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authorMike Bayer <mike_mp@zzzcomputing.com>2015-05-15 12:35:21 -0400
committerMike Bayer <mike_mp@zzzcomputing.com>2015-05-15 12:38:28 -0400
commitd178707ecaeb547470e2b7b37b9a939abc69cbd0 (patch)
treedc4b674748cf673a123b90797c3525c3a13ef657 /lib/sqlalchemy/engine/default.py
parent64c1f2e5688879e1cc087f4e4a893d32267fd1fb (diff)
downloadsqlalchemy-d178707ecaeb547470e2b7b37b9a939abc69cbd0.tar.gz
- Added support for the case of the misbehaving DBAPI that has
pep-249 exception names linked to exception classes of an entirely different name, preventing SQLAlchemy's own exception wrapping from wrapping the error appropriately. The SQLAlchemy dialect in use needs to implement a new accessor :attr:`.DefaultDialect.dbapi_exception_translation_map` to support this feature; this is implemented now for the py-postgresql dialect. fixes #3421
Diffstat (limited to 'lib/sqlalchemy/engine/default.py')
-rw-r--r--lib/sqlalchemy/engine/default.py9
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/sqlalchemy/engine/default.py b/lib/sqlalchemy/engine/default.py
index 763e85f82..9330a602c 100644
--- a/lib/sqlalchemy/engine/default.py
+++ b/lib/sqlalchemy/engine/default.py
@@ -157,6 +157,15 @@ class DefaultDialect(interfaces.Dialect):
reflection_options = ()
+ dbapi_exception_translation_map = util.immutabledict()
+ """mapping used in the extremely unusual case that a DBAPI's
+ published exceptions don't actually have the __name__ that they
+ are linked towards.
+
+ .. versionadded:: 1.0.5
+
+ """
+
def __init__(self, convert_unicode=False,
encoding='utf-8', paramstyle=None, dbapi=None,
implicit_returning=None,