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parallel-library/cps/db.py

434 lines
15 KiB
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# This file is part of the Calibre-Web (https://github.com/janeczku/calibre-web)
# Copyright (C) 2012-2019 mutschler, cervinko, ok11, jkrehm, nanu-c, Wineliva,
# pjeby, elelay, idalin, Ozzieisaacs
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from __future__ import division, print_function, unicode_literals
import sys
import os
import re
import ast
from sqlalchemy import create_engine
from sqlalchemy import Table, Column, ForeignKey
from sqlalchemy import String, Integer, Boolean
from sqlalchemy.orm import relationship, sessionmaker, scoped_session
from sqlalchemy.ext.declarative import declarative_base
session = None
cc_exceptions = ['datetime', 'comments', 'float', 'composite', 'series']
cc_classes = {}
Base = declarative_base()
books_authors_link = Table('books_authors_link', Base.metadata,
Column('book', Integer, ForeignKey('books.id'), primary_key=True),
Column('author', Integer, ForeignKey('authors.id'), primary_key=True)
)
books_tags_link = Table('books_tags_link', Base.metadata,
Column('book', Integer, ForeignKey('books.id'), primary_key=True),
Column('tag', Integer, ForeignKey('tags.id'), primary_key=True)
)
books_series_link = Table('books_series_link', Base.metadata,
Column('book', Integer, ForeignKey('books.id'), primary_key=True),
Column('series', Integer, ForeignKey('series.id'), primary_key=True)
)
books_ratings_link = Table('books_ratings_link', Base.metadata,
Column('book', Integer, ForeignKey('books.id'), primary_key=True),
Column('rating', Integer, ForeignKey('ratings.id'), primary_key=True)
)
books_languages_link = Table('books_languages_link', Base.metadata,
Column('book', Integer, ForeignKey('books.id'), primary_key=True),
Column('lang_code', Integer, ForeignKey('languages.id'), primary_key=True)
)
books_publishers_link = Table('books_publishers_link', Base.metadata,
Column('book', Integer, ForeignKey('books.id'), primary_key=True),
Column('publisher', Integer, ForeignKey('publishers.id'), primary_key=True)
)
class Identifiers(Base):
__tablename__ = 'identifiers'
id = Column(Integer, primary_key=True)
type = Column(String)
val = Column(String)
book = Column(Integer, ForeignKey('books.id'))
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def __init__(self, val, id_type, book):
self.val = val
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self.type = id_type
self.book = book
def formatType(self):
if self.type == "amazon":
return u"Amazon"
elif self.type == "isbn":
return u"ISBN"
elif self.type == "doi":
return u"DOI"
elif self.type == "goodreads":
return u"Goodreads"
elif self.type == "google":
return u"Google Books"
elif self.type == "kobo":
return u"Kobo"
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if self.type == "lubimyczytac":
return u"Lubimyczytac"
else:
return self.type
def __repr__(self):
if self.type == "amazon":
return u"https://amzn.com/{0}".format(self.val)
elif self.type == "isbn":
return u"http://www.worldcat.org/isbn/{0}".format(self.val)
elif self.type == "doi":
return u"http://dx.doi.org/{0}".format(self.val)
elif self.type == "goodreads":
return u"http://www.goodreads.com/book/show/{0}".format(self.val)
elif self.type == "douban":
return u"https://book.douban.com/subject/{0}".format(self.val)
elif self.type == "google":
return u"https://books.google.com/books?id={0}".format(self.val)
elif self.type == "kobo":
return u"https://www.kobo.com/ebook/{0}".format(self.val)
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elif self.type == "lubimyczytac":
return u" http://lubimyczytac.pl/ksiazka/{0}".format(self.val)
elif self.type == "url":
return u"{0}".format(self.val)
else:
return u""
class Comments(Base):
__tablename__ = 'comments'
id = Column(Integer, primary_key=True)
text = Column(String)
book = Column(Integer, ForeignKey('books.id'))
def __init__(self, text, book):
self.text = text
self.book = book
def __repr__(self):
return u"<Comments({0})>".format(self.text)
class Tags(Base):
__tablename__ = 'tags'
id = Column(Integer, primary_key=True, autoincrement=True)
name = Column(String)
def __init__(self, name):
self.name = name
def __repr__(self):
return u"<Tags('{0})>".format(self.name)
class Authors(Base):
