Dan Haywood closed ISIS-573.
    Resolution: Won't Fix

> [WON'T FIX] To improve performance, set up caching of query results against 
> any entities that are immutable (ie ref data, ie have ImmutableFacet on them).
> ----------------------------------------------------------------------------------------------------------------------------------------------------------
>                 Key: ISIS-573
>                 URL: https://issues.apache.org/jira/browse/ISIS-573
>             Project: Isis
>          Issue Type: New Feature
>          Components: Core, Core: Objectstore: JDO
>    Affects Versions: objectstore-jdo-1.1.0, core-1.2.0
>            Reporter: Dan Haywood
>            Priority: Major
>             Fix For: 1.17.0
> In DN, this is done using:
> query.addExtension("datanucleus.query.results.cached", "true");
> query.addExtension("datanucleus.query.resultCache.validateObjects", "false");
> So, need to figure out how to set up these properties on queries by 
> repositories of immutable facets.   But this could probably be done 
> transparently.
> NB: for these cache results to hang around and not get garbage collected, 
> would also need to set the global config parm:
> datanucleus.cache.queryResult.type=strong
> ... its default value is weak.
> Further info at: 
> http://www.datanucleus.org/products/datanucleus/jdo/query_cache.html#datastoreCompilation

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