Class: TableStructure::Schema::Definition::Columns::Validator

Inherits:
Object
  • Object
show all
Defined in:
lib/table_structure/schema/definition/columns/validator.rb

Constant Summary collapse

DEFAULT_SIZE = 
1

Instance Method Summary collapse

Constructor Details

#initialize(name, index) ⇒ Validator

Returns a new instance of Validator.



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# File 'lib/table_structure/schema/definition/columns/validator.rb', line 10

def initialize(name, index)
  @name = name
  @index = index
end

Instance Method Details

#validate(name:, key:, size:) ⇒ Object

Raises:



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# File 'lib/table_structure/schema/definition/columns/validator.rb', line 15

def validate(name:, key:, size:, **)
  raise Error.new('"key" must not be callable.', @name, @index) if key.respond_to?(:call)
  if !key && name.respond_to?(:call) && !size
    raise Error.new('"size" must be defined, because column size cannot be determined.', @name, @index)
  end
  raise Error.new('"size" must be positive.', @name, @index) if size && size < DEFAULT_SIZE
  if key && size && [key].flatten.size < size
    raise Error.new('"key" size must not be less than specified "size".', @name, @index)
  end

  true
end