Treat non-nullable scalars as scalars #342
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When using a non-nullable scalar as input type a regression was introduced by the upgrade of jackson. A jackson exception occurs internally in the MethodFieldResolver because the correct deserialiser/serialiser cannot be found. Somehow this was hidden when using earlier versions of jackson where this just worked anyhow, but due to changes in jackson this bug is uncovered. The correct way is of course to fix this in isScalarType to cover non-nullable scalars, and not rely on functionality in jackson which no longer seems to be supported.
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adisesha
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Jan 22, 2020
This is fix for graphql-java-kickstart#240, and test for same issue. When array of non-nullable scalars is input, an error is thrown from Jackson ObjectMapper. The problem then was, NonNullType was ignored by MethodFieldResolver.isScalarType. Changes in graphql-java-kickstart#342 handles NonNullType but it doesn't handle NonNullType.type is ListType.
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When using a non-nullable scalar as input type
a regression was introduced by the upgrade of jackson.
A jackson exception occurs internally in the MethodFieldResolver
because the correct deserialiser/serialiser cannot be found.
Somehow this was hidden when using earlier versions of jackson
where this just worked anyhow, but due to changes in jackson this
bug is uncovered. The correct way is of course to fix this in
isScalarType to cover non-nullable scalars, and not rely on
functionality in jackson which no longer seems to be supported.