1087 lines
38 KiB
Python
1087 lines
38 KiB
Python
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# coding: utf-8
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import os
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import sqlite3 as Engine
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import uuid
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from functools import reduce
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from itertools import chain
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from typing import Optional, TypeVar, Generic, Any, List, Dict, Generator, Iterable, Type
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try:
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import ujson as json
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except ImportError:
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try:
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os.system("btpip install ujson")
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import ujson as json
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except:
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import json
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from public.aaModel.fields import COMPARE
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from public.exceptions import HintException, PanelError
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from public.sqlite_easy import Db
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__all__ = ["aaManager", "Q"]
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# noinspection PyUnresolvedReferences
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M = TypeVar("M", bound="aaModel")
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# ==================== Patch ==================
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def _builtin(check_engine: Any = None) -> bool:
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if not check_engine:
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check_engine = Engine
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try:
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conn = check_engine.connect(":memory:")
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cursor = conn.cursor()
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cursor.execute("SELECT json_extract('{\"a\": 1}', '$.a')")
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cursor.execute("SELECT COUNT(*) FROM json_each('{\"a\":1, \"b\":2}')")
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conn.close()
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return True
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except:
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return False
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def _get_engine() -> tuple[bool, Any]:
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try:
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import pysqlite3 as engine
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flag = True
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except:
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try:
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os.system("btpip install pysqlite3-binary")
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import pysqlite3 as engine
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flag = True
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except:
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engine = Engine
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flag = False
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return flag, engine
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_ENGINE = None
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_INSTEAD = False
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_ORG = _builtin()
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if not _ORG:
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_INSTEAD, _ENGINE = _get_engine()
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else:
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_ENGINE = Engine
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# ==================== Patch End ==================
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def db_file_connect(db_name: str) -> Db:
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if not db_name:
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raise PanelError("db_file_connect_generator error, db_name is empty")
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if db_name == "default":
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return Db(db_name=db_name, engine=_ENGINE)
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else:
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db_root_dir = "/www/server/panel/data/db"
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os.makedirs(db_root_dir, exist_ok=True)
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db_path = os.path.join(db_root_dir, f"{db_name}")
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new = Db(db_name="", engine=_ENGINE, auto_connect=False)
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setattr(new, "_Db__DB_NAME", db_path)
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new._connect()
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return new
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class Operator:
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SIMPLE_OP = {
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"gt": ">", "lt": "<", "gte": ">=", "lte": "<=", "ne": "!=",
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}
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LIKE_OP = {
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"like": "%{}%", "startswith": "{}%", "endswith": "%{}",
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}
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def __init__(self, model_class: M, query: "Db.query"):
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self._model_class: M = model_class
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self._query = query
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self._tb = self._model_class.__table_name__
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self._fields = self._model_class._get_fields()
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self._serializes = self._model_class._get_serialized()
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self._flag = _ORG or _INSTEAD # fk flag
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def _q_error(self, key: str, act: str, val: Any, sp_act: tuple):
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raise HintException(
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"field: '%s' is not support '%s', you can use: %s" % (key, act, sp_act)
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)
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def _deep_equal(self, obj1: Any, obj2: Any) -> bool:
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if type(obj1) != type(obj2):
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return False
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if isinstance(obj1, dict):
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if set(obj1.keys()) != set(obj2.keys()):
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return False
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return all(self._deep_equal(obj1[k], obj2[k]) for k in obj1)
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if isinstance(obj1, list):
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if len(obj1) != len(obj2):
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return False
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return all(self._deep_equal(i1, i2) for i1, i2 in zip(obj1, obj2))
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return obj1 == obj2
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def _deep_equal_in(self, item: Any, container_list: List[Any]) -> bool:
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for elem in container_list:
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if self._deep_equal(item, elem):
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return True
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return False
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def _python_compare(self, v: Any, op_str: str, q_v: Any) -> bool:
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try:
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if op_str == "gt":
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return v > q_v
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if op_str == "lt":
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return v < q_v
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if op_str == "gte":
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return v >= q_v
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if op_str == "lte":
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return v <= q_v
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if op_str == "ne":
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return not self._deep_equal(v, q_v)
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if op_str == "like":
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return isinstance(v, str) and isinstance(q_v, str) and q_v in v
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if op_str == "startswith":
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return isinstance(v, str) and isinstance(q_v, str) and v.startswith(q_v)
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if op_str == "endswith":
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return isinstance(v, str) and isinstance(q_v, str) and v.endswith(q_v)
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if op_str == "in":
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return isinstance(q_v, list) and self._deep_equal_in(v, q_v)
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if op_str == "not_in":
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return isinstance(q_v, list) and not self._deep_equal_in(v, q_v)
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if op_str == "contains" or op_str == "any_contains":
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items_to_search = q_v
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if not isinstance(items_to_search, list):
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items_to_search = [items_to_search]
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if not items_to_search: # 如果搜索列表为空
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return True if op_str == "contains" else False # AND(empty)=True, OR(empty)=False
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match_results = []
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for item in items_to_search:
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found = False
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if isinstance(v, list):
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found = self._deep_equal_in(item, v)
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elif isinstance(v, str) and isinstance(item, str):
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found = item in v
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elif isinstance(v, dict): # 检查item是否为dict中的值
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found = self._deep_equal_in(item, list(v.values()))
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match_results.append(found)
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return all(match_results) if op_str == "contains" else any(match_results)
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except TypeError: # 比较不兼容的类型
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return False
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except Exception:
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return False
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return False
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def __generate_road(self, road):
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path = "$"
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for r in road:
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if r.isdigit():
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path += f"[{r}]"
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else:
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path += f".{r}"
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return path
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def __is_json(self, val: Any):
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if isinstance(val, str):
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val_str = val.strip()
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if val_str.startswith(("{", "[")) and val_str.endswith(("}", "]")):
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try:
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json.loads(val_str)
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return True, val
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except json.JSONDecodeError:
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pass
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if isinstance(val, (dict, list)):
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return True, json.dumps(val)
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return False, val
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def __navigate_path(self, json_data: Any, road: List[str]) -> tuple[Any, bool]:
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current_val = json_data
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for r in road:
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if isinstance(current_val, dict):
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if r in current_val:
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current_val = current_val[r]
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else:
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return None, False
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elif isinstance(current_val, list) and r.isdigit():
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idx = int(r)
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if 0 <= idx < len(current_val):
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current_val = current_val[idx]
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else:
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return None, False
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else:
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return None, False
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return current_val, True
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def __compare_operator(self, key: str, compare: str, val: Any, is_json: bool, sp_compare: tuple):
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def __contains_and_or(v: list, connector: str):
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if not v:
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return ("1=1" if connector == "AND" else "1=0"), []
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conditions = []
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params = []
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for item in v:
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if self._flag is True and not isinstance(item, (dict, list)):
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# simple val
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conditions.append(f"EXISTS(SELECT 1 FROM json_each({key}) WHERE value = ?)")
