Changed name sqlify to datalite
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@@ -1,10 +1,11 @@
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from os.path import exists
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from pathlib import Path
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import sqlite3 as sql
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from dataclasses import Field, asdict, dataclass
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from typing import List, Dict, Optional, Callable, Any
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def _convert_type(type_: Optional[type], type_overload: Dict[Optional[type], str]) -> str:
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"""
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Given a Python type, return the str name of its
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@@ -12,6 +13,8 @@ def _convert_type(type_: Optional[type], type_overload: Dict[Optional[type], str
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:param type_: A Python type, or None.
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:param type_overload: A type table to overload the custom type table.
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:return: The str name of the sql type.
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>>> _convert_type(int)
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"INTEGER"
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"""
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try:
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return type_overload[type_]
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@@ -77,7 +80,6 @@ def _create_entry(self) -> None:
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Given an object, create the entry for the object. As a side-effect,
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this will set the object_id attribute of the object to the unique
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id of the entry.
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:param cur: Cursor of the database.
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:param self: Instance of the object.
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:return: None.
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"""
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@@ -93,8 +95,20 @@ def _create_entry(self) -> None:
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con.commit()
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def sqlify(db_path: str, type_overload: Optional[Dict[Optional[type], str]] = None,
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*args, **kwargs) -> Callable:
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def _remove_entry(self) -> None:
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"""
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Remove the object's record in the underlying database.
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:param self: self instance.
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:return: None.
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"""
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with sql.connect(getattr(self, "db_path")) as con:
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cur: sql.Cursor = con.cursor()
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cur.execute(f"DELETE FROM {self.__class__.__name__.lower()} WHERE obj_id = {self.obj_id}")
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con.commit()
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def datalite(db_path: str, type_overload: Optional[Dict[Optional[type], str]] = None,
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*args, **kwargs) -> Callable:
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def decorator(dataclass_: type, *args_i, **kwargs_i):
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type_table: Dict[Optional[type], str] = {None: "NULL", int: "INTEGER", float: "REAL",
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str: "TEXT", bytes: "BLOB"}
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@@ -109,6 +123,7 @@ def sqlify(db_path: str, type_overload: Optional[Dict[Optional[type], str]] = No
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return decorator
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def is_fetchable(class_: type, obj_id: int) -> bool:
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"""
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Check if a record is fetchable given its obj_id and
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