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-rw-r--r--lib/sqlalchemy/engine/interfaces.py71
1 files changed, 68 insertions, 3 deletions
diff --git a/lib/sqlalchemy/engine/interfaces.py b/lib/sqlalchemy/engine/interfaces.py
index 5f66e54b5..5f0d74328 100644
--- a/lib/sqlalchemy/engine/interfaces.py
+++ b/lib/sqlalchemy/engine/interfaces.py
@@ -654,17 +654,82 @@ class Dialect(object):
return None
def reset_isolation_level(self, dbapi_conn):
- """Given a DBAPI connection, revert its isolation to the default."""
+ """Given a DBAPI connection, revert its isolation to the default.
+
+ Note that this is a dialect-level method which is used as part
+ of the implementation of the :class:`.Connection` and
+ :class:`.Engine`
+ isolation level facilities; these APIs should be preferred for
+ most typical use cases.
+
+ .. seealso::
+
+ :meth:`.Connection.get_isolation_level` - view current level
+
+ :attr:`.Connection.default_isolation_level` - view default level
+
+ :paramref:`.Connection.execution_options.isolation_level` -
+ set per :class:`.Connection` isolation level
+
+ :paramref:`.create_engine.isolation_level` -
+ set per :class:`.Engine` isolation level
+
+ """
raise NotImplementedError()
def set_isolation_level(self, dbapi_conn, level):
- """Given a DBAPI connection, set its isolation level."""
+ """Given a DBAPI connection, set its isolation level.
+
+ Note that this is a dialect-level method which is used as part
+ of the implementation of the :class:`.Connection` and
+ :class:`.Engine`
+ isolation level facilities; these APIs should be preferred for
+ most typical use cases.
+
+ .. seealso::
+
+ :meth:`.Connection.get_isolation_level` - view current level
+
+ :attr:`.Connection.default_isolation_level` - view default level
+
+ :paramref:`.Connection.execution_options.isolation_level` -
+ set per :class:`.Connection` isolation level
+
+ :paramref:`.create_engine.isolation_level` -
+ set per :class:`.Engine` isolation level
+
+ """
raise NotImplementedError()
def get_isolation_level(self, dbapi_conn):
- """Given a DBAPI connection, return its isolation level."""
+ """Given a DBAPI connection, return its isolation level.
+
+ When working with a :class:`.Connection` object, the corresponding
+ DBAPI connection may be procured using the
+ :attr:`.Connection.connection` accessor.
+
+ Note that this is a dialect-level method which is used as part
+ of the implementation of the :class:`.Connection` and
+ :class:`.Engine` isolation level facilities;
+ these APIs should be preferred for most typical use cases.
+
+
+ .. seealso::
+
+ :meth:`.Connection.get_isolation_level` - view current level
+
+ :attr:`.Connection.default_isolation_level` - view default level
+
+ :paramref:`.Connection.execution_options.isolation_level` -
+ set per :class:`.Connection` isolation level
+
+ :paramref:`.create_engine.isolation_level` -
+ set per :class:`.Engine` isolation level
+
+
+ """
raise NotImplementedError()