[V4Rb] VServer and VBlob field

[Ivan Smahin]

Hello Charles,

Saturday, February 25, 2006, 7:35:08 AM, you wrote:

> On Feb 24, 2006, at 3:57 PM, Ivan Smahin wrote:

>> Hello Charles,
>>
>> Friday, February 24, 2006, 7:39:31 PM, you wrote:
>>
>>> On Feb 24, 2006, at 7:25 AM, Ruslan Zasukhin wrote:
>>
>>>> On 2/24/06 4:47 AM, "Charles Yeomans" <yeomans ÎÁ desuetude.com> wrote:
>>>>
>>>>> Are there known problems with VBlob fields and cursors and VServer
>>>>> 2.1?
>>>>>   I'm seeing some, and I am limited in my debugging by the lack of a
>>>>> working version of VStudio.
>>>>
>>>> Can you give more detailed.
>>>>
>>>> If look into Mantis I do not see reports about Vserver + BLOB.
>>
>>
>>> Here's the problem I am seeing.  After calling WriteData, I 
>>> immediately
>>> call ReadData, which returns the string just written.  After calling
>>> VCursor.Update, I build a new cursor.  Now ReadData returns "" --  for
>>> most records.  For records that had data written to them using V4Rb
>>> 2.0, WriteData and VCursor.Update does modify the data, but I cannot
>>> read it later with a cursor generated by a query of the form "SELECT
>>> recID, * ..."  I can read that data with a query of the form "SELECT
>>> fieldName..."", though.
>>
>>> Furthermore, the VBlob field I created with segment size 128 appears 
>>> to
>>> actually have segment size 1024 when i look at the field object in the
>>> debugger.  Also, IsNull = true and IsNullable = true, despite the 
>>> claim
>>> in the documentation that VBlob fields are not nullable.
>>
>>
>> You  should try 2.2 (last build). Seems the problem you have described
>> is gone away there.

> Unfortunately it remains in 2.2.  In the client-server version, I see 
> the following problem.  I can write to a VBlob field.  If I then 
> retrieve the single record, I can read the Blob contents.  If I 
> retrieve more than one record, then the VBlob field either returns "" 
> from ReadData, or it returns data for the wrong record.  I have entered
> it into Mantis.

Ok, could you send me some little project for testing?

-- 
Best regards,
 Ivan                            mailto:ivan_smahin ÎÁ valentina-db.com