Class: ROM::Schema::Definition::Relation

Inherits:
Object
  • Object
show all
Defined in:
lib/rom/schema/definition/relation.rb,
lib/rom/schema/definition/relation/base.rb

Overview

Builder object for Axiom relation

Direct Known Subclasses

Base

Defined Under Namespace

Classes: Base

Instance Method Summary collapse

Constructor Details

#initialize(&block) ⇒ Relation

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of Relation.



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# File 'lib/rom/schema/definition/relation.rb', line 14

def initialize(&block)
  @header = []
  @keys   = []
  instance_eval(&block)
end

Instance Method Details

#attribute(name, type) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/rom/schema/definition/relation.rb', line 31

def attribute(name, type)
  @header << [name, type]
end

#call(name) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/rom/schema/definition/relation.rb', line 21

def call(name)
  Axiom::Relation::Base.new(name, header)
end

#header ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/rom/schema/definition/relation.rb', line 26

def header
  Axiom::Relation::Header.coerce(@header, keys: @keys)
end

#key(*attribute_names) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/rom/schema/definition/relation.rb', line 36

def key(*attribute_names)
  @keys.concat(attribute_names)
end