Fixed #27561 -- Added Oracle support for binary "or" operator.

Removed DatabaseFeatures.supports_bitwise_or feature (unused, always True).

django/db/backends/base/features.py

@@ -57,7 +57,6 @@ class BaseDatabaseFeatures(object):
     # Is there a REAL datatype in addition to floats/doubles?
     has_real_datatype = False
     supports_subqueries_in_group_by = True
-    supports_bitwise_or = True
 
     # Is there a true datatype for uuid?
     has_native_uuid_field = False

django/db/backends/oracle/features.py

@@ -14,7 +14,6 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     supports_subqueries_in_group_by = False
     supports_transactions = True
     supports_timezones = False
-    supports_bitwise_or = False
     has_native_duration_field = True
     can_defer_constraint_checks = True
     supports_partially_nullable_unique_constraints = False

django/db/backends/oracle/operations.py

@@ -442,7 +442,8 @@ WHEN (new.%(col_name)s IS NULL)
         elif connector == '&':
             return 'BITAND(%s)' % ','.join(sub_expressions)
         elif connector == '|':
-            raise NotImplementedError("Bit-wise or is not supported in Oracle.")
+            lhs, rhs = sub_expressions
+            return 'BITAND(-%(lhs)s-1,%(rhs)s)+%(lhs)s' % {'lhs': lhs, 'rhs': rhs}
         elif connector == '^':
             return 'POWER(%s)' % ','.join(sub_expressions)
         return super(DatabaseOperations, self).combine_expression(connector, sub_expressions)

tests/expressions/tests.py

@@ -741,7 +741,6 @@ class ExpressionOperatorTests(TestCase):
         self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 40)
         self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(15.500, places=3))
 
-    @skipUnlessDBFeature('supports_bitwise_or')
     def test_lefthand_bitwise_or(self):
         # LH Bitwise or on integers
         Number.objects.filter(pk=self.n.pk).update(integer=F('integer').bitor(48))