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params.append(item)
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else:
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# other | complicated val
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conditions.append(f"instr({key}, ?) > 0")
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params.append(json.dumps(item))
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return f" {connector} ".join(conditions), params
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if compare in self.SIMPLE_OP:
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if compare == "ne" and self._flag and is_json:
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return f"NOT (json({key}) = json(?))", [val]
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return f"{key} {self.SIMPLE_OP[compare]} ?", [val]
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elif compare in self.LIKE_OP:
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return f"{key} LIKE ?", [self.LIKE_OP[compare].format(val)]
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elif compare in ("contains", "any_contains"):
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if is_json:
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try:
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val = json.loads(val)
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except (json.JSONDecodeError, TypeError):
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pass
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if not isinstance(val, list):
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val = [val]
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if compare == "contains":
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return __contains_and_or(val, "AND")
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else:
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return __contains_and_or(val, "OR")
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elif compare in ("in", "not_in"):
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if is_json:
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try:
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val = json.loads(val)
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except (json.JSONDecodeError, TypeError):
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pass
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if not isinstance(val, (list, tuple, set)):
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raise HintException(f"{key}__{compare} expects a list/tuple/set")
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val = list(val)
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if len(val) == 0:
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return ("1=0" if compare == "in" else "1=1"), []
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placeholders = ", ".join(["?"] * len(val))
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op = "IN" if compare == "in" else "NOT IN"
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return f"{key} {op} ({placeholders})", val
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self._q_error(key, compare, val, sp_compare)
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return None, None
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def __compare_reducer(self, key: str, compare: str, road: list, val: Any):
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sp_compare = getattr(self._fields.get(key), "compare")
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compare = compare.lower()
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# 没路径, 正常拦截op
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# 有路径, 最终字段类型是不确定的, 查询结果不可控
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if not sp_compare or compare not in [c.lower() for c in sp_compare]:
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if road:
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self._q_error(f"{key}__{road}", compare, val, sp_compare)
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else:
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self._q_error(key, compare, val, sp_compare)
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is_json, val = self.__is_json(val)
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if not road:
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sql, params = self.__compare_operator(
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key=f"{self._tb}.{key}",
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compare=compare,
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val=val,
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is_json=is_json,
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sp_compare=sp_compare
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)
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return sql, params
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else:
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if self._flag:
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sql, params = self.__compare_operator(
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key=f"json_extract({self._tb}.{key}, '{self.__generate_road(road)}')",
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compare=compare,
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val=val,
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is_json=is_json,
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sp_compare=sp_compare
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)
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return sql, params
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|
