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package resolvable
import (
"reflect"
"github.com/graph-gophers/graphql-go/introspection"
"github.com/graph-gophers/graphql-go/types"
)
// Meta defines the details of the metadata schema for introspection.
type Meta struct {
FieldSchema Field
FieldType Field
FieldTypename Field
Schema *Object
Type *Object
}
func newMeta(s *types.Schema) *Meta {
var err error
b := newBuilder(s)
metaSchema := s.Types["__Schema"].(*types.ObjectTypeDefinition)
so, err := b.makeObjectExec(metaSchema.Name, metaSchema.Fields, nil, false, reflect.TypeOf(&introspection.Schema{}))
if err != nil {
panic(err)
}
metaType := s.Types["__Type"].(*types.ObjectTypeDefinition)
t, err := b.makeObjectExec(metaType.Name, metaType.Fields, nil, false, reflect.TypeOf(&introspection.Type{}))
if err != nil {
panic(err)
}
if err := b.finish(); err != nil {
panic(err)
}
fieldTypename := Field{
FieldDefinition: types.FieldDefinition{
Name: "__typename",
Type: &types.NonNull{OfType: s.Types["String"]},
},
TraceLabel: "GraphQL field: __typename",
}
fieldSchema := Field{
FieldDefinition: types.FieldDefinition{
Name: "__schema",
Type: s.Types["__Schema"],
},
TraceLabel: "GraphQL field: __schema",
}
fieldType := Field{
FieldDefinition: types.FieldDefinition{
Name: "__type",
Type: s.Types["__Type"],
},
TraceLabel: "GraphQL field: __type",
}
return &Meta{
FieldSchema: fieldSchema,
FieldTypename: fieldTypename,
FieldType: fieldType,
Schema: so,
Type: t,
}
}
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