[V4Rb] VServer and VBlob field

[Charles Yeomans]

On Feb 24, 2006, at 7:25 AM, Ruslan Zasukhin wrote:

> On 2/24/06 4:47 AM, "Charles Yeomans" <yeomans at 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.


--------------
Charles Yeomans