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Brent Rose
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 Posted: Sat Jul 26, 2003 1:58 am Post subject: Writing BLOB to cds field. |
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I cannot see what is going wrong with this attempt to modify a BLOB field -
any hints/suggestions appreciated!!
Modifying or inserting a record leaves the BLOB field as null regardless...
The cdsPhotographPImage field correctly reports as IsBlob = True, CanModify
= True.
The following code reports that eg 30k was copied to the field, but the
field remains "IsNull = True" immediately following the CopyFrom...
cdsPhotograph.Edit;
FieldStream := cdsPhotograph.CreateBlobStream(cdsPhotographPImage, bmWrite);
x := FieldStream.CopyFrom(PhotoStream, PhotoStream.Size);
ShowMessage('Copied = ' + IntToStr(x));
if cdsPhotographPImage.IsNull then
ShowMessage('is null');
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Brent Rose
Guest
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| Posted: Sat Jul 26, 2003 3:19 am Post subject: Re: Writing BLOB to cds field. |
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A case of looking in all the wrong places for a reason...
ANSWER: BLOB changes were posted immediately (as desired) - but one really
should wait till AFTER Free-ing the field BlobStream! It leads to some
bizarre behaviour otherwise....
Pardon me while I wipe the egg off my face... :-)
Brent Rose
[email]brentrose (AT) paradise (DOT) net.nz[/email]
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