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Re: Query kernel objectsOfClass

hi falko,
  ok then 
how do u think we should proceed then?

das



On Thu, 12 Apr 2001, Falko Braeutigam wrote:

> On Fri, 13 Apr 2001, Dasarathi wrote:
> > hi falko,
> >   we  want the query kernel to finally support OQL, SQL etc etc
> > and we thought we will start off with OQL.
> >   and we are not searching on this collection of objects,
> > we will mostly do pointer traversal.unless u store names of 
> > all objects in a table or something we cant retrieve 
> > without objectsofclass. once this  gets over then we can think
> > of better ways of doing it.
> >   if u think that objectsofclasses is very easy to implement why 
> > dont u write that code such that it is used by the kernel alone.
> 
> ???
> 
> Did I state anywhere that objectsOfClass is very easy to implement? I probably
> lost you here.
> 
> 
> Falko
> 
> > 
> > bye
> > das
> >   
> > 
> > On Thu, 12 Apr 2001, Falko Braeutigam wrote:
> > 
> > > On Wed, 11 Apr 2001, Dasarathi wrote:
> > > > The method objectsOfClass in externalDatabase is not 
> > > > implemented in ozone-6.1.I need it very much for our 
> > > > query kernel work to proceed.
> > > >   If someone has done it mail back
> > > 
> > > objectsOfClass() was a wrong way in the design of the API and should be finally
> > > removed from the API. If the query kernel needs this function (and surely many
> > > others that are not part of the native ozone API) then it has to implement it
> > > itself. This of course will make the query kernel depend on internal ozone data
> > > structures and APIs but this (in contrast to a ordinary client program) is no
> > > problem.
> > > 
> > > Besides, das, it seems that you are following the way to treat all objects of a
> > > class as a collection and apply the search on this class collection. Do you
> > > think this approach is flexible enough to serve as a base for all (at least
> > > many) query fron-ends? I mean, the Java object model itself doesn't have a
> > > possibility to treat all objects of a class as collection. Only SQL/OQL and
> > > related approaches do this...
> > > 
> > > 
> > > Falko
> > > -- 
> > > ______________________________________________________________________
> > > Falko Braeutigam                              mailto:falko@smb-tec.com
> > > SMB GmbH                                        http://www.smb-tec.com
> > > 
> > >
> -- 
> ______________________________________________________________________
> Falko Braeutigam                              mailto:falko@smb-tec.com
> SMB GmbH                                        http://www.smb-tec.com
> 
>