Create Schema Definition from Introspection Result is ignoring Custom Scalar from Server

Hi guys,

I am trying to use graphql-java to send graphql queries to prisma graphql server. However, it fails to create GraphQLSchema with the introspection results from prisma grpahql server due to the ‘DateTime’

Introspection

query IntrospectionQuery {
  __schema {
    queryType {
      name
    }
    mutationType {
      name
    }
    subscriptionType {
      name
    }
    types {
      ...FullType
    }
    directives {
      name
      description
      locations
      args {
        ...InputValue
      }
    }
  }
}

fragment FullType on __Type {
  kind
  name
  description
  fields(includeDeprecated: true) {
    name
    description
    args {
      ...InputValue
    }
    type {
      ...TypeRef
    }
    isDeprecated
    deprecationReason
  }
  inputFields {
    ...InputValue
  }
  interfaces {
    ...TypeRef
  }
  enumValues(includeDeprecated: true) {
    name
    description
    isDeprecated
    deprecationReason
  }
  possibleTypes {
    ...TypeRef
  }
}

fragment InputValue on __InputValue {
  name
  description
  type {
    ...TypeRef
  }
  defaultValue
}

fragment TypeRef on __Type {
  kind
  name
  ofType {
    kind
    name
    ofType {
      kind
      name
      ofType {
        kind
        name
        ofType {
          kind
          name
          ofType {
            kind
            name
            ofType {
              kind
              name
              ofType {
                kind
                name
              }
            }
          }
        }
      }
    }
  }
}

Introspection Result

{
  "data": {
    "__schema": {
      "queryType": {
        "name": "Query"
      },
      "mutationType": {
        "name": "Mutation"
      },
      "subscriptionType": {
        "name": "Subscription"
      },
      "types": [
        {
          "kind": "SCALAR",
          "name": "DateTime",
          "description": "",
          "fields": null,
          "inputFields": null,
          "interfaces": null,
          "enumValues": null,
          "possibleTypes": null
        },
        ...
      ],
      "directives": [
        ...
      ]
    }
  }
}

Create Schema Definition from Introspection Result

Document schema = new IntrospectionResultToSchema().createSchemaDefinition((Map<String, Object>) introspectionResult.get("data"));
String printedSchema = new SchemaPrinter().print(schema);
Reader schemaProvider = new StringReader(printedSchema);
SchemaParser parser = new SchemaParser();
SchemaGenerator schemaGenerator = new SchemaGenerator();
TypeDefinitionRegistry typeRegistry = parser.parse(schemaProvider);
GraphQLSchema schema = schemaGenerator.makeExecutableSchema(typeRegistry, RuntimeWiring.newRuntimeWiring().build());

Error

The input value type ‘DateTime’ is not present when resolving type ‘UserWhereInput’ [@1107:1], There is no type resolver defined for interface / union ‘Node’ type

Does anyone have any idea or tries to implement this?

[IceBlizz6]

Nevermind, figured out the solution. SchemaPrinter(SchemaPrinter.Options.defaultOptions().includeScalarTypes(true)) Looks like SchemaPrinter does not print custom scalars by default.

[IceBlizz6]

Suspect that i’m having the same problem. GraphQL introspection query gives information about scalar types. But SchemaPrinter().print(GraphQLSchema) output does not give any scalars. Even though it references Long and LocalDateTime types, they have no “scalar Long” definition.