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|
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|
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# 退化分支
|
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|
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if is_json:
|
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|
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try:
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val = json.loads(val)
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|
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except:
|
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pass
|
||
|
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pk_name = self._model_class.__primary_key__
|
||
|
|
q_fork = self._query.fork()
|
||
|
|
q_fork._SqliteEasy__OPT_LIMIT.clear()
|
||
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q_fork._SqliteEasy__OPT_ORDER.clear()
|
||
|
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q_fork._SqliteEasy__OPT_GROUP.clear()
|
||
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q_fork._SqliteEasy__OPT_HAVING.clear()
|
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|
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q_fork._SqliteEasy__OPT_FIELD.clear()
|
||
|
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q_fork.field(f"{self._tb}.{pk_name}", f"{self._tb}.{key}")
|
||
|
|
db_rows = q_fork.select()
|
||
|
|
matching_pks = []
|
||
|
|
for row_dict in db_rows:
|
||
|
|
field_json_str = row_dict.get(key)
|
||
|
|
if field_json_str is None:
|
||
|
|
continue
|
||
|
|
if isinstance(field_json_str, str):
|
||
|
|
try:
|
||
|
|
current_data = json.loads(field_json_str)
|
||
|
|
except (json.JSONDecodeError, TypeError):
|
||
|
|
continue
|
||
|
|
elif isinstance(field_json_str, (dict, list)):
|
||
|
|
current_data = field_json_str
|
||
|
|
else:
|
||
|
|
continue
|
||
|
|
|
||
|
|
target_val, path_found = self.__navigate_path(current_data, road)
|
||
|
|
if path_found:
|
||
|
|
if self._python_compare(target_val, compare, val):
|
||
|
|
pk_value = row_dict.get(pk_name)
|
||
|
|
if pk_value is not None:
|
||
|
|
matching_pks.append(pk_value)
|
||
|
|
|
||
|
|
if matching_pks:
|
||
|
|
placeholders = ",".join(["?"] * len(matching_pks))
|
||
|
|
return f"{self._tb}.{pk_name} IN ({placeholders})", matching_pks
|
||
|
|
else:
|
||
|
|
return "1=0", []
|
||
|
|
|
||
|
|
def __equal_reducer(self, key: str, road: list, val: Any):
|
||
|
|
is_json, val = self.__is_json(val)
|
||
|
|
if not road: # normal field
|
||
|
|
if val is not None:
|
||
|
|
if self._flag is True and is_json:
|
||
|
|
return f"json({self._tb}.{key}) = json(?)", [val]
|
||
|
|
return f"{self._tb}.{key} = ?", [val]
|
||
|
|
|
||
|
|
return f"{self._tb}.{key} IS NULL", []
|
||
|
|
if self._flag:
|
||
|
|
path = self.__generate_road(road)
|
||
|
|
if val is not None:
|
||
|
|
if is_json:
|
||
|
|
return f"json_extract({self._tb}.{key}, ?) = json(?)", [path, val]
|
||
|
|
return f"json_extract({self._tb}.{key}, ?) = ?", [path, val]
|
||
|
|
|
||
|
|
return f"json_extract({self._tb}.{key}, ?) IS NULL", [path]
|
||
|
|
|
||
|
|
# 退化分支
|
||
|
|
pk_name = self._model_class.__primary_key__
|
||
|
|
q_fork = self._query.fork()
|
||
|
|
q_fork._SqliteEasy__OPT_LIMIT.clear()
|
||
|
|
q_fork._SqliteEasy__OPT_ORDER.clear()
|
||
|
|
q_fork._SqliteEasy__OPT_GROUP.clear()
|
||
|
|
q_fork._SqliteEasy__OPT_HAVING.clear()
|
||
|
|
q_fork._SqliteEasy__OPT_FIELD.clear()
|
||
|
|
q_fork.field(f"{self._tb}.{pk_name}", f"{self._tb}.{key}")
|
||
|
|
db_rows = q_fork.select()
|
||
|
|
matching_pks = []
|
||
|
|
new_val = json.loads(val) if is_json else val
|
||
|
|
for row in db_rows:
|
||
|
|
field_value = row.get(key)
|
||
|
|
if field_value is None:
|
||
|
|
continue
|
||
|
|
try:
|
||
|
|
if isinstance(field_value, str):
|
||
|
|
try:
|
||
|
|
field_value = json.loads(field_value)
|
||
|
|
except (json.JSONDecodeError, TypeError):
|
||
|
|
continue
|
||
|
|
elif isinstance(field_value, (dict, list)):
|
||
|
|
field_value = field_value
|
||
|
|
else:
|
||
|
|
continue
|
||
|
|
target, path_found = self.__navigate_path(field_value, road)
|
||
|
|
if path_found and self._deep_equal(target, new_val):
|
||
|
|
pk_value = row.get(pk_name)
|
||
|
|
if pk_value is not None:
|
||
|
|
matching_pks.append(pk_value)
|
||
|
|
except:
|
||
|
|
continue
|
||
|
|
|
||
|
|
if matching_pks:
|
||
|
|
placeholders = ",".join(["?"] * len(matching_pks))
|
||
|
|
return f"{self._tb}.{pk_name} IN ({placeholders})", matching_pks
|
||
|
|
return "1=0", []
|
||
|
|
|
||
|
|
def __parse_condition(self, condition: Dict[str, Any]):
|
||
|
|
"""
|
||
|
|
解析 key, compare, road, val
|
||
|
|
field 字段
|
||
|
|
compare 运算符, None为=
|
||
|
|
road 路径
|
||
|
|
val 值
|
||
|
|
"""
|
||
|
|
for k, v in condition.items():
|
||
|
|
parts = k.split("__")
|
||
|
|
field = parts[0]
|
||
|
|
|
||
|
|
if not field or not self._fields.get(field):
|
||
|
|
raise HintException("%s's fields is not found: '%s'" % (self._model_class.__name__, k))
|
||
|
|
|
||
|
|
compare = None
|
||
|
|
roads = []
|
||
|
|
for part in parts[1:]:
|
||
|
|
if part in COMPARE:
|
||
|
|
compare = part
|
||
|
|
break
|
||
|
|
roads.append(part)
|
||
|
|
|
||
|
|
yield field, compare, roads, v
|
||
|
|
|
||
|
|
def reducer_process(self, condition: Dict[str, Any]) -> Generator[tuple[str, list[Any] | Any], Any, None]:
|
||
|
|
for key, compare, road, val in self.__parse_condition(condition):
|
||
|
|
if self._serializes and key in self._serializes:
|
||
|
|
val = self._serializes[key].serialized(value=val, forward=True)
|
||
|
|
|
||
|
|
if not compare:
|
||
|
|
sql, params = self.__equal_reducer(key=key, road=road, val=val)
|
||
|
|
else:
|
||
|
|
if val is None:
|
||
|
|
raise HintException("do not try to use 'None' value to compare.")
