#! /usr/bin/env python
+__all__ = ['Author', 'Book', 'Extension', 'Genre', 'Language',
+ 'init_db', 'insert_name', 'update_counters',
+ ]
+
import os
from sqlobject import SQLObject, StringCol, UnicodeCol, IntCol, BoolCol, \
- ForeignKey, DateCol, connectionForURI, sqlhub, dberrors
+ ForeignKey, DateCol, DatabaseIndex, RelatedJoin, \
+ connectionForURI, sqlhub, SQLObjectNotFound, dberrors
from .config import ml_conf
try:
except OSError: # Perhaps already exists
pass
db_file = os.path.join(db_dir, 'm_librarian.sqlite')
- db_uri = 'sqlite://%s' % db_file.replace(os.sep, '/')
-sqlhub.processConnection = connectionForURI(db_uri)
+ db_uri = 'sqlite://%s' % db_file.replace(os.sep, '/')
+
+
+sqlhub.processConnection = connection = connectionForURI(db_uri)
+
+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 Author(SQLObject):
name = UnicodeCol(unique=True)
count = IntCol()
+ count_idx = DatabaseIndex('count')
+ books = RelatedJoin('Book', otherColumn='book_id')
class Book(SQLObject):
- author = ForeignKey('Author')
- genre = ForeignKey('Genre')
+ authors = RelatedJoin('Author')
+ genres = RelatedJoin('Genre')
title = UnicodeCol()
series = UnicodeCol()
ser_no = IntCol()
+ archive = StringCol()
file = StringCol()
size = IntCol()
lib_id = StringCol()
deleted = BoolCol()
- ext = ForeignKey('Extension')
+ extension = ForeignKey('Extension')
date = DateCol()
language = ForeignKey('Language')
+ archive_file_idx = DatabaseIndex('archive', 'file', unique=True)
class Extension(SQLObject):
name = StringCol(unique=True)
count = IntCol()
+ count_idx = DatabaseIndex('count')
class Genre(SQLObject):
name = StringCol(unique=True)
title = UnicodeCol()
count = IntCol()
+ count_idx = DatabaseIndex('count')
+ books = RelatedJoin('Book', otherColumn='book_id')
class Language(SQLObject):
name = StringCol(unique=True)
count = IntCol()
+ count_idx = DatabaseIndex('count')
def init_db():
return
-if __name__ == '__main__':
+def insert_name(table, name, **kw):
+ try:
+ return table.byName(name)
+ except SQLObjectNotFound:
+ return table(name=name, count=0, **kw)
+
+
+def update_counters():
+ for author in Author.select():
+ author.count = len(author.books)
+
+ 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)
+
+ for language in Language.select():
+ language.count = Book.select(Book.q.language == language.name).count()
+
+
+def test():
print "DB dirs:", db_dirs
if db_uri:
print "DB URI:", db_uri
+
+if __name__ == '__main__':
+ test()