Class: GraphQL::Stitching::SelectionHint

Inherits:
Object
  • Object
show all
Defined in:
lib/graphql/stitching/selection_hint.rb

Overview

Builds hidden selection fields added by stitiching code, used to request operational data about resolved objects.

Constant Summary collapse

HINT_PREFIX = 
"_STITCH_"

Class Method Summary collapse

Class Method Details

.key(name) ⇒ Object 



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# File 'lib/graphql/stitching/selection_hint.rb', line 17

def key(name)
  "#{HINT_PREFIX}#{name}"
end

.key?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/graphql/stitching/selection_hint.rb', line 11

def key?(name)
  return false unless name

  name.start_with?(HINT_PREFIX)
end

.key_node(field_name) ⇒ Object 



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# File 'lib/graphql/stitching/selection_hint.rb', line 21

def key_node(field_name)
  GraphQL::Language::Nodes::Field.new(alias: key(field_name), name: field_name)
end

.typename_node ⇒ Object 



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# File 'lib/graphql/stitching/selection_hint.rb', line 25

def typename_node
  @typename_node ||= key_node("__typename")
end