Hello, again.
I have some more insight.
The exception is thrown here:
*if (value instanceof Collection && List.class.isAssignableFrom(mType)) {
Class componentType = (Class) ((ParameterizedType)
member.getGenericType()).getActualTypeArguments()[0]; member.set(result,
Convert.convert((Collection) value, componentType));}*
in *DefaultRecordMapper.java*.
member is of an interface type which also implements a List type.
* member.getGenericType()* returns the non-generic interface type which has
no actual type arguments, and this causes the exception. I have no idea why
this didn't happen before the refactoring. As the same interface with the
same declaration was in use for some time.
I still don't know how to fix the issue, though.
Maurizio.
On Friday, 30 October 2020 at 10:19:48 UTC+1 Maurizio wrote:
> Hello.
>
> After a refactoring session, which included moving some classes like
> BeatsId in another module, this code
>
>
>
> *fun DSLContext.load(beatsId: BeatsId): BeatsPojo
> =selectFrom(BEATS).where(BEATS.BEATS_ID.eq(beatsId))
> .fetchOneInto(BeatsPojo::class.java)*
>
> causes
>
>
> *org.jooq.exception.MappingException: An error ocurred when mapping record
> to class x.y.z..jooq.tables.pojos.Beats*
>
> *java.lang.ClassCastException: class java.lang.Class cannot be cast to
> class java.lang.reflect.ParameterizedType (java.lang.Class and
> java.lang.reflect.ParameterizedType are in module java.base of loader
> 'bootstrap')*
>
> Where BeatsPojo is an alias for the pojo generated by jooq (
> *x.y.z..jooq.tables.pojos.Beats)*.
>
> However, this code runs successfully:
>
>
>
>
>
>
>
>
>
> *selectFrom(BEATS).where(BEATS.BEATS_ID.eq(beatsId)) .fetchOne().map {
> BeatsPojo( it[BEATS.BEATS_ID], it[BEATS.PARENT_BEATS_ID],
> it[BEATS.TRACK_ID], it[BEATS.FRAME_INDICES], it[BEATS.CREATOR_USER_ID],
> it[BEATS.CREATION_TIMESTAMP] )*
> I assume this is some kind of reflection problem. What can be the missing
> type? The dependencies *look *OK, to me, but I have no other ideas beyond
> that.
>
> Other pojos work just fine.
>
> Only two pojos cause this kind of problem and both have a field of array
> type. In both cases the type of the element of the array is converted using
> a org.jooq.Converter. This is not changed during the refactoring.
>
> Could you help me understand what is happening?
>
> Thanks,
>
> Maurizio.
>
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