#! /usr/bin/env python
+from __future__ import print_function
+import os
+from sqlobject import SQLObject, StringCol, UnicodeCol, IntCol, BoolCol, \
+ ForeignKey, DateCol, DatabaseIndex, RelatedJoin, \
+ connectionForURI, sqlhub, SQLObjectNotFound, dberrors
+from .compat import string_type
+from .config import get_config
+
__all__ = ['Author', 'Book', 'Extension', 'Genre', 'Language',
- 'init_db',
+ 'AuthorBook', 'BookGenre', 'open_db', 'init_db',
+ 'insert_name', 'insert_author', 'update_counters',
]
-import os
-from sqlobject import SQLObject, StringCol, UnicodeCol, IntCol, BoolCol, \
- ForeignKey, DateCol, connectionForURI, sqlhub, dberrors
-from .config import ml_conf
-try:
- db_uri = ml_conf.get('database', 'URI')
-except:
- db_uri = None
+class Author(SQLObject):
+ surname = UnicodeCol(notNull=True)
+ name = UnicodeCol(notNull=True)
+ misc_name = UnicodeCol(notNull=True)
+ count = IntCol(notNull=True)
+ books = RelatedJoin('Book', otherColumn='book_id',
+ intermediateTable='author_book',
+ createRelatedTable=False)
+
+ @property
+ def fullname(self):
+ fullnames = filter(None, (self.surname, self.name, self.misc_name))
+ return ' '.join(fullnames)
+
+ full_name_idx = DatabaseIndex(surname, name, misc_name, unique=True)
+ count_idx = DatabaseIndex(count)
+
+
+class AuthorBook(SQLObject):
+ class sqlmeta:
+ table = "author_book"
+ author = ForeignKey('Author', notNull=True, cascade=True)
+ book = ForeignKey('Book', notNull=True, cascade=True)
+ author_idx = DatabaseIndex(author)
+ book_idx = DatabaseIndex(book)
+ main_idx = DatabaseIndex(author, book, unique=True)
+
+
+class Book(SQLObject):
+ authors = RelatedJoin('Author',
+ intermediateTable='author_book',
+ createRelatedTable=False)
+ genres = RelatedJoin('Genre',
+ intermediateTable='book_genre',
+ createRelatedTable=False)
+ title = UnicodeCol(notNull=True)
+ series = UnicodeCol(notNull=True)
+ ser_no = IntCol()
+ archive = StringCol(notNull=True)
+ file = StringCol(notNull=True)
+ size = IntCol(notNull=True)
+ lib_id = StringCol(notNull=True)
+ deleted = BoolCol(notNull=True)
+ extension = ForeignKey('Extension', notNull=True)
+ date = DateCol(notNull=True)
+ language = ForeignKey('Language')
+ title_idx = DatabaseIndex(title)
+ series_idx = DatabaseIndex(series)
+ ser_no_idx = DatabaseIndex(ser_no)
+ archive_idx = DatabaseIndex(archive)
+ archive_file_idx = DatabaseIndex(archive, file, unique=True)
+ file_idx = DatabaseIndex(file)
+ size_idx = DatabaseIndex(size)
+ deleted_idx = DatabaseIndex(deleted)
+ extension_idx = DatabaseIndex(extension)
+ date_idx = DatabaseIndex(date)
+ language_idx = DatabaseIndex(language)
+
+
+class BookGenre(SQLObject):
+ class sqlmeta:
+ table = "book_genre"
+ book = ForeignKey('Book', notNull=True, cascade=True)
+ genre = ForeignKey('Genre', notNull=True, cascade=True)
+ book_idx = DatabaseIndex(book)
+ genre_idx = DatabaseIndex(genre)
+ main_idx = DatabaseIndex(book, genre, unique=True)
+
+
+class Extension(SQLObject):
+ name = UnicodeCol(notNull=True, unique=True)
+ count = IntCol(notNull=True)
+ count_idx = DatabaseIndex(count)
+
+
+class Genre(SQLObject):
+ name = UnicodeCol(notNull=True, unique=True)
+ title = UnicodeCol(notNull=True)
+ count = IntCol(notNull=True)
+ books = RelatedJoin('Book', otherColumn='book_id',
+ intermediateTable='book_genre',
+ createRelatedTable=False)
+ title_idx = DatabaseIndex(title)
+ count_idx = DatabaseIndex(count)
+
+
+class Language(SQLObject):
+ name = UnicodeCol(notNull=True, unique=True)
+ count = IntCol(notNull=True)
+ count_idx = DatabaseIndex(count)
+
-db_dirs = []
-if not db_uri:
+def _find_sqlite_db_dirs_posix():
+ db_dirs = []
if 'XDG_CACHE_HOME' in os.environ:
db_dirs.append(os.environ['XDG_CACHE_HOME'])
home_cache = os.path.expanduser('~/.cache')
