Module: Sequel::Postgres::PGRange::DatabaseMethods

Defined in:
lib/sequel/extensions/pg_range.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.extended(db) ⇒ Object

Reset the conversion procs if using the native postgres adapter, and extend the datasets to correctly literalize ruby Range values.



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# File 'lib/sequel/extensions/pg_range.rb', line 240

def self.extended(db)
  db.instance_eval do
    @pg_range_schema_types ||= {}
    extend_datasets(DatasetMethods)
    copy_conversion_procs([3904, 3906, 3912, 3926, 3905, 3907, 3913, 3927])
    [:int4range, :numrange, :tsrange, :tstzrange, :daterange, :int8range].each do |v|
      @schema_type_classes[v] = PGRange
    end
  end

  procs = db.conversion_procs
  procs[3908] = Parser.new("tsrange", procs[1114])
  procs[3910] = Parser.new("tstzrange", procs[1184])
  if defined?(PGArray::Creator)
    procs[3909] = PGArray::Creator.new("tsrange", procs[3908])
    procs[3911] = PGArray::Creator.new("tstzrange", procs[3910])
  end

end

Instance Method Details

#bound_variable_arg(arg, conn) ⇒ Object

Handle Range and PGRange values in bound variables



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# File 'lib/sequel/extensions/pg_range.rb', line 261

def bound_variable_arg(arg, conn)
  case arg
  when PGRange 
    arg.unquoted_literal(schema_utility_dataset)
  when Range
    PGRange.from_range(arg).unquoted_literal(schema_utility_dataset)
  else
    super
  end
end

#freeze ⇒ Object

Freeze the pg range schema types to prevent adding new ones.



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# File 'lib/sequel/extensions/pg_range.rb', line 273

def freeze
  @pg_range_schema_types.freeze
  super
end

#register_range_type(db_type, opts = OPTS, &block) ⇒ Object

Register a database specific range type. This can be used to support different range types per Database. Use of this method does not affect global state, unlike PGRange.register. See PGRange.register for possible options.



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# File 'lib/sequel/extensions/pg_range.rb', line 282

def register_range_type(db_type, opts=OPTS, &block)
  opts = {:type_procs=>conversion_procs, :typecast_method_map=>@pg_range_schema_types, :typecast_methods_module=>(class << self; self; end)}.merge!(opts)
  unless (opts.has_key?(:subtype_oid) || block) && opts.has_key?(:oid)
    range_oid, subtype_oid = from(:pg_range).join(:pg_type, :oid=>:rngtypid).where(:typname=>db_type.to_s).get([:rngtypid, :rngsubtype])
    opts[:subtype_oid] = subtype_oid unless opts.has_key?(:subtype_oid) || block
    opts[:oid] = range_oid unless opts.has_key?(:oid)
  end

  PGRange.register(db_type, opts, &block)
  @schema_type_classes[:"#{opts[:type_symbol] || db_type}"] = PGRange
  conversion_procs_updated
end