On Wed, 19 Oct 2011, Graeme Geldenhuys wrote:
Hi,
Just over 3 years ago I asked about FPC support for creating 3-tier
database applications. The answer was basically: it's not possible
(unless you roll your own Midas / Datasnap code).
TClientDataset also missed some vital features, and the state of
WebServices was also not complete.
Here is the original message thread:
http://www.mail-archive.com/lazarus@lazarus.freepascal.org/msg00861.html
So after 3 year, what has changed? Is the missing parts already
implement, and is a Midas / Datasnap style 3-tier application possible
with FPC?
Out of the box: no.
I also believe Borland/CodeGear/Embarcadero released the Midas source
code in post Delphi 7 versions. Anybody have success in compiling that
code with FPC? Yes I know you can't release such code, and yes I know
Datasnap will probably only work with Windows. But from my Kylix 3
manual it mentions TSoapConnection and WebServices for multi-tier
development, so was wondering if FPC had no alternative, if I could
possibly compile that Kylix 3 code using FPC - anybody tried this before?
Midas is written in C++, so that's not going to happen.
I got sidetracked on web-development, so the 3-tier support per-se is missing.
OTOH the web-development part has resulted in a ready-to-use packet transport
layer. It's inefficient though, since it uses JSON or XML, but that can
easily be adapted to support a 'binary' packet.
And it would only work with HTTP as the transport layer.
Michael.
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