Class: StructuredDataToSql::Json::Shredder

Inherits:
Object
  • Object
show all
Defined in:
lib/structured_data_to_sql/json/shredder.rb

Overview

Turns one JSON record into a tree of ShreddedRows following the convention-based rules: nested objects flatten into prefixed columns, arrays become child tables, GraphQL edges/node wrappers unwrap, and anything too deep or irregular falls back to a *_json text column.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(registry:, max_depth: 5, graphql_unwrap: true, json_column_paths: nil, forced_json_paths: nil) ⇒ Shredder

Returns a new instance of Shredder.



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# File 'lib/structured_data_to_sql/json/shredder.rb', line 98

def initialize(
  registry:,
  max_depth: 5,
  graphql_unwrap: true,
  json_column_paths: nil,
  forced_json_paths: nil
)
  @registry = registry
  @max_depth = max_depth
  @graphql_unwrap = graphql_unwrap
  @json_column_paths = (json_column_paths || []).to_set
  @forced_json_paths = forced_json_paths || Set.new
  @json_fallbacks = 0
end

Instance Attribute Details

#json_fallbacks ⇒ Object (readonly)

Returns the value of attribute json_fallbacks.



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# File 'lib/structured_data_to_sql/json/shredder.rb', line 113

def json_fallbacks
  @json_fallbacks
end

Instance Method Details

#shred(record, ordinal) ⇒ Object 



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# File 'lib/structured_data_to_sql/json/shredder.rb', line 115

def shred(record, ordinal)
  build_row("", record, ordinal, nil)
end