UnionTypeDefinition class

Unions represent an object that could be one of a list of GraphQL Object types (ObjectTypeDefinition), but provides for no guaranteed fields between those types.

They also differ from interfaces in that Object types declare what interfaces they implement, but are not aware of what unions contain them.

See TypeDefinition for details on all GraphQL Type Definitions.

Inheritance

• Object
• GraphQLEntity
• TypeSystemDefinition
• TypeDefinition
• TypeDefinitionWithResolver
• UnionTypeDefinition

Mixed in types

• AbstractType

Annotations

• @immutable

Constructors

UnionTypeDefinition(UnionTypeDefinitionNode astNode, [ResolveType? getType])

const

Properties

astNode → UnionTypeDefinitionNode

The underlying definition node from gql/ast.dart

final

description → String?

no setter, inherited

directives → List<Directive>

no setter, inherited

getType → ResolveType

Resolve the given name into a TypeDefinition, usually defined within the given context such as a GraphQLSchema.

final

hashCode → int

The hash code for this object.

no setter, inherited

name → String?

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

typeNames → List<NamedType>

no setter

types → List<ObjectTypeDefinition>

http://spec.graphql.org/draft/#sel-HAHdfFDABABlG3ib:

no setter

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object o) → bool

The equality operator.

inherited