[hibernate-dev] [OGM] MongoDB JPQL Query: comparison with object fails

[Gunnar Morling]

Hi,

Querying on references to other entities has not been taken into account so
far, i.e. comparisons work only for attributes of the entity itself. I
think for Mongo we also don't yet support querying on attributes of
embedded entities (it is supported by the Lucene parser backend).

Could you open an issue in JIRA for this?

Thanks,

--Gunnar





2013/10/20 Guillaume SCHEIBEL <guillaume.scheibel at gmail.com>

> Hello,
>
> I found an problem with the MongoDBComparisonPredicate. When I try to make
> a jpql query with an object comparison [1]
>
> The value (here a SolutionType instance) is "directly" passed to the
> MongoDBComparisonPredicate which tries to use it as it is, in a DBObject
> query.
>
> The point is, the refering property is solutionType_id (which is correct)
> but instead of using the parameter id, it's using the complete object [2]
> The MongoDB drivers returns that it can't serialize the type passed in
> parameter..
>
> There is something I don't get, why for basic CRUD operations do we use
> dehydrated object and for queries as well ? Object parameter (all paramater
> that are not String, or wrappers) would be easier to use.
>
> WDYT ?
>
> Guillaume
>
> [1] https://gist.github.com/gscheibel/7070143
> [2]
>
> https://github.com/hibernate/hibernate-ogm/blob/master/mongodb/src/main/java/org/hibernate/ogm/dialect/mongodb/query/parsing/predicate/MongoDBComparisonPredicate.java?source=c#L52
> _______________________________________________
> hibernate-dev mailing list
> hibernate-dev at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/hibernate-dev
>