Class: TableSchema::Types::Base

Inherits:
Object
  • Object
show all
Includes:
Helpers
Defined in:
lib/tableschema/types/base.rb

Direct Known Subclasses

Any, Array, Boolean, Date, DateTime, GeoJSON, GeoPoint, Integer, Null, Number, Object, String, Time

Instance Method Summary collapse

Methods included from Helpers

#convert_to_boolean, #false_values, #get_class_for_type, #true_values, #type_class_lookup

Constructor Details

#initialize(field) ⇒ Base 



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# File 'lib/tableschema/types/base.rb', line 7

def initialize(field)
  @field = field
  @constraints = field['constraints'] || {}
  @required = ['true', true].include?(@constraints['required'])
  @type = @field['type']
  set_format
end

Instance Method Details

#cast(value, skip_constraints = false) ⇒ Object 



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# File 'lib/tableschema/types/base.rb', line 15

def cast(value, skip_constraints = false)
  TableSchema::Constraints.new(@field, value).validate! unless skip_constraints
  return nil if is_null?(value)
  send("cast_#{@format}", value)
rescue NoMethodError => e
  if e.message.start_with?('undefined method `cast_')
    raise(TableSchema::InvalidFormat.new("The format `#{@format}` is not supported by the type `#{@type}`"))
  else
    raise e
  end
end

#set_format ⇒ Object 



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# File 'lib/tableschema/types/base.rb', line 34

def set_format
  if (@field['format'] || '').start_with?('fmt:')
    @format, @format_string = *@field['format'].split(':', 2)
  else
    @format = @field['format'] || 'default'
  end
end

#test(value) ⇒ Object 



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# File 'lib/tableschema/types/base.rb', line 27

def test(value)
  cast(value, true)
  true
rescue TableSchema::Exception
  false
end