class PG::BasicTypeRegistry::CoderMap
An instance of this class stores the coders that should be used for a particular wire format (text or binary) and type cast direction (encoder or decoder).
Each coder object is filled with the PostgreSQL type name, OID, wire format and array coders are filled with the base elements_type.
Constants
- DONT_QUOTE_TYPES
-
Hash of text types that don’t require quotation, when used within composite types.
type.name => true
Attributes
Public Class Methods
Source
# File lib/pg/basic_type_registry.rb, line 43 def initialize(result, coders_by_name, format, arraycoder) coder_map = {} arrays, nodes = result.partition { |row| row['typinput'] == 'array_in' } # populate the base types nodes.find_all { |row| coders_by_name.key?(row['typname']) }.each do |row| coder = coders_by_name[row['typname']].dup coder.oid = row['oid'].to_i coder.name = row['typname'] coder.format = format coder_map[coder.oid] = coder end if arraycoder # populate array types arrays.each do |row| elements_coder = coder_map[row['typelem'].to_i] next unless elements_coder coder = arraycoder.new coder.oid = row['oid'].to_i coder.name = row['typname'] coder.format = format coder.elements_type = elements_coder coder.needs_quotation = !DONT_QUOTE_TYPES[elements_coder.name] coder_map[coder.oid] = coder end end @coders = coder_map.values @coders_by_name = @coders.inject({}){|h, t| h[t.name] = t; h } @coders_by_oid = @coders.inject({}){|h, t| h[t.oid] = t; h } end
Public Instance Methods
Source
# File lib/pg/basic_type_registry.rb, line 82 def coder_by_name(name) @coders_by_name[name] end
Source
# File lib/pg/basic_type_registry.rb, line 86 def coder_by_oid(oid) @coders_by_oid[oid] end