|
||
|
|
sql, params = self.__compare_reducer(key=key, compare=compare, road=road, val=val)
|
||
|
|
|
||
|
|
if sql:
|
||
|
|
yield sql, params
|
||
|
|
|
||
|
|
|
||
|
|
class Q:
|
||
|
|
"""
|
||
|
|
嵌套查询
|
||
|
|
AND优先级大于OR, 括号改变优先级
|
||
|
|
example: model.object.filter( Q(a=1) & (Q(b=2) | Q(c=3)) )
|
||
|
|
"""
|
||
|
|
AND = "AND"
|
||
|
|
OR = "OR"
|
||
|
|
|
||
|
|
def __init__(self, *args, _connector=None, **kwargs):
|
||
|
|
self.children: list = []
|
||
|
|
self._connector = _connector or self.AND
|
||
|
|
for arg in args:
|
||
|
|
if isinstance(arg, Q) and arg._connector == self._connector:
|
||
|
|
self.children.extend(arg.children)
|
||
|
|
elif isinstance(arg, (Q, dict)):
|
||
|
|
self.children.append(arg)
|
||
|
|
else:
|
||
|
|
raise HintException(f"unsupported operand type(s) for Q: '{type(arg)}'")
|
||
|
|
if kwargs:
|
||
|
|
self.children.append(kwargs)
|
||
|
|
|
||
|
|
def __and__(self, other):
|
||
|
|
if not isinstance(other, Q):
|
||
|
|
raise HintException(f"unsupported operand type(s) for &: 'Q' and '{type(other)}'")
|
||
|
|
return Q(self, other, _connector=Q.AND)
|
||
|
|
|
||
|
|
def __or__(self, other):
|
||
|
|
if not isinstance(other, Q):
|
||
|
|
raise HintException(f"unsupported operand type(s) for |: 'Q' and '{type(other)}'")
|
||
|
|
return Q(self, other, _connector=Q.OR)
|
||
|
|
|
||
|
|
def resolve(self, operator, query):
|
||
|
|
for child in self.children:
|
||
|
|
if isinstance(child, dict):
|
||
|
|
for s, p in operator.reducer_process(child):
|
||
|
|
if s:
|
||
|
|
query.where(s, p)
|
||
|
|
elif isinstance(child, Q):
|
||
|
|
if child._connector == self._connector:
|
||
|
|
child.resolve(operator, query)
|
||
|
|
else:
|
||
|
|
with query.where_nest(logic=self._connector) as n:
|
||
|
|
child.resolve(operator, n)
|
||
|
|
else:
|
||
|
|
raise HintException(f"Invalid child type: {type(child)}")
|
||
|
|
|
||
|
|
|
||
|
|
class QuerySet(Generic[M]):
|
||
|
|
"""
|
||
|
|
查询集
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(self, model_class: Type[M], query: "Db.query"):
|
||
|
|
self._model_class: Type[M] = model_class
|
||
|
|
self._tb = self._model_class.__table_name__
|
||
|
|
self._query = query
|
||
|
|
self._cache = None
|
||
|
|
self._field_filter = None
|
||
|
|
|
||
|
|
def __len__(self):
|
||
|
|
if self._cache:
|
||
|
|
return len(self._cache)
|
||
|
|
raise RuntimeError("QuerySet is not executed, use count() instead")
|
||
|
|
|
||
|
|
def __bool__(self):
|
||
|
|
if self._cache is not None:
|
||
|
|
return bool(self._cache)
|
||
|
|
return self.exists()
|
||
|
|
|
||
|
|
def __iter__(self) -> Generator[M, None, None]:
|
||
|
|
yield from self.__execute()
|
||
|
|
|
||
|
|
def __getitem__(self, index: Optional[int | slice]) -> Optional[M | List[M]]:
|
||
|
|
"""
|
||
|
|
查询结果切片
|
||
|
|
"""
|
||
|
|
if isinstance(index, int):
|
||
|
|
if index < 0:
|
||
|
|
raise HintException("index is not supported")
|
||
|
|
if self._cache is not None:
|
||
|
|
try:
|
||
|
|
return self._cache[index]
|
||
|
|
except IndexError:
|
||
|
|
raise HintException("list index out of range")
|
||
|
|
else:
|
||
|
|
new_q = self._clone_q.limit(1).skip(index)
|
||
|
|
temp = new_q.find()
|
||
|
|
return self._gen_M(temp) if temp else None
|
||
|
|
elif isinstance(index, slice):
|
||
|
|
start = index.start or 0
|
||
|
|
if start < 0:
|
||
|
|
raise HintException("start index is not supported")
|
||
|
|
if index.stop is None:
|
||
|
|
# not stop, get all
|
||
|
|
self.__execute()
|
||
|
|
return self._cache[start: index.stop]
|
||
|
|
limit = max(0, index.stop - start)
|
||
|
|
q = self._clone_q.skip(start).limit(limit)
|
||
|
|
return [
|
||
|
|
self._gen_M(r) for r in q.select() or []
|
||
|
|
]
|
||
|
|
return None
|
||
|
|
|
||
|
|
def __add__(self, other: "QuerySet") -> Iterable:
|
||
|
|
"""
|
||
|
|
合并两个querset
|
||
|
|
:return: 生成器
|
||
|
|
"""
|
||
|
|
if not isinstance(other, QuerySet):
|
||
|
|
raise HintException(f"nou support: 'QuerySet' and '{type(other)}'")
|
||
|
|
|
||
|
|
if self._model_class != other._model_class:
