At 11:11 AM 7/02/2005 +0100, you wrote:

>Hello,
>
>is there any documentation how to implement blob filters with Delphi?

No.

>"The Firebird Book" only refers to the InterBase Documentation, and this
>is only aimed at C developers. A search on firebird.sql and
>ibphoenix.com doesn't seem to provide any information on this.
>
>Well, perhaps I would be able to "translate" the C examples for me, but
>as the whole topic of blob UDFs is still somewhat confusing to me, I
>fear I won't be able to get it right.

Then blob filters won't be easier. They are just a specialised sort of UDF. UDFs are easy or hard, depending on your confidence with using the techniques - you have to get your feet wet. There are docs around re writing UDFs in Delphi, which will be helpful to get you experimenting. You can find them by using the Website search at the IBPhoenix site.

>Thanks for any hint

You might not have seen this C example that Paul Beach and Ann Harrison contrived for the Firebird Conference in 2003::
http://www.ibphoenix.com/main.nfs?a=ibphoenix&l=;PAGES;NAME='ibp_blob_filter'

./heLen