Class: Dbsketch::Model::ComputedColumn

Inherits:
AbstractColumn show all
Defined in:
lib/dbsketch/model/computed_column.rb

Instance Attribute Summary collapse

Attributes inherited from AbstractColumn

#nullable, #order

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, query, meaning: nil, comment: nil, nullable: true, order: nil, persisted: false) ⇒ ComputedColumn

Returns a new instance of ComputedColumn.

Raises:

  • (ArgumentError) 


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

def initialize name, query, meaning: nil, comment: nil, nullable: true, order: nil, persisted: false
	super(name, :meaning => meaning, :comment => comment, :nullable => nullable, :order => order)
	### Preconditions
	raise ArgumentError, "query is not a String" unless query.is_a? String
	raise ArgumentError, "persisted is not a boolean" unless persisted.is_a? TrueClass or persisted.is_a? FalseClass
	raise ModelError, "column is not persisted althought not nullable" if not nullable and not persisted
	###
	@query = query
	@persisted = persisted
end

Instance Attribute Details

#persisted ⇒ Object (readonly)

Returns the value of attribute persisted.



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# File 'lib/dbsketch/model/computed_column.rb', line 23

def persisted
  @persisted
end

#query ⇒ Object (readonly)

Returns the value of attribute query.



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# File 'lib/dbsketch/model/computed_column.rb', line 23

def query
  @query
end