Class: Dbsketch::Model::PrimaryKey

Inherits:
Database_Object show all
Defined in:
lib/dbsketch/model/primary_key.rb

Instance Attribute Summary collapse

Attributes inherited from Database_Object

#comment, #dependencies, #meaning, #name, #order

Instance Method Summary collapse

Methods inherited from Database_Object

#add_dependencies, #class_name, #compute_order!, #inspect, #reset_order!

Constructor Details

#initialize(name, columns, meaning: nil, comment: nil) ⇒ PrimaryKey

Returns a new instance of PrimaryKey.



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# File 'lib/dbsketch/model/primary_key.rb', line 12

def initialize name, columns, meaning: nil, comment: nil
	super name, :meaning => meaning, :comment => comment
	@columns = columns.is_a?(Array) ? columns : [columns]
	### Preconditions
	@columns.each_with_index do |column, index|
		raise ArgumentError, "columns[#{index}] is not a Dbsketch::Model::Column" unless column.is_a? Column
	end
	###
end

Instance Attribute Details

#columns ⇒ Object (readonly)

Returns the value of attribute columns.



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# File 'lib/dbsketch/model/primary_key.rb', line 22

def columns
  @columns
end

Instance Method Details

#has_column?(column_name) ⇒ Boolean

Returns:

  • (Boolean)

Raises:

  • (ArgumentError) 


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# File 'lib/dbsketch/model/primary_key.rb', line 24

def has_column? column_name
	### Preconditions
	raise ArgumentError, "column_name is not a String" unless column_name.is_a? String
	###
	nil != @columns.find { |c| c.name.downcase == column_name.downcase }
end