Class: DbSchema::Definitions::Index::Column

Inherits:
Object
  • Object
show all
Defined in:
lib/db_schema/definitions/index/column.rb

Direct Known Subclasses

Expression, TableField

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, order: :asc, nulls: order == :asc ? :last : :first) ⇒ Column

Returns a new instance of Column.



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# File 'lib/db_schema/definitions/index/column.rb', line 8

def initialize(name, order: :asc, nulls: order == :asc ? :last : :first)
  @name  = name
  @order = order
  @nulls = nulls
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/db_schema/definitions/index/column.rb', line 6

def name
  @name
end

#nulls ⇒ Object (readonly)

Returns the value of attribute nulls.



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# File 'lib/db_schema/definitions/index/column.rb', line 6

def nulls
  @nulls
end

#order ⇒ Object (readonly)

Returns the value of attribute order.



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# File 'lib/db_schema/definitions/index/column.rb', line 6

def order
  @order
end

Instance Method Details

#asc? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/db_schema/definitions/index/column.rb', line 14

def asc?
  @order == :asc
end

#desc? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/db_schema/definitions/index/column.rb', line 18

def desc?
  @order == :desc
end

#ordered_expression ⇒ Object 



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# File 'lib/db_schema/definitions/index/column.rb', line 22

def ordered_expression
  if asc?
    Sequel.asc(to_sequel, nulls: nulls)
  else
    Sequel.desc(to_sequel, nulls: nulls)
  end
end