Class: RDBr::Metadata::UniqueConstraint

Inherits:
Data
  • Object
show all
Defined in:
lib/rdbr/metadata/constraints.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(columns:, name: nil) ⇒ UniqueConstraint

Returns a new instance of UniqueConstraint.



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# File 'lib/rdbr/metadata/constraints.rb', line 4

def initialize(columns:, name: nil)
  super(
    name: Values.optional_name(name, field: 'unique constraint name'),
    columns: Values.names(columns, field: 'unique constraint columns')
  )
end

Instance Attribute Details

#columns ⇒ Object (readonly)

Returns the value of attribute columns

Returns:

  • (Object) —

    the current value of columns



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# File 'lib/rdbr/metadata/constraints.rb', line 3

def columns
  @columns
end

#name ⇒ Object (readonly)

Returns the value of attribute name

Returns:

  • (Object) —

    the current value of name



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# File 'lib/rdbr/metadata/constraints.rb', line 3

def name
  @name
end

Instance Method Details

#composite? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rdbr/metadata/constraints.rb', line 11

def composite?
  columns.length > 1
end