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author | Diana Clarke <diana.joan.clarke@gmail.com> | 2012-11-19 14:16:39 -0500 |
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committer | Diana Clarke <diana.joan.clarke@gmail.com> | 2012-11-19 14:16:39 -0500 |
commit | 03687b36b78be86c0f2a01eeb658c5b52fbd6c76 (patch) | |
tree | 9b8ccc3fed989ef64d41a53d091e2309836a9992 /lib/sqlalchemy/ext/serializer.py | |
parent | ef326d9fe39ab493dd4aeaf2cecf9052a04d49b7 (diff) | |
download | sqlalchemy-03687b36b78be86c0f2a01eeb658c5b52fbd6c76.tar.gz |
just a pep8 pass of lib/sqlalchemy/ext
Diffstat (limited to 'lib/sqlalchemy/ext/serializer.py')
-rw-r--r-- | lib/sqlalchemy/ext/serializer.py | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/lib/sqlalchemy/ext/serializer.py b/lib/sqlalchemy/ext/serializer.py index 8a5882107..3ed41f48a 100644 --- a/lib/sqlalchemy/ext/serializer.py +++ b/lib/sqlalchemy/ext/serializer.py @@ -39,18 +39,19 @@ The serializer module is only appropriate for query structures. It is not needed for: * instances of user-defined classes. These contain no references to engines, - sessions or expression constructs in the typical case and can be serialized directly. + sessions or expression constructs in the typical case and can be serialized + directly. -* Table metadata that is to be loaded entirely from the serialized structure (i.e. is - not already declared in the application). Regular pickle.loads()/dumps() can - be used to fully dump any ``MetaData`` object, typically one which was reflected - from an existing database at some previous point in time. The serializer module - is specifically for the opposite case, where the Table metadata is already present - in memory. +* Table metadata that is to be loaded entirely from the serialized structure + (i.e. is not already declared in the application). Regular + pickle.loads()/dumps() can be used to fully dump any ``MetaData`` object, + typically one which was reflected from an existing database at some previous + point in time. The serializer module is specifically for the opposite case, + where the Table metadata is already present in memory. """ -from ..orm import class_mapper, Query +from ..orm import class_mapper from ..orm.session import Session from ..orm.mapper import Mapper from ..orm.attributes import QueryableAttribute @@ -78,7 +79,6 @@ b64decode = base64.b64decode __all__ = ['Serializer', 'Deserializer', 'dumps', 'loads'] - def Serializer(*args, **kw): pickler = pickle.Pickler(*args, **kw) @@ -107,6 +107,7 @@ def Serializer(*args, **kw): our_ids = re.compile(r'(mapper|table|column|session|attribute|engine):(.*)') + def Deserializer(file, metadata=None, scoped_session=None, engine=None): unpickler = pickle.Unpickler(file) @@ -147,15 +148,15 @@ def Deserializer(file, metadata=None, scoped_session=None, engine=None): unpickler.persistent_load = persistent_load return unpickler + def dumps(obj, protocol=0): buf = byte_buffer() pickler = Serializer(buf, protocol) pickler.dump(obj) return buf.getvalue() + def loads(data, metadata=None, scoped_session=None, engine=None): buf = byte_buffer(data) unpickler = Deserializer(buf, metadata, scoped_session, engine) return unpickler.load() - - |