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-rw-r--r--lib/sqlalchemy/orm/mapper.py5
1 files changed, 1 insertions, 4 deletions
diff --git a/lib/sqlalchemy/orm/mapper.py b/lib/sqlalchemy/orm/mapper.py
index 4269e332f..dfd8a12b7 100644
--- a/lib/sqlalchemy/orm/mapper.py
+++ b/lib/sqlalchemy/orm/mapper.py
@@ -208,6 +208,7 @@ class Mapper(_InspectionAttr):
# configure_mappers() until construction succeeds)
_CONFIGURE_MUTEX.acquire()
try:
+ events._MapperEventsHold.populate(class_, self)
self._configure_inheritance()
self._configure_legacy_instrument_class()
self._configure_class_instrumentation()
@@ -659,10 +660,6 @@ class Mapper(_InspectionAttr):
if ext not in super_extensions:
ext._adapt_listener(self, ext)
- if self.inherits:
- self.class_manager.dispatch._update(
- self.inherits.class_manager.dispatch)
-
def _configure_class_instrumentation(self):
"""If this mapper is to be a primary mapper (i.e. the
non_primary flag is not set), associate this Mapper with the