diff options
Diffstat (limited to 'lib/sqlalchemy/sql')
-rw-r--r-- | lib/sqlalchemy/sql/ddl.py | 4 | ||||
-rw-r--r-- | lib/sqlalchemy/sql/elements.py | 14 | ||||
-rw-r--r-- | lib/sqlalchemy/sql/schema.py | 2 |
3 files changed, 18 insertions, 2 deletions
diff --git a/lib/sqlalchemy/sql/ddl.py b/lib/sqlalchemy/sql/ddl.py index 3bd831292..f1012292b 100644 --- a/lib/sqlalchemy/sql/ddl.py +++ b/lib/sqlalchemy/sql/ddl.py @@ -373,6 +373,10 @@ class _CreateDropBase(DDLElement): self.element = element self.bind = bind + @property + def stringify_dialect(self): + return self.element.create_drop_stringify_dialect + def _create_rule_disable(self, compiler): """Allow disable of _create_rule using a callable. diff --git a/lib/sqlalchemy/sql/elements.py b/lib/sqlalchemy/sql/elements.py index 03476633a..86611baeb 100644 --- a/lib/sqlalchemy/sql/elements.py +++ b/lib/sqlalchemy/sql/elements.py @@ -199,6 +199,9 @@ class ClauseElement( """ supports_execution = False + + stringify_dialect = "default" + _from_objects = [] bind = None description = None @@ -435,6 +438,7 @@ class ClauseElement( return self @util.preload_module("sqlalchemy.engine.default") + @util.preload_module("sqlalchemy.engine.url") def compile(self, bind=None, dialect=None, **kw): """Compile this SQL expression. @@ -482,14 +486,20 @@ class ClauseElement( """ - default = util.preloaded.engine_default if not dialect: if bind: dialect = bind.dialect elif self.bind: dialect = self.bind.dialect else: - dialect = default.StrCompileDialect() + if self.stringify_dialect == "default": + default = util.preloaded.engine_default + dialect = default.StrCompileDialect() + else: + url = util.preloaded.engine_url + dialect = url.URL.create( + self.stringify_dialect + ).get_dialect()() return self._compiler(dialect, **kw) diff --git a/lib/sqlalchemy/sql/schema.py b/lib/sqlalchemy/sql/schema.py index ab635cd56..98ea8648a 100644 --- a/lib/sqlalchemy/sql/schema.py +++ b/lib/sqlalchemy/sql/schema.py @@ -100,6 +100,8 @@ class SchemaItem(SchemaEventTarget, visitors.Visitable): __visit_name__ = "schema_item" + create_drop_stringify_dialect = "default" + def _init_items(self, *args, **kw): """Initialize the list of child items for this SchemaItem.""" for item in args: |