|
||
|
|
raise HintException("not the same model class cant be merged")
|
||
|
|
return chain(self.__execute() or [], other.__execute() or [])
|
||
|
|
|
||
|
|
@property
|
||
|
|
def _clone_q(self) -> "Db.query":
|
||
|
|
return self._query.fork()
|
||
|
|
|
||
|
|
def _gen_M(self, data) -> M:
|
||
|
|
return self._model_class(
|
||
|
|
_field_filter=self._field_filter,
|
||
|
|
**self._model_class._serialized_data(data, self._field_filter)
|
||
|
|
)
|
||
|
|
|
||
|
|
def __execute(self) -> Optional[List[M]]:
|
||
|
|
if self._cache is None:
|
||
|
|
try:
|
||
|
|
if len(self._query._SqliteEasy__OPT_FIELD._Field__FIELDS) == 0:
|
||
|
|
self._query.field(f"`{self._tb}`.*")
|
||
|
|
|
||
|
|
self._cache = [
|
||
|
|
self._gen_M(i) for i in self._query.select() or []
|
||
|
|
]
|
||
|
|
except Exception as e:
|
||
|
|
print("db query error => %s" % str(e))
|
||
|
|
raise HintException(e)
|
||
|
|
return self._cache
|
||
|
|
|
||
|
|
def filter(self, *args, **kwargs) -> "QuerySet[M]":
|
||
|
|
"""
|
||
|
|
过滤
|
||
|
|
:return: QuerySet
|
||
|
|
"""
|
||
|
|
operator = Operator(model_class=self._model_class, query=self._query)
|
||
|
|
# args
|
||
|
|
for i in args:
|
||
|
|
if isinstance(i, Q):
|
||
|
|
i.resolve(operator, self._query)
|
||
|
|
elif isinstance(i, dict):
|
||
|
|
for s, p in operator.reducer_process(i):
|
||
|
|
if s:
|
||
|
|
self._query.where(s, p)
|
||
|
|
else:
|
||
|
|
raise HintException(f"Invalid filter argument: {type(i)}")
|
||
|
|
# kwargs
|
||
|
|
for s, p in operator.reducer_process(kwargs):
|
||
|
|
if s:
|
||
|
|
self._query.where(s, p)
|
||
|
|
return self
|
||
|
|
|
||
|
|
def limit(self, num: int) -> "QuerySet[M]":
|
||
|
|
"""
|
||
|
|
限制
|
||
|
|
:return: QuerySet
|
||
|
|
"""
|
||
|
|
self._query.limit(num)
|
||
|
|
return self
|
||
|
|
|
||
|
|
def offset(self, num: int) -> "QuerySet[M]":
|
||
|
|
"""
|
||
|
|
偏移量
|
||
|
|
:return: QuerySet
|
||
|
|
"""
|
||
|
|
self._query.skip(num)
|
||
|
|
return self
|
||
|
|
|
||
|
|
def distinct(self) -> "QuerySet[M]":
|
||
|
|
"""
|
||
|
|
以指定字段去重
|
||
|
|
"""
|
||
|
|
# todo
|
||
|
|
return self
|
||
|
|
|
||
|
|
def order_by(self, *args) -> "QuerySet[M]":
|
||
|
|
"""
|
||
|
|
排序
|
||
|
|
:param args: "filed" ASC "-filed" DESC
|
||
|
|
:return: QuerySet
|
||
|
|
"""
|
||
|
|
reduce(
|
||
|
|
lambda q, c: q.order(f"{self._tb}.{c[1:]}", "DESC") if c[:1] == "-"
|
||
|
|
else q.order(f"{self._tb}.{c}"), args, self._query
|
||
|
|
)
|
||
|
|
return self
|
||
|
|
|
||
|
|
def values(self, *args) -> "QuerySet[M]":
|
||
|
|
# todo
|
||
|
|
raise NotImplementedError("values")
|
||
|
|
|
||
|
|
def fields(self, *args) -> "QuerySet[M]":
|
||
|
|
if not args:
|
||
|
|
return self
|
||
|
|
field_set = set(args)
|
||
|
|
# make suer pk
|
||
|
|
pk = self._model_class.__primary_key__
|
||
|
|
if pk not in field_set:
|
||
|
|
field_set.add(pk)
|
||
|
|
field_set = [f for f in field_set if f in self._model_class._get_fields()]
|
||
|
|
self._field_filter = field_set # model level
|
||
|
|
self._query.field(*(f"{self._tb}.{f}" for f in field_set)) # db level
|
||
|
|
return self
|
||
|
|
|
||
|
|
def first(self) -> "Optional[M]":
|
||
|
|
"""
|
||
|
|
获取第一条数据
|
||
|
|
:return: QuerySet
|
||
|
|
"""
|
||
|
|
if self._cache is None:
|
||
|
|
if len(self._query._SqliteEasy__OPT_FIELD._Field__FIELDS) == 0:
|
||
|
|
self._query.field(f"`{self._tb}`.*")
|
||
|
|
data = self._query.find()
|
||
|
|
if not data:
|
||
|
|
return None
|
||
|
|
return self._gen_M(data)
|
||
|
|
else:
|
||
|
|
return self._cache[0] if len(self._cache) != 0 else None
|
||
|
|
|
||
|
|
def get_field(self, key_name: str) -> Optional[Any]:
|
||
|
|
"""
|
||
|
|
获取第一条数据的指定字段的值
|
||
|
|
:param key_name: 字段名
|
||
|
|
:return: Any
|
||
|
|
"""
|
||
|
|
f = self.first()
|
||
|
|
return f.as_dict().get(key_name) if f else None
|
||
|
|
|
||
|
|
def update(self, *args, **kwargs) -> int:
|
||
|
|
"""
|
||
|
|
更新数据
|
||
|
|
:return: int
|
||
|
|
"""
|
||
|
|
self._cache = None
|
||
|
|
if args and kwargs:
|
||
|
|
