[infinispan-dev] new Infinispan Query API - ISPN-194

[Galder Zamarreño]

On Apr 4, 2011, at 6:23 PM, Sanne Grinovero wrote:

> </snip>
> 
> there's one catch:
> when searching for a class type, it will only include results from
> known subtypes. The targeted type is automatically added to the known
> classes, but eventually existing subtypes are not discovered.
> 
> Bringing this issue to an extreme, if the query is not targeting any
> type, and no indexed types where added to the grid (even if some exist
> already as they might have been inserted by other JVMs or previous
> runs), all queries will return no results.
> How to solve this?
> - class scanning?

Nope, too expensive.

> - explicitly list indexed entities in Infinispan configuration?

No

> - a metadata cache maintaining a distributed&stored copy of known types

That sounds more appealing. It could be a good middle ground until Search can search for types.

> - search for types in the index :)  would be nice, but the current
> design in Search mandates to know the entities first to know how the
> indexes are named. without name I can't open the index, but maybe we
> could have the user specify the index names instead of all entity
> classtypes.
> 
> Feedback on the API is more urgent than to solve this, so it could
> make it for Infinispan 5 Beta1.
> 
> Cheers,
> Sanne
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--
Galder Zamarreño
Sr. Software Engineer
Infinispan, JBoss Cache