__tablename__ = 'authors'
id = Column(Integer, primary_key=True)
name = Column(String)
sort = Column(String)
link = Column(String)
def __init__(self, name, sort, link):
self.name = name
self.sort = sort
self.link = link
def __repr__(self):
return u"<Authors('{0},{1}{2}')>".format(self.name, self.sort, self.link)
class Series(Base):
__tablename__ = 'series'
id = Column(Integer, primary_key=True)
name = Column(String)
sort = Column(String)
def __init__(self, name, sort):
self.name = name
self.sort = sort
def __repr__(self):
return u"<Series('{0},{1}')>".format(self.name, self.sort)
class Ratings(Base):
__tablename__ = 'ratings'
id = Column(Integer, primary_key=True)
rating = Column(Integer)
def __init__(self, rating):
self.rating = rating
def __repr__(self):
return u"<Ratings('{0}')>".format(self.rating)
class Languages(Base):
__tablename__ = 'languages'
id = Column(Integer, primary_key=True)
lang_code = Column(String)
def __init__(self, lang_code):
self.lang_code = lang_code
def __repr__(self):
return u"<Languages('{0}')>".format(self.lang_code)
class Publishers(Base):
__tablename__ = 'publishers'
id = Column(Integer, primary_key=True)
name = Column(String)
sort = Column(String)
def __init__(self, name, sort):
self.name = name
self.sort = sort
def __repr__(self):
return u"<Publishers('{0},{1}')>".format(self.name, self.sort)
class Data(Base):
__tablename__ = 'data'
id = Column(Integer, primary_key=True)
book = Column(Integer, ForeignKey('books.id'))
format = Column(String)
uncompressed_size = Column(Integer)
name = Column(String)
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def __init__(self, book, book_format, uncompressed_size, name):
self.book = book
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self.format = book_format
self.uncompressed_size = uncompressed_size
self.name = name
def __repr__(self):
return u"<Data('{0},{1}{2}{3}')>".format(self.book, self.format, self.uncompressed_size, self.name)
class Books(Base):
__tablename__ = 'books'
DEFAULT_PUBDATE = "0101-01-01 00:00:00+00:00"
id = Column(Integer, primary_key=True)
title = Column(String)
sort = Column(String)
author_sort = Column(String)
timestamp = Column(String)
pubdate = Column(String)
series_index = Column(String)
last_modified = Column(String)
path = Column(String)
has_cover = Column(Integer)
uuid = Column(String)
authors = relationship('Authors', secondary=books_authors_link, backref='books')
tags = relationship('Tags', secondary=books_tags_link, backref='books',order_by="Tags.name")
comments = relationship('Comments', backref='books')
data = relationship('Data', backref='books')
series = relationship('Series', secondary=books_series_link, backref='books')
ratings = relationship('Ratings', secondary=books_ratings_link, backref='books')
languages = relationship('Languages', secondary=books_languages_link, backref='books')
publishers = relationship('Publishers', secondary=books_publishers_link, backref='books')
identifiers = relationship('Identifiers', backref='books')
def __init__(self, title, sort, author_sort, timestamp, pubdate, series_index, last_modified, path, has_cover,
authors, tags, languages=None):
self.title = title
self.sort = sort
self.author_sort = author_sort
self.timestamp = timestamp
self.pubdate = pubdate
self.series_index = series_index
self.last_modified = last_modified
self.path = path
self.has_cover = has_cover
def __repr__(self):
return u"<Books('{0},{1}{2}{3}{4}{5}{6}{7}{8}')>".format(self.title, self.sort, self.author_sort,
self.timestamp, self.pubdate, self.series_index,
self.last_modified, self.path, self.has_cover)
@property
def atom_timestamp(self):
return (self.timestamp or '').replace(' ', 'T')
class Custom_Columns(Base):
__tablename__ = 'custom_columns'
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id = Column(Integer, primary_key=True)
label = Column(String)
name = Column(String)
datatype = Column(String)
mark_for_delete = Column(Boolean)
editable = Column(Boolean)
display = Column(String)
is_multiple = Column(Boolean)
normalized = Column(Boolean)
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def get_display_dict(self):
display_dict = ast.literal_eval(self.display)
if sys.version_info < (3, 0):
display_dict['enum_values'] = [x.decode('unicode_escape') for x in display_dict['enum_values']]
return display_dict
def update_title_sort(config, conn=None):
