DAL/studentDAL.py

@@ -1,288 +0,0 @@
-from test import Student
-import os.path
-from abc import ABC, abstractmethod
-from datetime import date, datetime
-from typing import List, Dict, Optional
-import json
-import csv
-
-class IStudentDAL(ABC):
-
-    @abstractmethod
-    def get_by_id(self, id: str) -> Optional[Student]:
-        pass
-
-    @abstractmethod
-    def get_by_stu_id(self, stu_id: str) -> Optional[Student]:
-        pass
-
-    @abstractmethod
-    def get_all(self) -> List[Student]:
-        pass
-
-    @abstractmethod
-    def add(self, student: Student) -> bool:
-        pass
-
-    @abstractmethod
-    def delete(self, id: str) -> bool:
-        pass
-
-    @abstractmethod
-    def delete_by_stu_id(self, stu_id: str) -> bool:
-        pass
-
-    @abstractmethod
-    def update(self, student: Student) -> bool:
-        pass
-
-    @abstractmethod
-    def is_exist(self, id: str) -> bool:
-        pass
-
-    @abstractmethod
-    def is_exist_stu_id(self, stu_id: str) -> bool:
-        pass
-
-    @abstractmethod
-    def import_from_json(self, file_path: str) -> List[Dict]:
-        pass
-
-    @abstractmethod
-    def export_to_json(self, file_path: str) -> bool:
-        pass
-
-    @abstractmethod
-    def import_from_csv(self, file_path: str) -> List[Dict]:
-        pass
-
-    @abstractmethod
-    def export_to_csv(self, file_path: str) -> bool:
-        pass
-
-class JsonStudentDAL(IStudentDAL):
-
-    def __init__(self, file_path: str):
-        self.file_path = file_path
-        self._ensure_file_exists()
-
-    def _ensure_file_exists(self):
-        if not os.path.exists(self.file_path):
-            with open(self.file_path, 'w', encoding='utf-8') as f:
-                json.dump([], f, ensure_ascii=False)
-
-    def _load(self) -> List[Dict]:
-        with open(self.file_path, 'r', encoding='utf-8') as f:
-            return json.load(f)
-
-    def _save(self, data: List[Dict]):
-        with open(self.file_path, 'w', encoding='utf-8') as f:
-            json.dump(data, f, ensure_ascii=False, indent=2)
-
-    def get_by_id(self, id: str) -> Optional[Student]:
-        data = self._load()
-        for item in data:
-            if item['id'] == id:
-                return Student.from_dict(item)
-        return None
-
-    def get_by_stu_id(self, stu_id: str) -> Optional[Student]:
-        data = self._load()
-        for item in data:
-            if item['stu_id'] == stu_id:
-                return Student.from_dict(item)
-        return None
-
-    def get_all(self) -> List[Student]:
-        return [Student.from_dict(item) for item in self._load()]
-
-    def add(self, student: Student) -> bool:
-        data = self._load()
-        if self.is_exist(student.id):
-            return False
-
-        data.append(student.to_dict())
-        self._save(data)
-        return True
-
-    def delete(self, id: str) -> bool:
-        data = self._load()
-        new_data = [item for item in data if item['id'] != id]
-        if len(data) == len(new_data):
-            return False
-
-        self._save(new_data)
-        return True
-
-    def delete_by_stu_id(self, stu_id: str) -> bool:
-        data = self._load()
-        new_data = [item for item in data if item['stu_id'] != stu_id]
-        if len(data) == len(new_data):
-            return False
-
-        self._save(new_data)
-        return True
-
-    def update(self, student: Student) -> bool:
-        data = self._load()
-        updated = False
-
-        for i, item in enumerate(data):
-            if item['id'] == student.id:
-                data[i] = student.to_dict()
-                updated = True
-                break
-
-        if updated:
-            self._save(data)
-        return updated
-
-    def is_exist(self, id: str) -> bool:
-        return any(item['id'] == id for item in self._load())
-
-    def is_exist_stu_id(self, stu_id: str) -> bool:
-        return any(item['stu_id'] == stu_id for item in self._load())
-
-    def import_from_json(self, file_path: str) -> List[Dict]:
-        with open(file_path, 'r', encoding='utf-8') as f:
-            return json.load(f)
-
-    def export_to_json(self, file_path: str) -> bool:
-        try:
-            with open(file_path, 'w', encoding='utf-8') as f:
-                json.dump(self._load(), f, ensure_ascii=False, indent=2)
