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Python pickle.dumps函数代码示例

本文整理汇总了Python中sqlalchemy.util.pickle.dumps函数的典型用法代码示例。如果您正苦于以下问题:Python dumps函数的具体用法?Python dumps怎么用?Python dumps使用的例子?那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。


在下文中一共展示了dumps函数的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。

示例1: test_class_deferred_cols

    def test_class_deferred_cols(self):
        addresses, users = (self.tables.addresses,
                                self.tables.users)

        mapper(User, users, properties={
            'name': sa.orm.deferred(users.c.name),
            'addresses': relationship(Address, backref="user")
        })
        mapper(Address, addresses, properties={
            'email_address': sa.orm.deferred(addresses.c.email_address)
        })
        sess = create_session()
        u1 = User(name='ed')
        u1.addresses.append(Address(email_address='[email protected]'))
        sess.add(u1)
        sess.flush()
        sess.expunge_all()
        u1 = sess.query(User).get(u1.id)
        assert 'name' not in u1.__dict__
        assert 'addresses' not in u1.__dict__

        u2 = pickle.loads(pickle.dumps(u1))
        sess2 = create_session()
        sess2.add(u2)
        eq_(u2.name, 'ed')
        eq_(u2, User(name='ed', addresses=[Address(email_address='[email protected]')]))

        u2 = pickle.loads(pickle.dumps(u1))
        sess2 = create_session()
        u2 = sess2.merge(u2, load=False)
        eq_(u2.name, 'ed')
        eq_(u2, User(name='ed', addresses=[Address(email_address='[email protected]')]))
开发者ID:afeide,项目名称:LuoYunCloud,代码行数:32,代码来源:test_pickled.py

示例2: test_options_with_descriptors

    def test_options_with_descriptors(self):
        users, addresses, dingalings = (self.tables.users,
                                self.tables.addresses,
                                self.tables.dingalings)

        mapper(User, users, properties={
            'addresses':relationship(Address, backref="user")
        })
        mapper(Address, addresses, properties={
            'dingaling':relationship(Dingaling)
        })
        mapper(Dingaling, dingalings)
        sess = create_session()
        u1 = User(name='ed')
        u1.addresses.append(Address(email_address='[email protected]'))
        sess.add(u1)
        sess.flush()
        sess.expunge_all()

        for opt in [
            sa.orm.joinedload(User.addresses),
            sa.orm.joinedload("addresses"),
            sa.orm.defer("name"),
            sa.orm.defer(User.name),
            sa.orm.joinedload("addresses", Address.dingaling),
        ]:
            opt2 = pickle.loads(pickle.dumps(opt))
            eq_(opt.key, opt2.key)

        u1 = sess.query(User).options(opt).first()
        u2 = pickle.loads(pickle.dumps(u1))
开发者ID:afeide,项目名称:LuoYunCloud,代码行数:31,代码来源:test_pickled.py

示例3: test_instance_deferred_cols

    def test_instance_deferred_cols(self):
        users, addresses = (self.tables.users, self.tables.addresses)

        mapper(
            User,
            users,
            properties={"addresses": relationship(Address, backref="user")},
        )
        mapper(Address, addresses)

        sess = create_session()
        u1 = User(name="ed")
        u1.addresses.append(Address(email_address="[email protected]"))
        sess.add(u1)
        sess.flush()
        sess.expunge_all()

        u1 = (
            sess.query(User)
            .options(
                sa.orm.defer("name"), sa.orm.defer("addresses.email_address")
            )
            .get(u1.id)
        )
        assert "name" not in u1.__dict__
        assert "addresses" not in u1.__dict__

        u2 = pickle.loads(pickle.dumps(u1))
        sess2 = create_session()
        sess2.add(u2)
        eq_(u2.name, "ed")
        assert "addresses" not in u2.__dict__
        ad = u2.addresses[0]
        assert "email_address" not in ad.__dict__
        eq_(ad.email_address, "[email protected]")
        eq_(
            u2,
            User(name="ed", addresses=[Address(email_address="[email protected]")]),
        )

        u2 = pickle.loads(pickle.dumps(u1))
        sess2 = create_session()
        u2 = sess2.merge(u2, load=False)
        eq_(u2.name, "ed")
        assert "addresses" not in u2.__dict__
        ad = u2.addresses[0]

        # mapper options now transmit over merge(),
        # new as of 0.6, so email_address is deferred.
        assert "email_address" not in ad.__dict__

        eq_(ad.email_address, "[email protected]")
        eq_(
            u2,
            User(name="ed", addresses=[Address(email_address="[email protected]")]),
        )
开发者ID:BY-jk,项目名称:sqlalchemy,代码行数:56,代码来源:test_pickled.py

