diff options
Diffstat (limited to 'lib/sqlalchemy/sql.py')
| -rw-r--r-- | lib/sqlalchemy/sql.py | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/lib/sqlalchemy/sql.py b/lib/sqlalchemy/sql.py index 10abbd46a..c3921589b 100644 --- a/lib/sqlalchemy/sql.py +++ b/lib/sqlalchemy/sql.py @@ -23,7 +23,7 @@ import sqlalchemy.schema as schema import sqlalchemy.util as util import string -__ALL__ = ['textclause', 'select', 'join', 'and_', 'or_', 'union', 'desc', 'asc', 'outerjoin', 'alias', 'subquery', 'bindparam'] +__ALL__ = ['textclause', 'select', 'join', 'and_', 'or_', 'union', 'desc', 'asc', 'outerjoin', 'alias', 'subquery', 'bindparam', 'sequence'] def desc(column): return CompoundClause(None, column, "DESC") @@ -71,6 +71,9 @@ def bindparam(key, value = None): def textclause(text, params = None): return TextClause(text, params) +def sequence(): + return Sequence() + def _compound_clause(keyword, *clauses): return CompoundClause(keyword, *clauses) @@ -124,6 +127,9 @@ class ClauseElement(object): def execute(self, **params): e = self._engine() c = self.compile(e, bindparams = params) + # TODO: do pre-execute right here, for sequences, if the compiled object + # defines it + # TODO: why do we send the params twice, once to compile, once to c.get_params return e.execute(str(c), c.get_params(**params)) def result(self, **params): @@ -637,3 +643,10 @@ class Delete(UpdateBase): visitor.visit_delete(self) +class Sequence(BindParamClause): + def __init__(self): + BindParamClause.__init__(self, 'sequence') + + def accept_visitor(self, visitor): + visitor.visit_sequence(self) + |