sorry, this example is just ridiculous

diff --git a/examples/pickle/__init__.py b/examples/pickle/__init__.py
deleted file mode 100644 (file)
index e69de29..0000000

diff --git a/examples/pickle/custom_pickler.py b/examples/pickle/custom_pickler.py
deleted file mode 100644 (file)
index a02b708..0000000
--- a/examples/pickle/custom_pickler.py
+++ /dev/null
@@ -1,91 +0,0 @@
-"""illustrates one way to use a custom pickler that is session-aware."""
-
-from sqlalchemy import MetaData, Table, Column, Integer, String, PickleType
-from sqlalchemy.orm import (mapper, create_session, MapperExtension,
-    class_mapper, EXT_CONTINUE)
-from sqlalchemy.orm.session import object_session
-from cStringIO import StringIO
-from pickle import Pickler, Unpickler
-import threading
-
-meta = MetaData('sqlite://')
-meta.bind.echo = True
-
-class MyExt(MapperExtension):
-    def populate_instance(self, mapper, selectcontext, row, instance, **flags):
-        MyPickler.sessions.current = selectcontext.session
-        return EXT_CONTINUE
-    def before_insert(self, mapper, connection, instance):
-        MyPickler.sessions.current = object_session(instance)
-        return EXT_CONTINUE
-    def before_update(self, mapper, connection, instance):
-        MyPickler.sessions.current = object_session(instance)
-        return EXT_CONTINUE
-    
-class MyPickler(object):
-    sessions = threading.local()
-
-    def persistent_id(self, obj):
-        if getattr(obj, "id", None) is None:
-            sess = MyPickler.sessions.current
-            newsess = create_session(bind=sess.connection(class_mapper(Bar)))
-            newsess.add(obj)
-            newsess.flush()
-        key = "%s:%s" % (type(obj).__name__, obj.id)
-        return key
-
-    def persistent_load(self, key):
-        name, ident = key.split(":")
-        sess = MyPickler.sessions.current
-        return sess.query(Bar).get(ident)
-
-    def dumps(self, graph, protocol):
-        src = StringIO()
-        pickler = Pickler(src)
-        pickler.persistent_id = self.persistent_id
-        pickler.dump(graph)
-        return src.getvalue()
-
-    def loads(self, data):
-        dst = StringIO(data)
-        unpickler = Unpickler(dst)
-        unpickler.persistent_load = self.persistent_load
-        return unpickler.load()
-
-foo_table = Table('foo', meta, 
-    Column('id', Integer, primary_key=True),
-    Column('bar', PickleType(pickler=MyPickler()), nullable=False))
-
-bar_table = Table('bar', meta,
-    Column('id', Integer, primary_key=True),
-    Column('data', String(40)))
-
-meta.create_all()
-
-class Foo(object):
-    pass
-
-class Bar(object):
-    def __init__(self, value):
-        self.data = value
-
-    def __eq__(self, other):
-        if not other is None:
-            return self.data == other.data
-        return NotImplemented
-
-
-mapper(Foo, foo_table, extension=MyExt())
-mapper(Bar, bar_table)
-
-sess = create_session()
-f = Foo()
-f.bar = Bar('some bar')
-sess.add(f)
-sess.flush()
-sess.expunge_all()
-
-del MyPickler.sessions.current
-
-f = sess.query(Foo).get(f.id)
-assert f.bar.data == 'some bar'