// Extracts the root type of the operation from the schema.
func getOperationRootType(schema types.GraphQLSchema, operation ast.Definition, r chan *types.GraphQLResult) (objType *types.GraphQLObjectType) {
if operation == nil {
var result types.GraphQLResult
err := graphqlerrors.NewGraphQLFormattedError("Can only execute queries and mutations")
result.Errors = append(result.Errors, err)
r <- &result
return objType
}
switch operation.GetOperation() {
case "query":
return schema.GetQueryType()
case "mutation":
mutationType := schema.GetMutationType()
if mutationType.Name == "" {
var result types.GraphQLResult
err := graphqlerrors.NewGraphQLFormattedError("Schema is not configured for mutations")
result.Errors = append(result.Errors, err)
r <- &result
return objType
}
return mutationType
default:
var result types.GraphQLResult
err := graphqlerrors.NewGraphQLFormattedError("Can only execute queries and mutations")
result.Errors = append(result.Errors, err)
r <- &result
return objType
}
}
