"""
DBHub 风格 SQL 执行与元数据探索。

**实现单一来源**：``backend/db/dbhub_tools.py``（含 ``execute_sql`` / ``execute_sql_all`` /
``execute_sql_count_only`` / ``search_objects`` / ``probe_sql_execution_status`` / ``probe_sql_execution_status_ex``）。

本文件将 ``backend`` 加入 ``sys.path`` 后从 ``db`` 包转发，避免 ``tools/`` 与 ``backend/db`` 双份漂移。
若你在本仓库内迭代 DB 工具逻辑，请直接修改 ``backend/db/dbhub_tools.py``。
"""

from __future__ import annotations

import sys
from pathlib import Path

_root = Path(__file__).resolve().parents[1]
_backend = _root / "backend"
if _backend.is_dir() and str(_backend) not in sys.path:
    sys.path.insert(0, str(_backend))

from db.dbhub_tools import (  # noqa: E402
    DbHubTools,
    dbhub_tools,
    execute_sql,
    execute_sql_all,
    execute_sql_count_only,
    probe_sql_execution_status,
    probe_sql_execution_status_ex,
    search_objects,
)

__all__ = [
    "DbHubTools",
    "dbhub_tools",
    "execute_sql",
    "execute_sql_all",
    "execute_sql_count_only",
    "probe_sql_execution_status",
    "probe_sql_execution_status_ex",
    "search_objects",
]