raise HintException("args and kwargs can not be used at the same time")
|
||
|
|
if args:
|
||
|
|
if len(args) != 1:
|
||
|
|
raise HintException("%s too many args" % (args,))
|
||
|
|
elif not isinstance(args[0], dict):
|
||
|
|
raise HintException("%s must be a dict" % (args[0],))
|
||
|
|
target = args[0]
|
||
|
|
elif kwargs:
|
||
|
|
target = kwargs
|
||
|
|
else:
|
||
|
|
target = None
|
||
|
|
if not target:
|
||
|
|
return 0
|
||
|
|
try:
|
||
|
|
if "update_time" not in target:
|
||
|
|
fields = getattr(self._model_class, "__fields__", {}) or {}
|
||
|
|
auto_now = None
|
||
|
|
for name, f in fields.items():
|
||
|
|
if name == "update_time" and getattr(f, "auto_now", False) is True:
|
||
|
|
auto_now = name
|
||
|
|
break
|
||
|
|
if auto_now:
|
||
|
|
import time
|
||
|
|
from public.aaModel.fields import ACCURACY
|
||
|
|
target[auto_now] = round(time.time() * ACCURACY)
|
||
|
|
except:
|
||
|
|
pass
|
||
|
|
serlz = self._model_class._get_serialized()
|
||
|
|
body = {
|
||
|
|
k: (serlz[k].serialized(v, True) if k in serlz else v) for k, v in target.items()
|
||
|
|
}
|
||
|
|
return self._query.update(body)
|
||
|
|
|
||
|
|
def delete(self) -> int:
|
||
|
|
"""
|
||
|
|
删除数据
|
||
|
|
:return: int
|
||
|
|
"""
|
||
|
|
self._cache = None
|
||
|
|
count = self._query.delete()
|
||
|
|
return count
|
||
|
|
|
||
|
|
def exists(self) -> bool:
|
||
|
|
"""
|
||
|
|
存在数据
|
||
|
|
:return: bool
|
||
|
|
"""
|
||
|
|
q_fk = self._clone_q
|
||
|
|
q_fk.field(self._model_class.__primary_key__)
|
||
|
|
q_fk.limit(1)
|
||
|
|
return bool(q_fk.find())
|
||
|
|
|
||
|
|
def count(self) -> int:
|
||
|
|
"""
|
||
|
|
获取数量
|
||
|
|
:return: int
|
||
|
|
"""
|
||
|
|
if self._cache is not None:
|
||
|
|
return len(self._cache)
|
||
|
|
q = self._clone_q
|
||
|
|
q._SqliteEasy__OPT_LIMIT.clear()
|
||
|
|
q._SqliteEasy__OPT_ORDER.clear()
|
||
|
|
q._SqliteEasy__OPT_GROUP.clear()
|
||
|
|
q._SqliteEasy__OPT_HAVING.clear()
|
||
|
|
return q.count()
|
||
|
|
|
||
|
|
def as_list(self) -> list:
|
||
|
|
"""
|
||
|
|
转列表
|
||
|
|
:return: list
|
||
|
|
"""
|
||
|
|
if self._cache is None:
|
||
|
|
self.__execute()
|
||
|
|
return [x.as_dict() for x in self._cache]
|
||
|
|
|
||
|
|
|
||
|
|
class aaObjects(Generic[M]):
|
||
|
|
"""
|
||
|
|
管理器
|
||
|
|
"""
|
||
|
|
_queryset_class = QuerySet
|
||
|
|
__m_map__ = {
|
||
|
|
"default": set(), # 默认使用default.db, default = 表集合
|
||
|
|
"db": dict() # 指定了db_file的只放在db路径下, db = {db_file: 表集合}
|
||
|
|
}
|
||
|
|
|
||
|
|
def __new__(cls, args):
|
||
|
|
if hasattr(args, "__table_name__"):
|
||
|
|
if args.__db_name__ == "default":
|
||
|
|
if args.__table_name__ not in cls.__m_map__["default"]:
|
||
|
|
cls.__m_map__["default"].add(aaMigrate(args).run_migrate())
|
||
|
|
else:
|
||
|
|
if args.__db_name__ not in cls.__m_map__["db"]:
|
||
|
|
cls.__m_map__["db"][args.__db_name__] = set()
|
||
|
|
cls.__m_map__["db"][args.__db_name__].add(aaMigrate(args).run_migrate())
|
||
|
|
return super(aaObjects, cls).__new__(cls)
|
||
|
|
|
||
|
|
def __init__(self, model: Type[M]):
|
||
|
|
self._model = model
|
||
|
|
self.__q = None
|
||
|
|
|
||
|
|
# @classmethod
|
||
|
|
# def _as_manager(cls):
|
||
|
|
# """自定义管理器"""
|
||
|
|
# return aaManager(obj_cls=cls)
|
||
|
|
|
||
|
|
def _get_queryset(self) -> "QuerySet[M]":
|
||
|
|
"""获取管理器关联的QuerySet"""
|
||
|
|
return self._queryset_class(self._model, self._query.fork())
|
||
|
|
|
||
|
|
@property
|
||
|
|
def _query(self) -> "Db.query":
|
||
|
|
if not self.__q:
|
||
|
|
q = db_file_connect(self._model.__db_name__).query()
|
||
|
|
self.__q = q.table(self._model.__table_name__)
|
||
|
|
return self.__q
|
||
|
|
|
||
|
|
def _insert(self, val_data) -> int:
|
||
|
|
return self._query.insert(val_data)
|
||
|
|
|
||
|
|
def _update(self, cdt: dict, val_data: dict) -> int:
|
||
|
|
if not cdt or not val_data:
|
||
|
|
return 0
|
||
|
|
|
||
|
|
q = self._query.fork()
|
||
|
|
conditions = []
|
||
|
|
params = []
|
||
|
|
for k, v in cdt.items():
|
||
|
|
conditions.append(f"`{k}` = ?")
