diff options
Diffstat (limited to 'lib/sqlalchemy/sql')
| -rw-r--r-- | lib/sqlalchemy/sql/visitors.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/sqlalchemy/sql/visitors.py b/lib/sqlalchemy/sql/visitors.py index bf15c2b7e..9bc5d2479 100644 --- a/lib/sqlalchemy/sql/visitors.py +++ b/lib/sqlalchemy/sql/visitors.py @@ -29,6 +29,14 @@ class ClauseVisitor(object): if meth: return meth(obj, **kwargs) + def traverse_chained(self, obj, **kwargs): + v = self + while v is not None: + meth = getattr(self, "visit_%s" % obj.__visit_name__, None) + if meth: + meth(obj, **kwargs) + v = getattr(v, '_next', None) + def iterate(self, obj, stop_on=None): stack = [obj] traversal = [] |