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Cannot override Apollo Server's default field resolvers #2326

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@darkbasic

Description

@darkbasic

Is your feature request related to a problem? Please describe.

Because of the way how createSchemaForApollo works if you want to override Apollo Server's default field resolvers you can't do so in Apollo Schema options.

Describe the solution you'd like

Instead the easiest way to achieve the same result would be to pass your custom fieldResolver directly to the graphql execute function, which is called by createSchemaForApollo.

Describe alternatives you've considered

Additional context

My use case is very simple: a legacy application that mixes database entities managed directly by the ORM with GraphQL helpers that aim to reduce the load down the graph. Whenever makes sense to return these helpers the return type is an object/array with the entity and the helpers, otherwise it's just the Entity. The custom fieldResolver function looks at the type: if it's an entity it returns the default fieldResolver function, otherwise it looks for the fieldName in the info object and decides if to call the default fieldResolver function on the entity or on the helpers.

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