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from dataclasses import dataclass
from typing import Any, Callable
from litestar.serialization import decode_json, encode_json
from advanced_alchemy.config import EngineConfig as _EngineConfig
__all__ = ("EngineConfig",)
def serializer(value: Any) -> str:
"""Serialize JSON field values.
Args:
value: Any json serializable value.
Returns:
JSON string.
"""
return encode_json(value).decode("utf-8")
@dataclass
class EngineConfig(_EngineConfig):
"""Configuration for SQLAlchemy's :class:`Engine <sqlalchemy.engine.Engine>`.
For details see: https://docs.sqlalchemy.org/en/20/core/engines.html
"""
json_deserializer: Callable[[str], Any] = decode_json
"""For dialects that support the :class:`JSON <sqlalchemy.types.JSON>` datatype, this is a Python callable that will
convert a JSON string to a Python object. By default, this is set to Litestar's decode_json function."""
json_serializer: Callable[[Any], str] = serializer
"""For dialects that support the JSON datatype, this is a Python callable that will render a given object as JSON.
By default, Litestar's encode_json function is used."""
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