Re: [Zope3-dev] Yet Another Relations (aka Reference) Engine...

2005-11-13 Thread Helmut Merz
Am Sonntag, 13. November 2005 12:07 schrieb Jean-Marc Orliaguet: > Helmut Merz wrote: > >Anyway, what we are talking about are not "references". > > The approach is quite different: references start from the > objects themselves that they connect to other objects

Re: [Zope3-dev] Extrinsic references

2005-11-13 Thread Helmut Merz
Am Samstag, 12. November 2005 17:15 schrieb Jim Fulton: > We have a *simple* facility for managing references between > objects extrinsically. See: > > > http://svn.zope.org/Sandbox/zc/extrinsicreference/extrinsicref >erence.txt?view=markup > > If there is sufficient interest, we plan to move t

Re: [Zope3-dev] Yet Another Relations (aka Reference) Engine...

2005-11-13 Thread Helmut Merz
Am Samstag, 12. November 2005 23:13 schrieb Jean-Marc Orliaguet: > Helmut Merz wrote: > >Maybe there is a better word for this kind of 'relation'? > > > >Helmut > > I don't know. I think you have to start from a definition that > is not depende

Re: [Zope3-dev] Yet Another Relations (aka Reference) Engine...

2005-11-12 Thread Helmut Merz
Am Samstag, 12. November 2005 20:00 schrieb Jean-Marc Orliaguet: > Helmut Merz wrote: > >Am Samstag, 12. November 2005 18:00 schrieb Jean-Marc Orliaguet: > >>My > >>impression is that you are thinking of a reference engine > >>rather than a relation engi

Re: [Zope3-dev] Yet Another Relations (aka Reference) Engine...

2005-11-12 Thread Helmut Merz
Am Samstag, 12. November 2005 18:00 schrieb Jean-Marc Orliaguet: > The good thing about IntIds is that it leaves the objects > untouched, the bad thing is that it creates a hard coupling > between the integer id that is used to *refer* to the object > and the key that is used to *represent* the ob

Re: [Zope3-dev] Yet Another Relations (aka Reference) Engine...

2005-11-11 Thread Helmut Merz
Am Freitag, 11. November 2005 17:26 schrieb Jean-Marc Orliaguet: > if the relation is symmetrical, there are 2 relations: > > A is like B > > means: > >A resembles B > > and > >B resembles A( or A __ is resembled by __ B ) > > which you can express as a compound predicate: > >

Re: [Zope3-dev] Yet Another Relations (aka Reference) Engine...

2005-11-11 Thread Helmut Merz
Am Freitag, 11. November 2005 16:11 schrieb Jean-Marc Orliaguet: > Hi Helmut! Hi Jean-Marc, thanks for your remarks, just before going into more detail: My primary concern was the API - it would really fine if there could be a simple (as simple as possible but not simpler) standard set of (lo

[Zope3-dev] Yet Another Relations (aka Reference) Engine...

2005-11-11 Thread Helmut Merz
Hi, there are quite a few solutions out there in the Zope world that allow the management of relations or references between objects. So I have been working with the reference engine provided by Archetypes (as part of Plone) for nearly two years now; and I also had a look at some proposals on