|
||
|
|
params.append(v)
|
||
|
|
|
||
|
|
q.where(" AND ".join(conditions), params)
|
||
|
|
return q.update(val_data)
|
||
|
|
|
||
|
|
def insert(self, data: Dict[str, Any], raise_exp: bool = True) -> dict:
|
||
|
|
"""
|
||
|
|
插入单条数据
|
||
|
|
:data dict
|
||
|
|
:raise_exp bool 抛字段类型检查异常
|
||
|
|
:return 插入的数据
|
||
|
|
"""
|
||
|
|
model_obj = self._model(**data)
|
||
|
|
insert_res = self._insert(
|
||
|
|
model_obj._validate(raise_exp=raise_exp)
|
||
|
|
)
|
||
|
|
if insert_res:
|
||
|
|
return {
|
||
|
|
self._model.__primary_key__: insert_res, **model_obj.as_dict()
|
||
|
|
}
|
||
|
|
else:
|
||
|
|
if raise_exp:
|
||
|
|
raise HintException(insert_res)
|
||
|
|
else:
|
||
|
|
return {}
|
||
|
|
|
||
|
|
def insert_many(self, data: List[Dict[str, Any]], raise_exp: bool = True) -> int:
|
||
|
|
"""
|
||
|
|
批量插入数据
|
||
|
|
:data list
|
||
|
|
:raise_exp bool 不抛异常则跳过异常继续插入
|
||
|
|
:return: int 影响行数
|
||
|
|
"""
|
||
|
|
valid_list = []
|
||
|
|
for i in data:
|
||
|
|
if i and isinstance(i, dict):
|
||
|
|
temp = self._model(**i)._validate(raise_exp=raise_exp)
|
||
|
|
if temp:
|
||
|
|
valid_list.append(temp)
|
||
|
|
if not valid_list:
|
||
|
|
return 0
|
||
|
|
return self._query.insert_all(valid_list)
|
||
|
|
|
||
|
|
def find_one(self, **kwargs) -> Optional[M]:
|
||
|
|
"""
|
||
|
|
过滤查询一行数据
|
||
|
|
:kwargs dict
|
||
|
|
:return: QuerySet | None
|
||
|
|
"""
|
||
|
|
return self._get_queryset().filter(**kwargs).first()
|
||
|
|
|
||
|
|
def filter(self, *args, **kwargs) -> "QuerySet[M]":
|
||
|
|
"""
|
||
|
|
过滤
|
||
|
|
:kwargs dict
|
||
|
|
:return: QuerySet
|
||
|
|
"""
|
||
|
|
return self._get_queryset().filter(*args, **kwargs)
|
||
|
|
|
||
|
|
def all(self) -> "QuerySet[M]":
|
||
|
|
"""
|
||
|
|
所有数据
|
||
|
|
return: QuerySet
|
||
|
|
"""
|
||
|
|
return self._get_queryset()
|
||
|
|
|
||
|
|
|
||
|
|
class aaMigrate:
|
||
|
|
"""
|
||
|
|
同步表字段
|
||
|
|
"""
|
||
|
|
NULL_MAP = {False: "NOT NULL", True: "NULL"}
|
||
|
|
|
||
|
|
def __init__(self, model: M):
|
||
|
|
self.__model = model
|
||
|
|
self.__table = self.__model.__table_name__
|
||
|
|
self.__fields = self.__model._get_fields()
|
||
|
|
self.__client = None
|
||
|
|
self.__query = None
|
||
|
|
|
||
|
|
def run_migrate(self) -> str | None:
|
||
|
|
"""
|
||
|
|
迁移
|
||
|
|
"""
|
||
|
|
if not self.__model:
|
||
|
|
raise PanelError("Model is None")
|
||
|
|
if not hasattr(self.__model, '__db_name__'):
|
||
|
|
raise PanelError(f"{self.__model.__class__.__name__} need 'db_name'")
|
||
|
|
if not hasattr(self.__model, '__table_name__'):
|
||
|
|
raise PanelError(f"{self.__model.__class__.__name__} need 'table_name'")
|
||
|
|
if not hasattr(self.__model, '__fields__'):
|
||
|
|
raise PanelError(f"{self.__model.__class__.__name__} need 'fields'")
|
||
|
|
|
||
|
|
try:
|
||
|
|
self.__client: Db = db_file_connect(self.__model.__db_name__)
|
||
|
|
self.__table_exists()
|
||
|
|
self.__index_exists()
|
||
|
|
except Exception as e:
|
||
|
|
raise PanelError(e)
|
||
|
|
finally:
|
||
|
|
if self.__query:
|
||
|
|
self.__query.close()
|
||
|
|
if self.__client:
|
||
|
|
self.__client.close()
|
||
|
|
return self.__model.__table_name__
|
||
|
|
|
||
|
|
def __new_tb_transform_sql(self, tb_name: str) -> str:
|
||
|
|
"""
|
||
|
|
转sql
|
||
|
|
"""
|
||
|
|
field_sql = ""
|
||
|
|
pk_flag = 0
|
||
|
|
for key, val in self.__fields.items():
|
||
|
|
if key == "index":
|
||
|
|
raise PanelError("'%s' is a reserved word in SQL. do not use it" % key)
|
||
|
|
if val.primary_key is False:
|
||
|
|
field_sql += f"`{key}` {val.field_type} {self.NULL_MAP.get(val.null)} {val.default_val_sql}, "
|
||
|
|
else: # is primary_key
|
||
|
|
pk_flag += 1
|
||
|
|
if val.field_type != "INTEGER":
|
||
|
|
raise PanelError("'primary_key' only support IntegerField now")
|
||
|
|
field_sql += f"`{key}` {val.field_type} PRIMARY KEY AUTOINCREMENT, "
|
||
|
|
if not field_sql:
|
||
|
|
return ""
|
||
|
|
if pk_flag != 1:
|
||
|
|
raise PanelError("primary_key not found, and must be only one")
|
||
|
|
field_sql = field_sql.rstrip(", ")
|
||
|
|
sql = f"""CREATE TABLE IF NOT EXISTS `{tb_name}` ({field_sql});"""
|
||
|
|
return sql
|
||
|
|
|
||
|
|
def __fields_exist(self, add_fields_map: dict = None, del_fields: set = None, set_db: set = None) -> None:
|
||
|
|
"""
|
||
|
|
字段处理
|
||
|
|
"""
|
||
|
|
if not del_fields:
|
||
|
|
for k, v in add_fields_map.items():
|
||
|
|
add_sql = (f"ALTER TABLE `{self.__table}` "
|
||
|
|
f"ADD COLUMN `{k}` {v.field_type} {v.default_val_sql} {self.NULL_MAP.get(v.null)};")
|
||
|
|
self.__query.execute(add_sql)
|
||
|
|
else:
|
||
|
|
if set_db:
|
||