# user defined sort function for calibre databases (Series, etc.)
def _title_sort(title):
# calibre sort stuff
title_pat = re.compile(config.config_title_regex, re.IGNORECASE)
match = title_pat.search(title)
if match:
prep = match.group(1)
title = title.replace(prep, '') + ', ' + prep
return title.strip()
conn = conn or session.connection().connection.connection
conn.create_function("title_sort", 1, _title_sort)
def setup_db(config):
dispose()
if not config.config_calibre_dir:
config.invalidate()
return False
dbpath = os.path.join(config.config_calibre_dir, "metadata.db")
if not os.path.exists(dbpath):
config.invalidate()
return False
try:
engine = create_engine('sqlite:///{0}'.format(dbpath),
echo=False,
isolation_level="SERIALIZABLE",
connect_args={'check_same_thread': False})
conn = engine.connect()
except:
config.invalidate()
return False
config.db_configured = True
update_title_sort(config, conn.connection)
# conn.connection.create_function('lower', 1, lcase)
# conn.connection.create_function('upper', 1, ucase)
if not cc_classes:
cc = conn.execute("SELECT id, datatype FROM custom_columns")
cc_ids = []
books_custom_column_links = {}
for row in cc:
if row.datatype not in cc_exceptions:
books_custom_column_links[row.id] = Table('books_custom_column_' + str(row.id) + '_link', Base.metadata,
Column('book', Integer, ForeignKey('books.id'),
primary_key=True),
Column('value', Integer,
ForeignKey('custom_column_' + str(row.id) + '.id'),
primary_key=True)
)
cc_ids.append([row.id, row.datatype])
if row.datatype == 'bool':
ccdict = {'__tablename__': 'custom_column_' + str(row.id),
'id': Column(Integer, primary_key=True),
'book': Column(Integer, ForeignKey('books.id')),
'value': Column(Boolean)}
elif row.datatype == 'int':
ccdict = {'__tablename__': 'custom_column_' + str(row.id),
'id': Column(Integer, primary_key=True),
'book': Column(Integer, ForeignKey('books.id')),
'value': Column(Integer)}
else:
ccdict = {'__tablename__': 'custom_column_' + str(row.id),
'id': Column(Integer, primary_key=True),
'value': Column(String)}
cc_classes[row.id] = type(str('Custom_Column_' + str(row.id)), (Base,), ccdict)
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for cc_id in cc_ids:
if (cc_id[1] == 'bool') or (cc_id[1] == 'int'):
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setattr(Books, 'custom_column_' + str(cc_id[0]), relationship(cc_classes[cc_id[0]],
primaryjoin=(
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Books.id == cc_classes[cc_id[0]].book),
backref='books'))
else:
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setattr(Books, 'custom_column_' + str(cc_id[0]), relationship(cc_classes[cc_id[0]],
secondary=books_custom_column_links[cc_id[0]],
backref='books'))
global session
Session = scoped_session(sessionmaker(autocommit=False,
autoflush=False,
bind=engine))
session = Session()
return True
def dispose():
global session
engine = None
if session:
engine = session.bind
try: session.close()
except: pass
session = None
if engine:
try: engine.dispose()
except: pass
for attr in list(Books.__dict__.keys()):
if attr.startswith("custom_column_"):
delattr(Books, attr)
for db_class in cc_classes.values():
Base.metadata.remove(db_class.__table__)
cc_classes.clear()
for table in reversed(Base.metadata.sorted_tables):
name = table.key
if name.startswith("custom_column_") or name.startswith("books_custom_column_"):
if table is not None:
Base.metadata.remove(table)