something to reproduce.
>>
>> as run around: obtain .Err into local variable, and send it to function.
>>

--
Best regards,
Ruslan Zasukhin

-------------------------
Paradigma.

e-mail: ruslan /at/ paradigmasoft DOT com
web : http://www.paradigmasoft.com

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