if home_cache not in db_dirs:
db_dirs.append(home_cache)
+ return db_dirs
+
+def find_sqlite_db_dirs():
+ if os.name == 'posix':
+ return _find_sqlite_db_dirs_posix()
+ raise OSError("Unknow OS")
+
+
+def find_sqlite_dburi(db_dirs=None):
+ if db_dirs is None:
+ db_dirs = find_sqlite_db_dirs()
for d in db_dirs:
db_file = os.path.join(d, 'm_librarian.sqlite')
if os.path.exists(db_file):
else:
# octal; -rw-------;
# make the database file/directory readable/writeable only by the user
- os.umask(0066)
+ os.umask(0o66)
db_dir = db_dirs[0]
try:
os.makedirs(db_dir)
pass
db_file = os.path.join(db_dir, 'm_librarian.sqlite')
- db_uri = 'sqlite://%s' % db_file.replace(os.sep, '/')
+ return 'sqlite://%s' % db_file.replace(os.sep, '/')
-sqlhub.processConnection = connectionForURI(db_uri)
+def open_db(db_uri=None):
+ if db_uri is None:
+ try:
+ db_uri = get_config().get('database', 'URI')
+ except Exception:
+ db_uri = find_sqlite_dburi()
-class Author(SQLObject):
- name = UnicodeCol(unique=True)
- count = IntCol()
+ if '://' not in db_uri:
+ db_uri = 'sqlite://' + os.path.abspath(db_uri).replace(os.sep, '/')
+ sqlhub.processConnection = connection = connectionForURI(db_uri)
-class Book(SQLObject):
- author = ForeignKey('Author')
- genre = ForeignKey('Genre')
- title = UnicodeCol()
- series = UnicodeCol()
- ser_no = IntCol()
- file = StringCol()
- size = IntCol()
- lib_id = StringCol()
- deleted = BoolCol()
- ext = ForeignKey('Extension')
- date = DateCol()
- language = ForeignKey('Language')
-
-
-class Extension(SQLObject):
- name = StringCol(unique=True)
- count = IntCol()
+ if connection.dbName == 'sqlite':
+ def lower(s):
+ if isinstance(s, string_type):
+ return s.lower()
+ return s
+ sqlite = connection.module
-class Genre(SQLObject):
- name = StringCol(unique=True)
- title = UnicodeCol()
- count = IntCol()
+ class MLConnection(sqlite.Connection):
+ def __init__(self, *args, **kwargs):
+ super(MLConnection, self).__init__(*args, **kwargs)
+ self.create_function('lower', 1, lower)
+ # This hack must be done at the very beginning, before the first query
+ connection._connOptions['factory'] = MLConnection
-class Language(SQLObject):
- name = StringCol(unique=True)
- count = IntCol()
+ # Speedup SQLite connection
+ connection.query("PRAGMA synchronous=OFF")
+ connection.query("PRAGMA count_changes=OFF")
+ connection.query("PRAGMA journal_mode=MEMORY")
+ connection.query("PRAGMA temp_store=MEMORY")
def init_db():
except IndexError: # Table exists but is empty
return
except dberrors.Error:
- for table in Author, Extension, Genre, Language, Book:
+ for table in Author, Extension, Genre, Language, Book, \
+ AuthorBook, BookGenre:
table.createTable()
else:
return
+def insert_name(table, name, **kw):
+ try:
+ return table.byName(name)
+ except SQLObjectNotFound:
+ return table(name=name, count=0, **kw)
+
+
+def insert_author(surname, name, misc_name):
+ try:
+ return Author.full_name_idx.get(
+ surname=surname, name=name, misc_name=misc_name)
+ except SQLObjectNotFound:
+ return Author(surname=surname, name=name, misc_name=misc_name, count=0)
+
+
+def update_counters():
+ for author in Author.select():
+ author.count = AuthorBook.select(AuthorBook.q.author == author).count()
+
+ for ext in Extension.select():
+ ext.count = Book.select(Book.q.extension == ext.id).count()
+
+ for genre in Genre.select():
+ genre.count = BookGenre.select(BookGenre.q.genre == genre).count()
+
+ for language in Language.select():
+ language.count = Book.select(Book.q.language == language.id).count()
+
+
def test():
- print "DB dirs:", db_dirs
- if db_uri:
- print "DB URI:", db_uri
+ db_dirs = find_sqlite_db_dirs()
+ print("DB dirs:", db_dirs)
+ print("DB URI:", find_sqlite_dburi())
+
if __name__ == '__main__':
test()
projects / m_librarian.git / blobdiff