Class: ElasticGraph::GraphQL::Resolvers::RelayConnection::ArrayAdapter

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/elastic_graph/graphql/resolvers/relay_connection/array_adapter.rb

Overview

Relay connection adapter for an array. Implemented primarily by ‘GraphQL::Relay::ArrayConnection`; here we just adapt it to the ElasticGraph internal resolver interface.

Defined Under Namespace

Classes: Edge

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.build(nodes, args, context) ⇒ Object 



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# File 'lib/elastic_graph/graphql/resolvers/relay_connection/array_adapter.rb', line 28

def self.build(nodes, args, context)
  schema = context.fetch(:elastic_graph_schema)
  schema_element_names = schema.element_names
  nodes ||= [] # : ::Array[untyped]

  # ElasticGraph supports any schema elements (like a `first` argument) being renamed,
  # but `GraphQL::Relay::ArrayConnection` would not understand a renamed argument.
  # Here we map the args back to the canonical relay args so `ArrayConnection` can
  # understand them.
  #
  # `after` and `before` are encoded to convert them to the string form required by `ArrayConnection`.
  relay_args = {
    first: args[schema_element_names.first],
    after: args[schema_element_names.after]&.encode,
    last: args[schema_element_names.last],
    before: args[schema_element_names.before]&.encode
  }.compact

  graphql_impl = ::GraphQL::Pagination::ArrayConnection.new(nodes, context: context, **relay_args)
  new(schema, graphql_impl, nodes.size)
end

Instance Method Details

#edges ⇒ Object 



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# File 'lib/elastic_graph/graphql/resolvers/relay_connection/array_adapter.rb', line 54

def edges
  @edges ||= graphql_impl.nodes.map do |node|
    Edge.new(schema, graphql_impl, node)
  end
end

#nodes ⇒ Object 



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# File 'lib/elastic_graph/graphql/resolvers/relay_connection/array_adapter.rb', line 60

def nodes
  @nodes ||= graphql_impl.nodes
end

#page_info ⇒ Object 



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# File 'lib/elastic_graph/graphql/resolvers/relay_connection/array_adapter.rb', line 50

def page_info
  self
end