def visit_index(self, param):
# If MySQL can do this, I can't find how
raise exceptions.NotSupportedError("MySQL cannot rename indexes")
def visit_migrate_check_constraint(self, *p, **k):
raise exceptions.NotSupportedError("MySQL does not support CHECK"
" constraints, use triggers instead.")
def cascade_constraint(self, constraint):
"""Cascading constraints is not supported"""
raise exceptions.NotSupportedError(
"Firebird does not support cascading constraints")
def _visit_column_nullable(self, table, column, delta):
"""Changing NULL is not supported"""
# TODO: http://www.firebirdfaq.org/faq103/
raise exceptions.NotSupportedError(
"Firebird does not support altering NULL bevahior.")
def visit_table(self, table):
"""Rename table not supported"""
raise exceptions.NotSupportedError(
"Firebird does not support renaming tables.")
def _not_supported(self, op):
raise exceptions.NotSupportedError(
"SQLite does not support "
"%s; see http://www.sqlite.org/lang_altertable.html" % op)
def get_constraint_name(self, cons):
# Oracle constraints can't guess their name like other DBs
if not cons.name:
raise exceptions.NotSupportedError(
"Oracle constraint names must be explicitly stated")
return cons.name