示例4: test_instance_lazy_relation_loaders

    def test_instance_lazy_relation_loaders(self):
        users, addresses = (self.tables.users,
                                self.tables.addresses)

        mapper(User, users, properties={
            'addresses': relationship(Address, lazy='noload')
        })
        mapper(Address, addresses)

        sess = Session()
        u1 = User(name='ed', addresses=[
                        Address(
                            email_address='[email protected]',
                        )
                ])

        sess.add(u1)
        sess.commit()
        sess.close()

        u1 = sess.query(User).options(
                                lazyload(User.addresses)
                            ).first()
        u2 = pickle.loads(pickle.dumps(u1))

        sess = Session()
        sess.add(u2)
        assert u2.addresses
开发者ID:afeide,项目名称:LuoYunCloud,代码行数:28,代码来源:test_pickled.py

示例5: test_polymorphic_deferred

    def test_polymorphic_deferred(self):
        email_users, users = (self.tables.email_users, self.tables.users)

        mapper(
            User,
            users,
            polymorphic_identity="user",
            polymorphic_on=users.c.type,
        )
        mapper(
            EmailUser,
            email_users,
            inherits=User,
            polymorphic_identity="emailuser",
        )

        eu = EmailUser(name="user1", email_address="[email protected]")
        sess = create_session()
        sess.add(eu)
        sess.flush()
        sess.expunge_all()

        eu = sess.query(User).first()
        eu2 = pickle.loads(pickle.dumps(eu))
        sess2 = create_session()
        sess2.add(eu2)
        assert "email_address" not in eu2.__dict__
        eq_(eu2.email_address, "[email protected]")
开发者ID:BY-jk,项目名称:sqlalchemy,代码行数:28,代码来源:test_pickled.py

示例6: test_collection_setstate

    def test_collection_setstate(self):
        """test a particular cycle that requires CollectionAdapter
        to not rely upon InstanceState to deserialize."""

        m = MetaData()
        c1 = Table('c1', m,
            Column('parent_id', String,
                        ForeignKey('p.id'), primary_key=True)
        )
        c2 = Table('c2', m,
            Column('parent_id', String,
                        ForeignKey('p.id'), primary_key=True)
        )
        p = Table('p', m,
            Column('id', String, primary_key=True)
        )

        mapper(Parent, p, properties={
            'children1':relationship(Child1),
            'children2':relationship(Child2)
        })
        mapper(Child1, c1)
        mapper(Child2, c2)

        obj = Parent()
        screen1 = Screen(obj)
        screen1.errors = [obj.children1, obj.children2]
        screen2 = Screen(Child2(), screen1)
        pickle.loads(pickle.dumps(screen2))
开发者ID:afeide,项目名称:LuoYunCloud,代码行数:29,代码来源:test_pickled.py

示例7: test_weakref_pickled

    def test_weakref_pickled(self):
        users, User = self.tables.users, pickleable.User

        s = create_session()
        mapper(User, users)

        s.add(User(name='ed'))
        s.flush()
        assert not s.dirty

        user = s.query(User).one()
        user.name = 'fred'
        s.expunge(user)

        u2 = pickle.loads(pickle.dumps(user))

        del user
        s.add(u2)

        del u2
        gc_collect()

        assert len(s.identity_map) == 1
        assert len(s.dirty) == 1
        assert None not in s.dirty
        s.flush()
        gc_collect()
        assert not s.dirty

        assert not s.identity_map
开发者ID:DeepakAlevoor,项目名称:sqlalchemy,代码行数:30,代码来源:test_session.py

示例8: test_instance_deferred_cols

    def test_instance_deferred_cols(self):
        users, addresses = (self.tables.users, self.tables.addresses)

        mapper(User, users, properties={
            'addresses': relationship(Address, backref="user")
        })
        mapper(Address, addresses)

        sess = create_session()
        u1 = User(name='ed')
        u1.addresses.append(Address(email_address='[email protected]'))
        sess.add(u1)
        sess.flush()
        sess.expunge_all()

        u1 = sess.query(User).\
            options(sa.orm.defer('name'),
                    sa.orm.defer('addresses.email_address')).\
            get(u1.id)
        assert 'name' not in u1.__dict__
        assert 'addresses' not in u1.__dict__

        u2 = pickle.loads(pickle.dumps(u1))
        sess2 = create_session()
        sess2.add(u2)
        eq_(u2.name, 'ed')
        assert 'addresses' not in u2.__dict__
        ad = u2.addresses[0]
        assert 'email_address' not in ad.__dict__
        eq_(ad.email_address, '[email protected]')
        eq_(u2, User(name='ed', addresses=[
            Address(email_address='[email protected]')]))

        u2 = pickle.loads(pickle.dumps(u1))
        sess2 = create_session()
        u2 = sess2.merge(u2, load=False)
        eq_(u2.name, 'ed')
        assert 'addresses' not in u2.__dict__
        ad = u2.addresses[0]

        # mapper options now transmit over merge(),
        # new as of 0.6, so email_address is deferred.
        assert 'email_address' not in ad.__dict__

        eq_(ad.email_address, '[email protected]')
        eq_(u2, User(name='ed', addresses=[
            Address(email_address='[email protected]')]))
开发者ID:zhsj,项目名称:sqlalchemy,代码行数:47,代码来源:test_pickled.py