|
|
temp_tb = f"table_{uuid.uuid4().hex}"
|
||
|
|
new = self.__new_tb_transform_sql(temp_tb)
|
||
|
|
if new:
|
||
|
|
try:
|
||
|
|
self.__query.autocommit(autocommit=False)
|
||
|
|
self.__query.execute("BEGIN;")
|
||
|
|
self.__query.execute(new)
|
||
|
|
# rename fields will be loss old data now
|
||
|
|
format_keys = ", ".join(
|
||
|
|
[f"`{k}`" for k in set_db if k not in del_fields]
|
||
|
|
)
|
||
|
|
copy_sql = (f"INSERT INTO `{temp_tb}` ({format_keys}) "
|
||
|
|
f"SELECT {format_keys} FROM `{self.__table}`;")
|
||
|
|
self.__query.execute(copy_sql)
|
||
|
|
self.__query.execute(f"DROP TABLE IF EXISTS `{self.__table}`;")
|
||
|
|
self.__query.execute(f"ALTER TABLE `{temp_tb}` RENAME TO `{self.__table}`;")
|
||
|
|
self.__query.commit()
|
||
|
|
except Exception as e:
|
||
|
|
import traceback
|
||
|
|
print(traceback.format_exc())
|
||
|
|
self.__query.rollback()
|
||
|
|
raise e
|
||
|
|
|
||
|
|
def __table_exists(self) -> None:
|
||
|
|
"""
|
||
|
|
表迁移
|
||
|
|
"""
|
||
|
|
self.__query = self.__client.query().table("sqlite_master")
|
||
|
|
if self.__query.where("type=? AND name=?", ("table", self.__table)).count() != 1:
|
||
|
|
sql = self.__new_tb_transform_sql(self.__table)
|
||
|
|
if sql:
|
||
|
|
self.__query.execute(sql)
|
||
|
|
else: # has table
|
||
|
|
self.__query.table(self.__table)
|
||
|
|
set_cur = set(self.__fields.keys())
|
||
|
|
set_db = set(self.__query.get_columns())
|
||
|
|
add_fields = set_cur - set_db
|
||
|
|
del_fields = set_db - set_cur
|
||
|
|
add_fields_map = {k: v for k, v in self.__fields.items() if k in add_fields}
|
||
|
|
self.__fields_exist(add_fields_map, del_fields, set_db)
|
||
|
|
|
||
|
|
def __trans_index_key(self, index_info: tuple | str) -> str:
|
||
|
|
def __if_raise_error(item: str):
|
||
|
|
if not self.__model._get_fields().get(item):
|
||
|
|
raise PanelError(f"create index error, '{item}' is not in model's fields")
|
||
|
|
|
||
|
|
col_sql = ""
|
||
|
|
if isinstance(index_info, tuple):
|
||
|
|
for item in index_info:
|
||
|
|
__if_raise_error(item)
|
||
|
|
col_sql += f"`{item}`,"
|
||
|
|
elif isinstance(index_info, str):
|
||
|
|
__if_raise_error(index_info)
|
||
|
|
col_sql = f"`{index_info}`"
|
||
|
|
else:
|
||
|
|
raise PanelError("model's index error, should be like ['key1', ('key2', 'key3')]")
|
||
|
|
return col_sql.rstrip(",")
|
||
|
|
|
||
|
|
def __index_exists(self) -> bool | None:
|
||
|
|
"""
|
||
|
|
索引
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
if not hasattr(self.__model, "__index_keys__"):
|
||
|
|
return True
|
||
|
|
self.__query.table(self.__table)
|
||
|
|
cur = self.__query.query(f"PRAGMA index_list(`{self.__table}`);") or []
|
||
|
|
current_index = [
|
||
|
|
x.get("name") for x in cur if str(x.get("origin", "c")).lower() == "c"
|
||
|
|
] if cur else []
|
||
|
|
sql_statements = []
|
||
|
|
wanted = set()
|
||
|
|
for index_info in self.__model.__index_keys__:
|
||
|
|
"""
|
||
|
|
todo
|
||
|
|
index_info 对应字段
|
||
|
|
字段类型不为json: 普通索引
|
||
|
|
如果为list: 分表, 索引, CURD触发, 存在性同步.
|
||
|
|
如果为dict: 路径虚拟列索引
|
||
|
|
复合索引 index_info tuple
|
||
|
|
如果移除索引, 检查上述步骤
|
||
|
|
"""
|
||
|
|
col_sql = self.__trans_index_key(index_info)
|
||
|
|
cols = [col.strip("` ") for col in col_sql.split(",")]
|
||
|
|
index_name = f"idx_{self.__table}_{'_'.join(cols)}"
|
||
|
|
wanted.add(index_name)
|
||
|
|
if index_name not in current_index:
|
||
|
|
sql_statements.append(
|
||
|
|
f"CREATE INDEX IF NOT EXISTS `{index_name}` ON `{self.__table}` ({col_sql}); "
|
||
|
|
)
|
||
|
|
|
||
|
|
for index in current_index:
|
||
|
|
if index not in wanted:
|
||
|
|
sql_statements.append(f"DROP INDEX IF EXISTS `{index}`;")
|
||
|
|
|
||
|
|
if sql_statements:
|
||
|
|
self.__query.execute_script(
|
||
|
|
" ".join(sql_statements)
|
||
|
|
)
|
||
|
|
return True
|
||
|
|
except:
|
||
|
|
pass
|
||
|
|
|
||
|
|
|
||
|
|
class aaManager:
|
||
|
|
def __init__(self, obj_cls=aaObjects, qs_cls=QuerySet):
|
||
|
|
self._objects_class = obj_cls
|
||
|
|
self._queryset_class = qs_cls
|
||
|
|
self._cache = {}
|
||
|
|
|
||
|
|
def __get__(self, instance, cls: Type[M]):
|
||
|
|
if instance is not None:
|
||
|
|
raise AttributeError(
|
||
|
|
f"object manager can't accessible from '{cls.__name__}' instances"
|
||
|
|
)
|
||
|
|
try:
|
||
|
|
manager = self._cache.get(cls)
|
||
|
|
if manager is None:
|
||
|
|
manager = self._objects_class(cls)
|
||
|
|
setattr(manager, "_queryset_class", self._queryset_class)
|
||
|
|
self._cache[cls] = manager
|
||
|
|
return manager
|
||
|
|
except Exception:
|
||
|
|
import traceback
|
||
|
|
raise PanelError(traceback.format_exc())
|