Module: Shale::Type

Defined in:
lib/shale/type.rb,
lib/shale/type/date.rb,
lib/shale/type/time.rb,
lib/shale/type/float.rb,
lib/shale/type/value.rb,
lib/shale/type/string.rb,
lib/shale/type/boolean.rb,
lib/shale/type/complex.rb,
lib/shale/type/decimal.rb,
lib/shale/type/integer.rb

Defined Under Namespace

Classes: Boolean, Complex, Date, Decimal, Float, Integer, String, Time, Value

Class Method Summary collapse

Class Method Details

.lookup(type) ⇒ Shale::Type::Value

Lookup a Shale::Type::Value class by type alias

Examples:


Shale::Type.lookup(:unix_timestamp)
# => UnixTimestamp

Parameters:

  • type (Symbol) —

    Type alias

Returns:

Raises:



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# File 'lib/shale/type.rb', line 47

def lookup(type)
  klass = @registry[type]

  raise UnknownTypeError, "unknown type '#{type}'" unless klass

  klass
end

.register(type, klass) ⇒ Object

Register a symbol alias for a Shale::Type::Value class

Examples:

class UnixTimestamp < Shale::Type::Value
  def self.cast(value)
    Time.at(value.to_i)
  end
end

Shale::Type.register(:unix_timestamp, UnixTimestamp)

Parameters:

Raises:



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# File 'lib/shale/type.rb', line 23

def register(type, klass)
  @registry ||= {}

  unless klass < Value
    raise NotATypeValueError, "class '#{klass}' is not a valid Shale::Type::Value"
  end

  @registry[type] = klass
end