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initialize_type_map

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v4.0.2 - Show latest stable - 0 notes - Class: ActiveRecord::ConnectionAdapters::PostgreSQLAdapter
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initialize_type_map() private

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# File activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb, line 740
        def initialize_type_map
          result = execute('SELECT oid, typname, typelem, typdelim, typinput FROM pg_type', 'SCHEMA')
          leaves, nodes = result.partition { |row| row['typelem'] == '0' }

          # populate the leaf nodes
          leaves.find_all { |row| OID.registered_type? row['typname'] }.each do |row|
            OID::TYPE_MAP[row['oid'].to_i] = OID::NAMES[row['typname']]
          end

          arrays, nodes = nodes.partition { |row| row['typinput'] == 'array_in' }

          # populate composite types
          nodes.find_all { |row| OID::TYPE_MAP.key? row['typelem'].to_i }.each do |row|
            if OID.registered_type? row['typname']
              # this composite type is explicitly registered
              vector = OID::NAMES[row['typname']]
            else
              # use the default for composite types
              vector = OID::Vector.new row['typdelim'], OID::TYPE_MAP[row['typelem'].to_i]
            end

            OID::TYPE_MAP[row['oid'].to_i] = vector
          end

          # populate array types
          arrays.find_all { |row| OID::TYPE_MAP.key? row['typelem'].to_i }.each do |row|
            array = OID::Array.new  OID::TYPE_MAP[row['typelem'].to_i]
            OID::TYPE_MAP[row['oid'].to_i] = array
          end
        end
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