Using 2.1.2.ga -
I found a case where enabling the query cache on a query where a
result transformer is used causes an error:
System.Reflection.TargetException : Object does not match target
type.
way down in .BasicPropertyAccessor.BasicGetter.Get
You can demonstrate this easily by modifying the test
CachedQueriesHandlesEntitiesParametersCorrectly and adding
.SetResultTransformer(new DistinctRootEntityResultTransformer())
to the query.
The problem is that we're calling
ForeignKeys.GetEntityIdentifierIfNotUnsaved and passing it the row
values while still in tuple form - an object[] where object[0] is the
entity.
My solution was to add the following to
ForeignKeys.GetEntityIdentifierIfNotUnsaved:
// When query cache + result transform is used, the
"entity" given here is still in
// tuple form. In the cases I've seen, at least, the
entity is the first item of a
// one item object array. If that is the case, extract
it here.
var entityAsTuple = entity as object[];
if (entityAsTuple != null && entityAsTuple.Length ==
1)
entity = entityAsTuple[0];
and with this, the modified
CachedQueriesHandlesEntitiesParametersCorrectly passes, along with all
other tests in the test project.
My question is - is this correct/sufficient?
Is there a better fix, maybe that has already been made somewhere?
Thanks
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