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From Alex Karasulu <akaras...@gmail.com>
Subject Re: [Schema refactoring] One step further
Date Wed, 21 Oct 2009 14:08:46 GMT
sounds good

On Wed, Oct 21, 2009 at 3:34 AM, Emmanuel Lecharny <elecharny@apache.org>wrote:

> Sorry for having been mute for the past few days, I was busy doing some
> documentatiuon for a client of mine... No fun :/
>
> Here is where I'm doing atm :
> - defining a SchemaManager class which will expose a set of methods to load
> schemas and schemaObjects
> - implementing it for the most common cases
> - using it in the server
>
> This is not really fast, as it leads to a lot of redefinitions, but once
> started, it won't be too complicated.
>
> In the mean time, there are a few points that need to be discussed. First
> of all, we should not anymore access the internal registries (AttributeType
> registry, etc) directly, but using the SchemaManager to do so. The idea is
> to protect them from concurrent access.
>
> So all the places in the server where we were getting a ref to these
> internal registries must now use the SchemaManager instead. (It should not
> be a big deal).
>
> Another point is that the SchemaManager will also be relative to a naming
> context? Right now, the only supported NamingContext will be the RootDSE.
> However, in the future, its hould be easy to define more than one
> SchemaManager and use them.
>
> Last, not least, any modification on the Registries will be done on a clone
> (the clone methods have already been committed), and if the Registries are
> still consistent, then the Registries will be swapped. That will protect
> them from a concurrent access (we will use the volatile keyword for that
> purpose). That also means we don't use ConcurrentHashMap for stored data in
> the intenal registries°;
>
> More code to come in the next few days...
>
> --
> --
> cordialement, regards,
> Emmanuel LĂ©charny
> www.iktek.com
> directory.apache.org
>
>
>


-- 
Alex Karasulu
My Blog :: http://www.jroller.com/akarasulu/
Apache Directory Server :: http://directory.apache.org
Apache MINA :: http://mina.apache.org

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