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Contents
module GraphQL class Schema # Find the members of a union or interface within a given schema. # # (Although its members never change, unions are handled this way to simplify execution code.) # # Internally, the calculation is cached. It's assumed that schema members _don't_ change after creating the schema! # # @example Get an interface's possible types # possible_types = GraphQL::Schema::PossibleTypes(MySchema) # possible_types.possible_types(MyInterface) # # => [MyObjectType, MyOtherObjectType] class PossibleTypes def initialize(schema) @object_types = schema.types.values.select { |type| type.kind.object? } @storage = Hash.new do |hash, key| hash[key] = @object_types.select { |type| type.interfaces.include?(key) }.sort_by(&:name) end end def possible_types(type_defn) case type_defn when GraphQL::UnionType type_defn.possible_types when GraphQL::InterfaceType @storage[type_defn] else raise "#{type_defn} doesn't have possible types" end end end end end
Version data entries
35 entries across 35 versions & 1 rubygems