Class: GraphQL::Analysis::QueryDepth
- Inherits:
-
Object
- Object
- GraphQL::Analysis::QueryDepth
- Defined in:
- lib/graphql/analysis/query_depth.rb
Overview
A query reducer for measuring the depth of a given query.
Direct Known Subclasses
Instance Method Summary collapse
-
#call(memo, visit_type, irep_node) ⇒ Object
-
#final_value(memo) ⇒ Object
-
#initial_value(query) ⇒ Object
-
#initialize(&block) ⇒ QueryDepth
constructor
A new instance of QueryDepth.
Constructor Details
#initialize(&block) ⇒ QueryDepth
Returns a new instance of QueryDepth.
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# File 'lib/graphql/analysis/query_depth.rb', line 12 def initialize(&block) @depth_handler = block end |
Instance Method Details
#call(memo, visit_type, irep_node) ⇒ Object
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# File 'lib/graphql/analysis/query_depth.rb', line 24 def call(memo, visit_type, irep_node) if irep_node.ast_node.is_a?(GraphQL::Language::Nodes::Field) if visit_type == :enter memo[:current_depth] += 1 else if memo[:max_depth] < memo[:current_depth] memo[:max_depth] = memo[:current_depth] end memo[:current_depth] -= 1 end end memo end |
#final_value(memo) ⇒ Object
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# File 'lib/graphql/analysis/query_depth.rb', line 38 def final_value(memo) @depth_handler.call(memo[:query], memo[:max_depth]) end |
#initial_value(query) ⇒ Object
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# File 'lib/graphql/analysis/query_depth.rb', line 16 def initial_value(query) { max_depth: 0, current_depth: 0, query: query, } end |