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304 Zeilen
9.0 KiB
304 Zeilen
9.0 KiB
from sqlalchemy import create_engine,MetaData
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from sqlalchemy import Integer,String,ForeignKey,Column,TEXT,LargeBinary
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from sqlalchemy.orm import relationship
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy.orm import sessionmaker
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from sqlalchemy import PrimaryKeyConstraint,UniqueConstraint
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import sqlalchemy
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import re
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import time
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import jieba.analyse
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from jieba import cut_for_search
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Base=declarative_base()
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class con:
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def connect():
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'''Returns a connection and a metadata object'''
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# We connect with the help of the PostgreSQL URL
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url = 'postgresql://stu10205501415:Stu10205501415@dase-cdms-2022-pub.pg.rds.aliyuncs.com:5432/stu10205501415'
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# The return value of create_engine() is our connection object
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con = create_engine(url, client_encoding='utf8')
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# We then bind the connection to MetaData()
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meta = MetaData(bind=con)
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return con, meta
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class User(Base):
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__tablename__ = 'user'
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user_id = Column(TEXT, primary_key=True, comment="主键")
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password = Column(TEXT, nullable=False, comment="密码")
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balance = Column(Integer, nullable=False, comment="")
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token = Column(TEXT, comment="缓存的令牌")
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terminal = Column(TEXT, comment="终端代码")
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# class Store(Base):
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# __tablename__ = 'store'
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# store_id = Column(TEXT, primary_key=True,comment="主键")
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# stock_level = Column(Integer, comment = "货存")
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class Store_Book(Base):
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__tablename__ = 'store_book'
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store_id = Column(TEXT, comment="主键")
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book_id = Column(TEXT, comment="主键")
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book_info = Column(TEXT, comment="书籍信息")
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stock_level = Column(Integer, comment = "货存")
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__table_args__ = (
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PrimaryKeyConstraint('store_id', 'book_id'),
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)
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class User_Store(Base):
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__tablename__ = 'user_store'
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# id = Column(Integer, primary_key=True, autoincrement=True, comment="主键")
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user_id = Column(
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TEXT,
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# ForeignKey(
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# "user.user_id",
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# ondelete="CASCADE",
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# onupdate="CASCADE",
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# ),
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nullable=False,
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comment="user外键"
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)
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store_id = Column(
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TEXT,
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# ForeignKey(
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# "store.store_id",
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# ondelete="CASCADE",
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# onupdate="CASCADE",
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# ),
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nullable=False,
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comment="store外键"
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)
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# 多对多关系的中间表必须使用联合唯一约束，防止出现重复数据
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__table_args__ = (
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PrimaryKeyConstraint('store_id', 'user_id'),
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)
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class New_Order(Base):
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__tablename__ = 'new_order'
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order_id = Column(TEXT, primary_key = True, comment = '订单id')
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user_id = Column(
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TEXT,
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ForeignKey(
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"user.user_id",
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ondelete="CASCADE",
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onupdate="CASCADE",
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),
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nullable=False,
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comment="user外键"
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)
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store_id = Column(
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TEXT,
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# ForeignKey(
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# "store.store_id",
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# ondelete="CASCADE",
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# onupdate="CASCADE",
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# ),
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nullable=False,
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comment="store外键"
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)
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creat_time = Column(TEXT, nullable=False,comment="订单创建时间")
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status = Column(Integer,nullable=False,comment="订单状态")
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class New_Order_Detail(Base):
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__tablename__ = 'new_order_detail'
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order_id = Column(TEXT, comment='订单id')
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book_id = Column(TEXT, comment='订单书籍')
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count = Column(Integer, comment='购买书籍数')
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price = Column(Integer, comment='单价')
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__table_args__ = (
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PrimaryKeyConstraint('order_id','book_id'),
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)
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class Book(Base):
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__tablename__ = 'book'
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book_id = Column(TEXT, primary_key=True)
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title = Column(TEXT, nullable=False)
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author = Column(TEXT)
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publisher = Column(TEXT)
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original_title = Column(TEXT)
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translator = Column(TEXT)
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pub_year = Column(TEXT)
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pages = Column(Integer)
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original_price = Column(Integer) # 原价
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currency_unit = Column(TEXT)
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binding = Column(TEXT)
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isbn = Column(TEXT)
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author_intro = Column(TEXT)
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book_intro = Column(TEXT)
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content = Column(TEXT)
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tags = Column(TEXT)
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picture = Column(LargeBinary)
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# 搜索标题表
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class Search_title(Base):
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__tablename__ = 'search_title'
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search_id = Column(Integer, nullable=False)
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title = Column(TEXT, nullable=False)
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book_id = Column(TEXT, ForeignKey('book.book_id'), nullable=False)
