a question around data builders We started using them and am

Question

a question around data builders We started using them and am running into errors like ```Don t know how to instantiate leaf URL``` We have a set of scalar adapters which are correctly fed into the databuilders in the `fakeResolver` the order of operations is such ```val leafValue = resolver resolveLeaf FakeResolverContext path id mergedField if type is CustomScalarType ``` the `resolver` itself seems to run without any knowledge of scalars in the `DefaultFakeResolver` ```else gt val type = enumTypes find it name == name error Don t know how to instantiate leaf $name ``` is this expected I could not find anything in the docs for data builders

agrosner · Answer

im resorting to creating our own which we will have to feed into all data builder instances but this seems like a bug

agrosner · Answer

```java lang String cannot be cast to ApiURL URL gt faker internet url ``` seems that the resolveLeaf method also requires we return the correct scalar types from the method otherwise we get an exception

mbonnin · Answer

gt im resorting to creating our own which we will have to feed into all data builder instances That s the way to go albeit you have to do it at every callsite for now < Eduard Boloș> opened to make it configurable globally gt this seems like a bug There s no way the DefaultFakeResolver knows how to create a random custom scalar For an example `Date` or `GeoPoint` or whatnot this has to be supplied to the lib somehow

mbonnin · Answer

gt he resolveLeaf method also requires we return the correct scalar types from the method otherwise we get an exception Indeed you can use ` context mergedField type rawType ` to get the type to instantiate

agrosner · Answer

Its interesting because it has access to the custom scalars class in the data builder which has all the scalar adapters But yeah the adapters don t know how to construct them

agrosner · Answer

Also they re registered at build time not runtime

agrosner · Answer

I was going to fetch the adapter and try to pass a buffer value to the adapter method which requires me to supply way to send different values based on type of field but i figured it was too complicated so I just hardcoded their construction

mbonnin · Answer

Yea not an easy problem Having a global resolver that can be configured with this could help