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43 lines
1.4 KiB
43 lines
1.4 KiB
from sqlalchemy import create_engine, Column, Integer, String, ForeignKey
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy.orm import relationship
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import os
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from cppy.cp_util import db_filename
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# 定义数据模型和数据库连接
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Base = declarative_base()
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# 获取当前文件所在的目录
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current_dir = os.path.dirname(os.path.abspath(__file__))
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# 构造数据库文件的完整路径
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db_file_path = os.path.join(current_dir, db_filename)
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DATABASE_URI = f"sqlite:///{db_file_path}"
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# 创建数据库引擎
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engine = create_engine(DATABASE_URI, echo=True)
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class TextFile(Base):
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__tablename__ = 'text_files'
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id = Column(Integer, primary_key=True)
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filepath = Column(String, unique=True)
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content = Column(String)
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words = relationship("WordFrequency", back_populates="textfile")
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class WordFrequency(Base):
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__tablename__ = 'word_frequencies'
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id = Column(Integer, primary_key=True)
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word = Column(String)
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frequency = Column(Integer)
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textfile_id = Column(Integer, ForeignKey('text_files.id'))
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textfile = relationship("TextFile", back_populates="words")
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if __name__ == '__main__':
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# 检查数据库文件是否存在
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if os.path.exists(db_file_path):
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os.remove(db_file_path)
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Base.metadata.create_all(engine) |