[infinispan-dev] Query and dynamic discovery of types

[Mircea Markus]

Thanks for the heads up!

It's not clear for me what the functional impact of ISPN-2143 is: incomplete query results?

On Sep 19, 2013, at 11:42 AM, Sanne Grinovero <sanne at infinispan.org> wrote:

> For Infinispan 6.0 we decided that the following issue is a bloker:
> 
> https://issues.jboss.org/browse/ISPN-2143 - Improve how different
> indexed caches sync up on new indexed types
> 
> It really is important, and I'm a bit concerned that it was moved to
> CR1 as it might not be trivial: for embedded query it needs to store a
> reference to class definitions (potentially with classloader
> information too), and for remote queries it needs to distribute the
> indexing configuration schema.
> 
> Also I'm wondering if we shouldn't go even further: in Hibernate
> Search the internal complexity of handling newly appearing types
> (rather than statically configured types) is very hard.
> 
> In the next version we might need to drop this, so it would be great
> if we could stabilize the Infinispan Query API right now in such a way
> that it won't need this feature anymore.
> 
> I proposed it years ago but it was rejected because of usability
> concerns.. would you still reject the idea to simply list the indexed
> types at configuration time? If so, I think we need to explore
> alternative solutions.
> 
> Note that I only want to remove the dependency to dynamic _Class_
> definitions being added at runtime; we will still support dynamically
> defined types so in case you need extreme flexibility like with remote
> queries that will work, as long as you provide a smart bridge able to
> reconfigure itself based on the dynamic metadata; I think that's a
> cleaner approach as you would be directly in control of it rather than
> having to workaround a design which was thought for a different
> purpose.
> 
> Sanne
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Cheers,
-- 
Mircea Markus
Infinispan lead (www.infinispan.org)