This repository has been archived by the owner on Jul 20, 2019. It is now read-only.
/
db.py
70 lines (46 loc) · 1.45 KB
/
db.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
#coding: utf-8
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker, scoped_session
from sqlalchemy.sql import and_
from config import database_url, pr_iterate_times
from models import Base, Page
import pr
engine = create_engine(database_url, encoding='utf-8')
session = scoped_session(sessionmaker(bind=engine, autoflush=True,
expire_on_commit=False))
def create_all():
Base.metadata.create_all(engine)
def drop_all():
Base.metadata.drop_all(engine)
def commit():
session.commit()
def _get_all(model, cond):
ret = session.query(model).filter(cond)
return ret.all() if ret.count() else None
def _get_one(model, cond):
ret = _get_all(model, cond)
return ret[0] if ret else None
def get_page(name, section):
return _get_one(Page, and_(Page.name == name, Page.section == section))
def add_page(name, section, relatives=None):
page, found = get_page(name, section), True
if not page:
page = Page(name, section)
found = False
relatives = relatives or []
for n, s in relatives:
page.fromme.append(add_page(n, s))
if not found:
session.add(page)
return page
def init_rating():
pages = session.query(Page).all()
pr.init_rank(pages)
pr.finish()
session.commit()
def rating():
pages = session.query(Page).all()
pr.setup(pages)
pr.iterate(pr_iterate_times)
pr.finish()
session.commit()