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Methods
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Constants
HstorePair = begin quoted_string = /"[^"\\]*(?:\\.[^"\\]*)*"/ unquoted_string = /(?:\\.|[^\s,])[^\s=,\\]*(?:\\.[^\s=,\\]*|=[^,>])*/ /(#{quoted_string}|#{unquoted_string})\s*=>\s*(#{quoted_string}|#{unquoted_string})/ end
 
ARRAY_ESCAPE = "\\" * 2 * 2
 
Instance Public methods
array_to_string(value, column, adapter)
# File activerecord/lib/active_record/connection_adapters/postgresql/cast.rb, line 70
def array_to_string(value, column, adapter)
  casted_values = value.map do |val|
    if String === val
      if val == "NULL"
        "\"#{val}\""
      else
        quote_and_escape(adapter.type_cast(val, column, true))
      end
    else
      adapter.type_cast(val, column, true)
    end
  end
  "{#{casted_values.join(',')}}"
end
cidr_to_string(object)
# File activerecord/lib/active_record/connection_adapters/postgresql/cast.rb, line 113
def cidr_to_string(object)
  if IPAddr === object
    "#{object.to_s}/#{object.instance_variable_get(:@mask_addr).to_s(2).count('1')}"
  else
    object
  end
end
hstore_to_string(object, array_member = false)
# File activerecord/lib/active_record/connection_adapters/postgresql/cast.rb, line 38
def hstore_to_string(object, array_member = false)
  if Hash === object
    string = object.map { |k, v| "#{escape_hstore(k)}=>#{escape_hstore(v)}" }.join(',')
    string = escape_hstore(string) if array_member
    string
  else
    object
  end
end
json_to_string(object)
# File activerecord/lib/active_record/connection_adapters/postgresql/cast.rb, line 62
def json_to_string(object)
  if Hash === object || Array === object
    ActiveSupport::JSON.encode(object)
  else
    object
  end
end
point_to_string(point)
# File activerecord/lib/active_record/connection_adapters/postgresql/cast.rb, line 5
def point_to_string(point)
  "(#{point[0]},#{point[1]})"
end
range_to_string(object)
# File activerecord/lib/active_record/connection_adapters/postgresql/cast.rb, line 85
def range_to_string(object)
  from = object.begin.respond_to?(:infinite?) && object.begin.infinite? ? '' : object.begin
  to   = object.end.respond_to?(:infinite?) && object.end.infinite? ? '' : object.end
  "[#{from},#{to}#{object.exclude_end? ? ')' : ']'}"
end
string_to_array(string, oid)
# File activerecord/lib/active_record/connection_adapters/postgresql/cast.rb, line 121
def string_to_array(string, oid)
  parse_pg_array(string).map {|val| type_cast_array(oid, val)}
end
string_to_bit(value)
# File activerecord/lib/active_record/connection_adapters/postgresql/cast.rb, line 29
def string_to_bit(value)
  case value
  when /^0x/i
    value[2..-1].hex.to_s(2) # Hexadecimal notation
  else
    value                    # Bit-string notation
  end
end
string_to_cidr(string)
# File activerecord/lib/active_record/connection_adapters/postgresql/cast.rb, line 99
def string_to_cidr(string)
  if string.nil?
    nil
  elsif String === string
    begin
      IPAddr.new(string)
    rescue ArgumentError
      nil
    end
  else
    string
  end
end
string_to_hstore(string)
# File activerecord/lib/active_record/connection_adapters/postgresql/cast.rb, line 48
def string_to_hstore(string)
  if string.nil?
    nil
  elsif String === string
    Hash[string.scan(HstorePair).map { |k, v|
      v = v.upcase == 'NULL' ? nil : v.gsub(/\A"(.*)"\Z/m,'\1').gsub(/\(.)/, '\1')
      k = k.gsub(/\A"(.*)"\Z/m,'\1').gsub(/\(.)/, '\1')
      [k, v]
    }]
  else
    string
  end
end
string_to_json(string)
# File activerecord/lib/active_record/connection_adapters/postgresql/cast.rb, line 91
def string_to_json(string)
  if String === string
    ActiveSupport::JSON.decode(string)
  else
    string
  end
end
string_to_point(string)
# File activerecord/lib/active_record/connection_adapters/postgresql/cast.rb, line 9
def string_to_point(string)
  if string[0] == '(' && string[-1] == ')'
    string = string[1...-1]
  end
  string.split(',').map{ |v| Float(v) }
end
string_to_time(string)
# File activerecord/lib/active_record/connection_adapters/postgresql/cast.rb, line 16
def string_to_time(string)
  return string unless String === string

  case string
  when 'infinity'; Float::INFINITY
  when '-infinity'; -Float::INFINITY
  when / BC$/
    super("-" + string.sub(/ BC$/, ""))
  else
    super
  end
end