SV中map.set_sequencer()

该函数用于设置Map对象的序列化器，将Map对象转换为序列化字符串或从序列化字符串还原Map对象。

示例用法：

import json
from rasa.shared.core.slots import Slot
from rasa.shared.core.trackers import DialogueStateTracker
from rasa.shared.core.domain import Domain
from rasa.shared.utils.io import json_to_string, string_to_json
from rasa.core.brokers.broker import EventBroker
from rasa.core.tracker_store import TrackerStore
from rasa.core.events import SlotSet

# 创建一个空的Map对象
tracker = DialogueStateTracker("default", Domain([]), [], [])

# 设置序列化器为JSON
tracker_store = TrackerStore(
    domain=Domain([]),
    event_broker=EventBroker(),
    tracker_factory=lambda: tracker,
    generator=None,
)
tracker_store.tracker_serialization_type = TrackerStore.SERIALIZATION_JSON

# 设置序列化器为自定义的函数
def serialize_map(map_obj):
    return json.dumps(map_obj)

def deserialize_map(map_str):
    return string_to_json(map_str)

map_obj = {"a": 1, "b": 2}
map_store = MapStore(
    map_obj=map_obj,
    map_factory=lambda: map_obj,
    serialize_map=serialize_map,
    deserialize_map=deserialize_map,
)

# 使用map.set_sequencer()设置序列化器
map = Map()
map.set_sequencer(map_store)

# 将Map对象转换为序列化字符串
map_str = map.serialize()

# 从序列化字符串还原Map对象
map_obj_2 = Map.deserialize(map_str)