Re: course <-> topic, take 3

["Alexey Parshin" <alexeyp@gmail.com>]

2006/10/14, Ilya A. Volynets-Evenbakh <ilya@total-knowledge.com>:
> Yeap.
> All the subobjects will be shared anyways. If someone
> wants to create same course - he creates his own (and we may
> actually create tools for doing complete copy, like with
> any other Topic, as we discussed on IRC).
>
> Alexey Parshin wrote:
> > May be, we shouldn't allow to share TLT..
> >
> > 2006/10/14, Ilya A. Volynets-Evenbakh <ilya@total-knowledge.com
> > <mailto:ilya@total-knowledge.com>>:
> >
> >     Alexey Parshin wrote:
> >     > Well, since any topic can be made top-level topic that means - any
> >     > topic may become a course by a simple connections transformation.
> >     And problem here is evident - a topic may be TLT for one course,
> >     yet a
> >     subtopic for another one.
> >     How do you expect to handle that.
> >     > If we need an extra fields - that may be done with the
> >     > topic_description table, or something similar, that relates only to
> >     > topic and nothing else.
> >     Maybe, if that's appropriate for the case.
> >     >
> >     > 2006/10/14, Ilya A. Volynets-Evenbakh <ilya@total-knowledge.com
> >     <mailto:ilya@total-knowledge.com>
> >     > <mailto: ilya@total-knowledge.com
> >     <mailto:ilya@total-knowledge.com>>>:
> >     >
> >     >     Actually let me add another thing:
> >     >     this condition also applies to other tables, relating to the
> >     course.
> >     >     I.E. if you need separate treatment/different data in ACLs
> >     >     or some such depending on whether topic they link to is TLT
> >     >     or not, we'll do the same.
> >     >
> >     >     Ilya A. Volynets-Evenbakh wrote:
> >     >     > I'll accept that on one condition: this flag is going to be
> >     >     > the only field that differentiates topic from course.
> >     >     > I.E. if you feel the need to add more fields, that apply only
> >     >     > to TLTs, you will move them out to separate table.
> >     >     >
> >     >     > Alexey Parshin wrote:
> >     >     >
> >     >     >> A simple logical conclusions.
> >     >     >>
> >     >     >> 1) Most of the properties of the course matching to the
> >     >     properties of
> >     >     >> the topic.
> >     >     >> 2) The difference between topic and course is the connections
> >     >     to other
> >     >     >> objects
> >     >     >> 3) Since any object can be connected to almost any other,
> >     the
> >     >     course
> >     >     >> connections is just an extended version of topic connection.
> >     >     >>
> >     >     >> So, from any logical point, course is topic. We don't need to
> >     >     have a
> >     >     >> separate object in the database for this. We may have  a flag
> >     >     >> 'Top-level' in the topic, that allows an extra functionality
> >     >     for the
> >     >     >> course.
> >     >     >>
> >     >     >
> >     >     >
> >     >
> >     >     --
> >     >     Ilya A. Volynets-Evenbakh
> >     >     Total Knowledge. CTO
> >     >     http://www.total-knowledge.com
> >     >
> >     >
> >     >
> >     >
> >     > --
> >     > Alexey Parshin,
> >     > http://www.sptk.net
> >
> >     --
> >     Ilya A. Volynets-Evenbakh
> >     Total Knowledge. CTO
> >     http://www.total-knowledge.com
> >
> >
> >
> >
> > --
> > Alexey Parshin,
> > http://www.sptk.net
>
> --
> Ilya A. Volynets-Evenbakh
> Total Knowledge. CTO
> http://www.total-knowledge.com


--
Alexey Parshin,
http://www.sptk.net