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From "Ersin Er" <>
Subject Re: [ApacheDS] Schema Subsystem Redesign Objectives
Date Wed, 29 Nov 2006 19:59:52 GMT
On 11/29/06, Alex Karasulu <> wrote:
> Hi guys,
> We have the design in mind and it looks good.  Now it's time to start
> the work.  I cannot see the whole path to get this done but here's what
> I see into the next few weeks.
> 1a). We need to implement a meta schema to represent schema entities as
> entries in the server under ou=schema area.  Emmanuel already started on
> this.
> 1b). We need parsers for interchanging LDAP description formats for
> schema entities into Schema objects.  Ersin already started working on
> these parsers.
> 1a and 1b are concurrent.
> 2). Need to write the special partition for ou=schema which uses a
> subset of schema information to bootstrap itself and initialize the
> schema subsystem.
> 3). Write the schema subsystem facade and initialization code to load
> all entities into their respective registries.  Also need to figure out
> how to maintain and access registries for specific SAAs.  Basically we
> need a method to lookup a registry based on DN.  This will find the SAA
> associated with the DN, and lookup the associated registries with that SAA.
> 4a). Start writing code to inject subschemaSubentry attributes into
> entries falling under SAAs defined by the subtree specifications of
> schema subentries.

FYI, this has already been implemented in the SubentryService (by Alex
mostly). I may add a few tests to make it sure it works correctly.

> 4b). Need to start working on virtualization code that injects schema
> description attributes into schema subentries.
> 4a and 4b are concurrent.
> 5) Rewrite schema checking code to properly apply schema information to
> changes to DIT and respond accordingly.  We will use the full LDAP
> schema capabilities to contrain and manage the DIT.
> Right now this is as far as I can foresee in terms of general steps.
> Regards,
> Alex


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