Python Connection.get方法代码示例

# 需要导入模块: from durus.connection import Connection [as 别名]
# 或者: from durus.connection.Connection import get [as 别名]
 def check_oid_reuse(self):
     # Requires ShelfStorage oid reuse pack semantics
     s1 = ClientStorage(address=self.address)
     s1.oid_pool_size = 1
     c1 = Connection(s1)
     r1 = c1.get_root()
     s2 = ClientStorage(address=self.address)
     s2.oid_pool_size = 1
     c2 = Connection(s2)
     r2 = c2.get_root()
     r1['a'] = PersistentDict()
     r1['b'] = PersistentDict()
     c1.commit()
     c2.abort()
     a_oid = r1['a']._p_oid
     assert 'a' in r1 and 'b' in r1 and len(r1['b']) == 0
     assert 'a' in r2 and 'b' in r2 and len(r2['b']) == 0
     del r2['a'] # remove only reference to a
     c2.commit()
     c2.pack() # force relinquished oid back into availability
     sleep(0.5) # Give time for pack to complete
     c2.abort()
     assert c2.get(a_oid) is None
     c1.abort()
     assert c1.get(a_oid)._p_is_ghost()
     r2['b']['new'] = Persistent()
     r2['b']['new'].bogus = 1
     c2.commit()
     assert c2.get(a_oid) is r2['b']['new']
     c1.abort()
     assert c1.get(a_oid).__class__ == PersistentDict
     r1['b']['new'].bogus
     assert c1.get(a_oid).__class__ == Persistent
     s1.close()

# 需要导入模块: from durus.connection import Connection [as 别名]
# 或者: from durus.connection.Connection import get [as 别名]
def interactive_client(file, host, port, cache_size, readonly, repair,
                       startup):
    if file:
        storage = FileStorage(file, readonly=readonly, repair=repair)
        description = file
    else:
        wait_for_server(host, port)
        storage = ClientStorage(host=host, port=port)
        description = "%s:%s" % (host, port)
    connection = Connection(storage, cache_size=cache_size)
    namespace = {'connection': connection,
                 'root': connection.get(0),
                 'get': connection.get,
                 'sys': sys,
                 'os': os,
                 'p64': p64,
                 'u64': u64,
                 'pp': pprint}
    configure_readline(namespace, os.path.expanduser("~/.durushistory"))
    console = InteractiveConsole(namespace)
    if startup:
        console.runsource('execfile("%s")' % os.path.expanduser(startup))
    help = ('    connection -> the connection\n'
            '    root       -> get(0)\n'
            '    get(oid)   -> get an object\n'
            '    pp(object) -> pretty-print')
    console.interact('Durus (%s)\n%s' % (description, help))

# 需要导入模块: from durus.connection import Connection [as 别名]
# 或者: from durus.connection.Connection import get [as 别名]
 def check_conflict(self):
     b = Connection(self._get_storage())
     c = Connection(self._get_storage())
     rootb = b.get(int8_to_str(0))
     rootb['b'] = Persistent()
     rootc = c.get(int8_to_str(0))
     rootc['c'] = Persistent()
     c.commit()
     raises(ConflictError, b.commit)
     raises(KeyError, rootb.__getitem__, 'c')
     transaction_serial = b.transaction_serial
     b.abort()
     assert b.get_transaction_serial() > transaction_serial
     assert rootb._p_is_ghost()
     rootc['d'] = Persistent()
     c.commit()
     rootb['d']

# 需要导入模块: from durus.connection import Connection [as 别名]
# 或者: from durus.connection.Connection import get [as 别名]
def repickle_storage(storage):
    """(storage: FileStorage)
    Force very object to be loaded and re-pickled.
    This also packs, so that all of the old pickles are removed.
    """
    connection = Connection(storage)
    for j, oid in enumerate(storage.index):
        obj = connection.get(oid)
        obj._p_note_change()
        if j and j % 10000 == 0:
            connection.commit()
    connection.commit()
    storage.pack()

# 需要导入模块: from durus.connection import Connection [as 别名]
# 或者: from durus.connection.Connection import get [as 别名]
 def a(self):
     f = File(prefix='shelftest')
     name = f.get_name()
     f.close()
     s = FileStorage(name)
     c = Connection(s)
     r = c.get_root()
     for x in range(10):
         r["a%s" % x] = Persistent()
         c.commit()
     deleted_oids = [
         r['a0']._p_oid, r['a2']._p_oid, r['a7']._p_oid, r['a8']._p_oid]
     del r['a0']
     del r['a2']
     del r['a7']
     del r['a8']
     c.commit()
     c.pack()
     c.abort()
     assert c.get(deleted_oids[0])._p_is_ghost()
     assert c.get(deleted_oids[1])._p_is_ghost()
     raises(ReadConflictError, getattr, c.get(deleted_oids[0]), 'a')
     assert len([repr(oid) for oid, record in s.gen_oid_record()]) == 7
     c.commit()
     c.pack()
     new_oid = s.new_oid()
     assert new_oid == deleted_oids[-1], (new_oid, deleted_oids)
     new_oid = s.new_oid()
     assert new_oid == deleted_oids[-2], (new_oid, deleted_oids)
     new_oid = s.new_oid()
     assert new_oid == deleted_oids[-3], (new_oid, deleted_oids)
     new_oid = s.new_oid()
     assert new_oid == deleted_oids[-4], (new_oid, deleted_oids)
     new_oid = s.new_oid()
     assert new_oid == int8_to_str(11), repr(new_oid)
     new_oid = s.new_oid()
     assert new_oid == int8_to_str(12), repr(new_oid)