#! /usr/bin/env python
__all__ = ['Author', 'Book', 'Extension', 'Genre', 'Language',
- 'AuthorBook', 'BookGenre',
- 'init_db', 'insert_name', 'update_counters',
+ 'AuthorBook', 'BookGenre', 'open_db', 'init_db',
+ 'insert_name', 'insert_author', 'update_counters',
]
import os
from sqlobject import SQLObject, StringCol, UnicodeCol, IntCol, BoolCol, \
ForeignKey, DateCol, DatabaseIndex, RelatedJoin, \
connectionForURI, sqlhub, SQLObjectNotFound, dberrors
-from .config import ml_conf
+from .config import get_config
-try:
- db_uri = ml_conf.get('database', 'URI')
-except:
- db_uri = None
-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):
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, '/')
+
+
+def open_db(db_uri=None):
+ if db_uri is None:
+ try:
+ db_uri = get_config().get('database', 'URI')
+ except:
+ db_uri = find_sqlite_dburi()
+
+ sqlhub.processConnection = connection = connectionForURI(db_uri)
+ if connection.dbName == 'sqlite':
+ def lower(s):
+ return s.lower()
-sqlhub.processConnection = connection = connectionForURI(db_uri)
+ sqlite = connection.module
-if connection.dbName == 'sqlite':
- # 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")
+ 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
+
+ # 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")
class Author(SQLObject):
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)
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 = len(author.books)
+ author.count = AuthorBook.select(AuthorBook.q.author == author).count()
for ext in Extension.select():
ext.count = Book.select(Book.q.extension == ext.name).count()
for genre in Genre.select():
- genre.count = len(genre.books)
+ genre.count = BookGenre.select(BookGenre.q.genre == genre).count()
for language in Language.select():
language.count = Book.select(Book.q.language == language.name).count()
def test():
+ db_dirs = find_sqlite_db_dirs()
print "DB dirs:", db_dirs
- if db_uri:
- print "DB URI:", db_uri
+ print "DB URI:", find_sqlite_dburi()
if __name__ == '__main__':
test()