> The concept of a filter is that it performs "its operation" on
> storage and then
> reverses the "operation" on display. Look at how BLR is stored in
> triggers for
> example, this is a a filter..... displaying of textual blobs is
> also a filter...
> By this I mean that Firebird has a few built in filters that
> understand how to
> convert stuff on the way in and out. This could be extended......
>
> Regards
> Paul
>

For all those people who want to store bitmaps and like in blobs - even word
documents or other non pure text formats in blobs, wouldn't be great to have
a zip filter over the top of such blobs? So you could just set a subtype of
te subtype or some such. That way all the controls (e.g. IBO or IBX image
datalinked controls would still be able to read and write image binaries but
the filter would compress, uncompress them on write and read operations.
Alan