示例9: test_load

    def test_load(self):
        s = Session()

        with_poly = with_polymorphic(Person, [Engineer, Manager], flat=True)
        emp = s.query(Company).options(
            subqueryload(Company.employees.of_type(with_poly))).first()

        e2 = pickle.loads(pickle.dumps(emp))
开发者ID:m32,项目名称:sqlalchemy,代码行数:8,代码来源:test_pickled.py

示例10: test_class_deferred_cols

    def test_class_deferred_cols(self):
        addresses, users = (self.tables.addresses, self.tables.users)

        mapper(
            User,
            users,
            properties={
                "name": sa.orm.deferred(users.c.name),
                "addresses": relationship(Address, backref="user"),
            },
        )
        mapper(
            Address,
            addresses,
            properties={
                "email_address": sa.orm.deferred(addresses.c.email_address)
            },
        )
        sess = create_session()
        u1 = User(name="ed")
        u1.addresses.append(Address(email_address="[email protected]"))
        sess.add(u1)
        sess.flush()
        sess.expunge_all()
        u1 = sess.query(User).get(u1.id)
        assert "name" not in u1.__dict__
        assert "addresses" not in u1.__dict__

        u2 = pickle.loads(pickle.dumps(u1))
        sess2 = create_session()
        sess2.add(u2)
        eq_(u2.name, "ed")
        eq_(
            u2,
            User(name="ed", addresses=[Address(email_address="[email protected]")]),
        )

        u2 = pickle.loads(pickle.dumps(u1))
        sess2 = create_session()
        u2 = sess2.merge(u2, load=False)
        eq_(u2.name, "ed")
        eq_(
            u2,
            User(name="ed", addresses=[Address(email_address="[email protected]")]),
        )
开发者ID:BY-jk,项目名称:sqlalchemy,代码行数:45,代码来源:test_pickled.py

示例11: persistent_id

 def persistent_id(obj):
     # print "serializing:", repr(obj)
     if isinstance(obj, QueryableAttribute):
         cls = obj.impl.class_
         key = obj.impl.key
         id = "attribute:" + key + ":" + b64encode(pickle.dumps(cls))
     elif isinstance(obj, Mapper) and not obj.non_primary:
         id = "mapper:" + b64encode(pickle.dumps(obj.class_))
     elif isinstance(obj, Table):
         id = "table:" + str(obj)
     elif isinstance(obj, Column) and isinstance(obj.table, Table):
         id = "column:" + str(obj.table) + ":" + obj.key
     elif isinstance(obj, Session):
         id = "session:"
     elif isinstance(obj, Engine):
         id = "engine:"
     else:
         return None
     return id
开发者ID:lulzmachine,项目名称:rad,代码行数:19,代码来源:serializer.py

示例12: test_pickled_update

    def test_pickled_update(self):
        users, User = self.tables.users, pickleable.User

        mapper(User, users)
        sess1 = create_session()
        sess2 = create_session()
        u1 = User(name="u1")
        sess1.add(u1)
        assert_raises_message(sa.exc.InvalidRequestError, "already attached to session", sess2.add, u1)
        u2 = pickle.loads(pickle.dumps(u1))
        sess2.add(u2)
开发者ID:vishvananda,项目名称:sqlalchemy,代码行数:11,代码来源:test_session.py

示例13: test_invalidated_flag_pickle

    def test_invalidated_flag_pickle(self):
        users, addresses = (self.tables.users, self.tables.addresses)

        mapper(User, users, properties={
            'addresses': relationship(Address, lazy='noload')
        })
        mapper(Address, addresses)

        u1 = User()
        u1.addresses.append(Address())
        u2 = pickle.loads(pickle.dumps(u1))
        u2.addresses.append(Address())
        eq_(len(u2.addresses), 2)
开发者ID:zhsj,项目名称:sqlalchemy,代码行数:13,代码来源:test_pickled.py

示例14: test_no_mappers

    def test_no_mappers(self):
        users = self.tables.users


        umapper = mapper(User, users)
        u1 = User(name='ed')
        u1_pickled = pickle.dumps(u1, -1)

        clear_mappers()

        assert_raises_message(
            orm_exc.UnmappedInstanceError,
            "Cannot deserialize object of type <class 'sqlalchemy.testing.pickleable.User'> - no mapper()",
            pickle.loads, u1_pickled)
开发者ID:afeide,项目名称:LuoYunCloud,代码行数:14,代码来源:test_pickled.py

示例15: test_options_of_type

    def test_options_of_type(self):

        with_poly = with_polymorphic(Person, [Engineer, Manager], flat=True)
        for opt, serialized in [
            (
                sa.orm.joinedload(Company.employees.of_type(Engineer)),
                [(Company, "employees", Engineer)]),
            (
                sa.orm.joinedload(Company.employees.of_type(with_poly)),
                [(Company, "employees", None)]),
        ]:
            opt2 = pickle.loads(pickle.dumps(opt))
            eq_(opt.__getstate__()['path'], serialized)
            eq_(opt2.__getstate__()['path'], serialized)
开发者ID:m32,项目名称:sqlalchemy,代码行数:14,代码来源:test_pickled.py


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