class XMigra::DeclarativeSupport::Table::DefaultConstraint
Constants
- IDENTIFIER
- IMPLICIT_PREFIX
Attributes
column[RW]
expression[RW]
Public Class Methods
new(name, constr_spec)
click to toggle source
Calls superclass method
XMigra::DeclarativeSupport::Table::Constraint::new
# File lib/xmigra/declarative_support/table.rb, line 296 def initialize(name, constr_spec) super(name, constr_spec) implicit_column = ( name[IMPLICIT_PREFIX.length..-1] if name.start_with?(IMPLICIT_PREFIX) ) @column = constr_spec['column'] || implicit_column || Constraint.bad_spec( %Q{Default constraint #{name} does not specify a "column"} ) @expression = constr_spec['value'] || Constraint.bad_spec( %Q{Default constraint #{name} does not specify an expression to use as a "value"} ) end
Public Instance Methods
creation_sql()
click to toggle source
# File lib/xmigra/declarative_support/table.rb, line 315 def creation_sql creation_name_sql + "DEFAULT #{expression} FOR #{column}" end
only_on_column_at_creation?()
click to toggle source
# File lib/xmigra/declarative_support/table.rb, line 311 def only_on_column_at_creation? true end