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__table_args__ = (
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PrimaryKeyConstraint('search_id', 'title'),
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{},
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)
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# 搜索标签表
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class Search_tags(Base):
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__tablename__ = 'search_tags'
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search_id = Column(Integer, nullable=False)
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tags = Column(TEXT, nullable=False)
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book_id = Column(TEXT, ForeignKey('book.book_id'), nullable=False)
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__table_args__ = (
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PrimaryKeyConstraint('search_id', 'tags'),
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{},
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)
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# 搜索作者表
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class Search_author(Base):
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__tablename__ = 'search_author'
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search_id = Column(Integer, nullable=False)
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author = Column(TEXT, nullable=False)
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book_id = Column(TEXT, ForeignKey('book.book_id'), nullable=False)
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__table_args__ = (
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PrimaryKeyConstraint('search_id', 'author'),
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{},
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)
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# 搜索书本内容表
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class Search_book_intro(Base):
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__tablename__ = 'search_book_intro'
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search_id = Column(Integer, nullable=False)
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book_intro = Column(TEXT, nullable=False)
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book_id = Column(TEXT, ForeignKey('book.book_id'), nullable=False)
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__table_args__ = (
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PrimaryKeyConstraint('search_id', 'book_intro'),
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{},
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)
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def insert_tags(session):
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row = session.query(Book).all()
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for i in row:
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tags = i.tags
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for j in tags:
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row_tmp = session.query(Search_tags).filter(Search_tags.tags==j).order_by(Search_tags.search_id.desc()).first()
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if row_tmp is None:
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max_num = 0
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else:
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max_num = row_tmp.search_id + 1
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new_search_tags = Search_tags(search_id=max_num,tags=j,book_id=i.book_id)
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session.add(new_search_tags)
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session.commit()
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def insert_author(session):
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row = session.query(Book).all()
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for i in row:
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tmp = i.author
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if tmp == None:
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j = '作者不详'
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else:
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j = tmp
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row_tmp = session.query(Search_author).filter(Search_author.author==j).order_by(Search_author.search_id.desc()).first()
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if row_tmp is None:
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max_num = 0
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else:
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max_num = row_tmp.search_id + 1
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# print(max_num, j, i.book_id)
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new_search_author = Search_author(search_id=max_num,author=j,book_id=i.book_id)
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session.add(new_search_author)
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session.commit()
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def insert_title(session):
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row = session.query(Book).all()
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for i in row:
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tmp = i.title
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# print(tmp)
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tmp = re.sub(r'[\(\[\{（【][^)）】]*[\)\]\{\】\）]\s?', '', tmp)
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tmp = re.sub(r'[^\w\s]', '', tmp)
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# 处理空标题
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if len(tmp) == 0:
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continue
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# 搜索引擎模式，在精确模式的基础上，对长词再次切分，提高召回率，适合用于搜索引擎分词。
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seg_list = cut_for_search(tmp)
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sig_list = []
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tag = 0
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for k in seg_list:
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sig_list.append(k)
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if k == tmp:
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tag = 1
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if tag == 0:
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sig_list.append(tmp)
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for j in sig_list:
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if j == "" or j == " ":
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continue
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row_tmp = session.query(Search_title).filter(Search_title.title==j).order_by(Search_title.search_id.desc()).first()
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if row_tmp is None:
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max_num = 0
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else:
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max_num = row_tmp.search_id + 1
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# print(max_num, j, i.book_id)
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new_search_title = Search_title(search_id=max_num,title=j,book_id=i.book_id)
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session.add(new_search_title)
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session.commit()
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def insert_book_intro(session):
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row = session.query(Book).all()
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for i in row:
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tmp = i.book_intro
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if tmp != None:
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# print(tmp)
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# 采用textrank进行分词
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keywords_textrank = jieba.analyse.textrank(tmp)
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# print(keywords_textrank)
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# keywords_tfidf = jieba.analyse.extract_tags(tmp)
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# print(keywords_tfidf)
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for j in keywords_textrank:
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row_tmp = session.query(Search_book_intro).filter(Search_book_intro.book_intro==j).order_by(Search_title.search_id.desc()).first()
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if row_tmp is None:
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max_num = 0
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else:
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max_num = row_tmp.search_id + 1
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# print(max_num, j, i.book_id)
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new_search_book_intro = Search_book_intro(search_id=max_num,book_intro=j,book_id=i.book_id)
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session.add(new_search_book_intro)
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session.commit()
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engine, meta = con.connect()
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Base.metadata.bind = engine
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DBSession = sessionmaker(bind=engine)
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session = DBSession()
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insert_tags(session=session)
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insert_author(session=session)
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insert_title(session=session)
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insert_book_intro(session=session)
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