Blob compressing

[Stan Busk]

All functions fail for me here. If I use VBLOB.FromFile() what I get  
with VBLOB.ToFile() is just part of the original file. My cod is quite  
clean, I am storing pictures, I get the same effect or worse on all of  
them. Anything I should know?

Stan


> On 10/27/09 8:08 PM, "Stan Busk" <maxprog at mac.com> wrote:
>
> Hi Stan,
>
>> Ok but it looks like you can't set that as part of the constructor:
>> http://www.valentina-db.net/dokuwiki/doku.php?id=valentina:products:adk:api:vb
>> lob_class:construction_methods
>>
>> I guess I will have to use: fldBlob.IsCompressed = true like:
>>
>>         myDatabase.myTable.myBlobField.IsCompressed = True
>
> You need SET this only once!
> No need assign it before each WRITE to BLOB.
>
> I think you can try assign this property in your constructor.
>
>>         myDatabase.myTable.myBlobField.WriteRawData( myData )
>>         myDatabase.myTable.UpdateRecord()
>>         myDatabase.myTable.Flush()
>>
>> Is this correct? I guess it is...
>
> In fact compression for raw BLOB field on DB level do not have big  
> sense.
> Because you self can easy compress/uncompress raw data.
>
> Compression in Valentina was added mainly for TEXT field.
> Here it is very important, because engine yet need to build index,
> So it should self be able do compression of TEXT.
>
>
>
>> Stan
>>
>>> On 10/27/09 3:46 PM, "Stan Busk" <maxprog at mac.com> wrote:
>>>
>>> Hi Stan,
>>>
>>>> Is it possible to compress the data in a blob field? I mean, make
>>>> Valentina do it?
>>>
>>> Yes of course.
>>>
>>> Just specify fCompressed flag for a BLOB field.
>
> -- 
> 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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