Class: ElasticGraph::Apollo::GraphQL::EntitiesFieldResolver::RepresentationWithId::Adapter

Inherits:
Data
  • Object
show all
Defined in:
lib/elastic_graph/apollo/graphql/entities_field_resolver.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#schema_element_names ⇒ Object (readonly)

Returns the value of attribute schema_element_names

Returns:

  • (Object) —

    the current value of schema_element_names



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# File 'lib/elastic_graph/apollo/graphql/entities_field_resolver.rb', line 159

def schema_element_names
  @schema_element_names
end

#type ⇒ Object (readonly)

Returns the value of attribute type

Returns:

  • (Object) —

    the current value of type



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# File 'lib/elastic_graph/apollo/graphql/entities_field_resolver.rb', line 159

def type
  @type
end

Instance Method Details

#customize_query(query, representations) ⇒ ElasticGraph::GraphQL::DatastoreQuery

Customizes the given query to filter to entities matching the provided representations. Builds a filter matching all IDs from the representations and configures pagination and requested fields.

Parameters:

  • query (ElasticGraph::GraphQL::DatastoreQuery) —

    the query to customize

  • representations (Array<RepresentationWithId>) —

    the representations to query for

Returns:

  • (ElasticGraph::GraphQL::DatastoreQuery) —

    the customized query



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# File 'lib/elastic_graph/apollo/graphql/entities_field_resolver.rb', line 169

def customize_query(query, representations)
  # Given a set of representations, builds a filter that will match all of them (and only them).
  all_ids = representations.map(&:id).reject { |id| id.is_a?(::Array) or id.is_a?(::Hash) }
  filter = {"id" => {schema_element_names.equal_to_any_of => all_ids}}

  query.merge_with(
    document_pagination: {first: representations.length},
    requested_fields: additional_requested_fields_for(representations),
    internal_filters: [filter]
  )
end

#identify_matching_hit(indexed_search_hits, representation, context:, index:) ⇒ Object

Given some indexed search hits and a representation, identifies the search hit that matches the representation.



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# File 'lib/elastic_graph/apollo/graphql/entities_field_resolver.rb', line 188

def identify_matching_hit(indexed_search_hits, representation, context:, index:)
  hit = indexed_search_hits[representation.id]
  hit if hit && match?(representation.other_fields, hit.payload)
end

#index_search_hits(response) ⇒ Object

Given a query response, indexes the search hits for easy ‘O(1)` retrieval by `identify_matching_hit`. This allows us to provide `O(N)` complexity in our resolver instead of `O(N^2)`.



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# File 'lib/elastic_graph/apollo/graphql/entities_field_resolver.rb', line 183

def index_search_hits(response)
  response.to_h { |hit| [hit.id, hit] }
end

#root_document_type? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/elastic_graph/apollo/graphql/entities_field_resolver.rb', line 193

def root_document_type?
  true
end