SqlUtil::AbstractIndex Class Reference

the abstract base class for index information More...

Inherits Serializable.

Public Member Methods
	constructor (string n, bool u, hash c)
	creates the object from the name, a unique flag, and a hash of column information
bool	equal (AbstractIndex ix)
	returns True if the argument is equal to the current index, False if not
bool	equalExceptName (AbstractIndex ix)
	returns True if the argument is equal to the current index with the exception of the name, False if not
abstract bool	equalImpl (AbstractIndex ix)
	returns True if the argument is equal to the current index, False if not
abstract string	getCreateSql (string table_name, *hash< auto > opt)
	returns a string that can be used to create the index in the database
string	getDropSql (string table_name)
	returns a string that can be used to drop the index from the database
string	getName ()
	returns the index name
list< auto >	getRecreateSql (AbstractDatasource ds, string table_name, *hash< auto > opt)
	returns a list of strings to drop and recreate the current index; if there are dependent constraints, the list contains commands to disable the constraints before dropping the index and also contains commands to re-enable the contraints after re-creating the index
abstract string	getRenameSql (string table_name, string new_name)
	returns a string that can be used to rename the index in the database
*AbstractColumnSupportingConstraint	getSupportingConstraint ()
	returns the supporting constraint, if any
bool	hasColumn (string cname)
	returns True if the constraint references the named column
	setSupportingConstraint ()
	clears the supporting constraint
	setSupportingConstraint (AbstractColumnSupportingConstraint c)
	tags the index with a column supporting constraint (unique or fk constraint, etc) that the index supports

Public Attributes
Columns	columns
	an object of class Columns representing the columns in the index
string	name
	the name of the index
bool	unique
	True if the index is a unique index, False if not

Private Attributes
*AbstractColumnSupportingConstraint	constraint
	the AbstractColumnSupportingConstraint that this index supports, if any

Detailed Description

the abstract base class for index information