On Thu, 2006-10-05 at 07:41 +0200, Martin Schreiber wrote: > On Thursday 05 October 2006 00.38, Joost van der Sluis wrote: > > Hi all, > > > > I have plans to add an unidirectional dataset/query to sqldb. Thus one > > that isn't inherited from TDataset. This to improve performance, for for > > example cgi-like programs, in which iterating back and forth through a > > database isn't necessary. > > > It should inherit from TDatset but not from TBufDataset IMHO to allow to use > the existing DB components in Lazarus and MSEgui (persistent fields, data > display widgets, field->parameter link, calculated fields...).
I meant one that isn't inherited from TBufDataset, sorry for that mistake. > > But while working on this, I discovered that very much code from > > TSQLQuery could be exactly copied to this new class. > > > > Now I'm thinking about using an interface, to avoid double code. But I > > don't know what effect that has on run-time performance. I mean, the > > idea was to make if faster ... > > > A very good idea! It can then be implemented by a common worker class. > TSQLConnection and TSQLTransaction should be independent of TSQLQuery and > TSQLQuery should get its own unit. Can you explain to me how I should construct this worker-class? As Michael said, my solution won't work... > I use not reference counted (corba style) interfaces very often in > MSEide+MSEgui and I am happy with them. I would even be more happy without > Mantis 6036 and 6690... _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