-            return True
-        except:
-            return False
-
-class CsvStudentDAL(IStudentDAL):
-    """CSV格式数据访问实现类"""
-
-    FIELD_TYPES = {
-        'id': str,
-        'stu_id': str,
-        'name': str,
-        'age': int,
-        'gender': str,
-        'height': float,
-        'weight': float
-    }
-
-    def __init__(self, file_path: str):
-        self.file_path = file_path
-        self._ensure_file_exists()
-
-    def _ensure_file_exists(self):
-        """确保CSV文件存在并包含表头"""
-        if not os.path.exists(self.file_path):
-            with open(self.file_path, 'w', encoding='utf-8-sig', newline='') as f:
-                writer = csv.DictWriter(f, fieldnames=self.FIELD_TYPES.keys())
-                writer.writeheader()
-
-    def _convert_row(self, row: Dict) -> Dict:
-        """转换CSV行的数据类型"""
-        converted = {}
-        for field, dtype in self.FIELD_TYPES.items():
-            value = row.get(field)
-            if value is None or value == '':
-                converted[field] = None
-            else:
-                try:
-                    converted[field] = dtype(value)
-                except (ValueError, TypeError):
-                    converted[field] = None
-        return converted
-
-    def _load(self) -> List[Dict]:
-        """从CSV文件加载数据"""
-        with open(self.file_path, 'r', encoding='utf-8-sig') as f:
-            reader = csv.DictReader(f)
-            return [self._convert_row(row) for row in reader]
-
-    def _save(self, data: List[Dict]):
-        """保存数据到CSV文件"""
-        with open(self.file_path, 'w', encoding='utf-8-sig', newline='') as f:
-            writer = csv.DictWriter(f, fieldnames=self.FIELD_TYPES.keys())
-            writer.writeheader()
-            writer.writerows(data)
-
-    def get_by_id(self, id: str) -> Optional[Student]:
-        data = self._load()
-        for item in data:
-            if item['id'] == id:
-                return Student.from_dict(item)
-        return None
-
-    def get_by_stu_id(self, stu_id: str) -> Optional[Student]:
-        data = self._load()
-        for item in data:
-            if item['stu_id'] == stu_id:
-                return Student.from_dict(item)
-        return None
-
-    def get_all(self) -> List[Student]:
-        return [Student.from_dict(item) for item in self._load()]
-
-    def add(self, student: Student) -> bool:
-        data = self._load()
-        if self.is_exist(student.id):
-            return False
-
-        data.append(student.to_dict())
-        self._save(data)
-        return True
-
-    def delete(self, id: str) -> bool:
-        data = self._load()
-        new_data = [item for item in data if item['id'] != id]
-        if len(data) == len(new_data):
-            return False
-
-        self._save(new_data)
-        return True
-
-    def delete_by_stu_id(self, stu_id: str) -> bool:
-        data = self._load()
-        new_data = [item for item in data if item['stu_id'] != stu_id]
-        if len(data) == len(new_data):
-            return False
-
-        self._save(new_data)
-        return True
-
-    def update(self, student: Student) -> bool:
-        data = self._load()
-        updated = False
-
-        for i, item in enumerate(data):
-            if item['id'] == student.id:
-                data[i] = student.to_dict()
-                updated = True
-                break
-
-        if updated:
-            self._save(data)
-        return updated
-
-    def is_exist(self, id: str) -> bool:
-        return any(item['id'] == id for item in self._load())
-
-    def is_exist_stu_id(self, stu_id: str) -> bool:
-        return any(item['stu_id'] == stu_id for item in self._load())
-
-    def import_from_csv(self, file_path: str) -> List[Dict]:
-        with open(file_path, 'r', encoding='utf-8-sig') as f:
-            reader = csv.DictReader(f)
-            return [self._convert_row(row) for row in reader]
-
-    def export_to_csv(self, file_path: str) -> bool:
-        try:
-            data = self._load()
-            with open(file_path, 'w', encoding='utf-8-sig', newline='') as f:
-                writer = csv.DictWriter(f, fieldnames=self.FIELD_TYPES.keys())
-                writer.writeheader()
-                writer.writerows(data)
-            return True
-        except:
-            return False
-

README.md

@@ -0,0 +1,2 @@
+# Student
+