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

[Guillaume SCHEIBEL]

Hi,

OGM-356 <https://hibernate.atlassian.net/browse/OGM-356> created.

What is missing to make it work ?

Guillaume


2013/10/20 Gunnar Morling <gunnar at hibernate.org>

> 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
>>
>
>