29 lines
1.5 KiB
Python
Executable File
29 lines
1.5 KiB
Python
Executable File
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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from datetime import datetime
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from typing import Optional
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from sqlalchemy import String, Text, DateTime, func, BigInteger, Index
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from sqlalchemy.dialects.mysql import MEDIUMBLOB
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from sqlalchemy.dialects.mysql import JSON as MySQLJSON # Changed from postgresql.JSONB to mysql.JSON
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from sqlalchemy.orm import Mapped, mapped_column
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from backend.common.model import Base, id_key, snowflake_id_key
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class File(Base):
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__tablename__ = 'file'
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id: Mapped[snowflake_id_key] = mapped_column(BigInteger, init=False, primary_key=True)
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file_hash: Mapped[str] = mapped_column(String(64), index=True, nullable=False) # SHA256哈希
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file_name: Mapped[str] = mapped_column(String(255), nullable=False) # 原始文件名
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content_type: Mapped[Optional[str]] = mapped_column(String(100), nullable=True) # MIME类型
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file_size: Mapped[int] = mapped_column(BigInteger, nullable=False) # 文件大小(字节)
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storage_path: Mapped[Optional[str]] = mapped_column(Text, nullable=True) # 存储路径（非数据库存储时使用）
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file_data: Mapped[Optional[bytes]] = mapped_column(MEDIUMBLOB, default=None, nullable=True) # 文件二进制数据（数据库存储时使用）
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storage_type: Mapped[str] = mapped_column(String(20), nullable=False, default='database') # 存储类型: database, local, s3
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metadata_info: Mapped[Optional[dict]] = mapped_column(MySQLJSON, default=None, comment="元数据信息")
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__table_args__ = (
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Index('idx_file_name', file_name),
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) |