X-Git-Url: https://git.phdru.name/?a=blobdiff_plain;f=m_librarian%2Fdb.py;h=88b0b11609632658e18c69eb5be00acf3b2f277e;hb=924bbc89d4f1ffa35e747ca4a5d63601275c8760;hp=199f967b929152bdc33c329ed7bb4d1492f578b0;hpb=33c7142a48442ee0cd1a95269ac55d4238097a28;p=m_librarian.git diff --git a/m_librarian/db.py b/m_librarian/db.py index 199f967..88b0b11 100755 --- a/m_librarian/db.py +++ b/m_librarian/db.py @@ -1,27 +1,154 @@ #! /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 = UnicodeCol(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) + + @property + def author1(self): + return self.authors[0].fullname + + @property + def author_list(self): + return u', '.join([a.fullname for a in self.authors]) + + @property + def genre1name(self): + return self.genres[0].name + + @property + def genre1title(self): + return self.genres[0].title + + @property + def genre_name_list(self): + return u', '.join([g.name for g in self.genres]) + + @property + def genre_title_list(self): + return u', '.join([g.title for g in self.genres]) + + +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) + -db_dirs = [] -if not db_uri: +class Language(SQLObject): + name = UnicodeCol(notNull=True, unique=True) + count = IntCol(notNull=True) + count_idx = DatabaseIndex(count) + + +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): @@ -29,7 +156,7 @@ if not db_uri: 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) @@ -37,46 +164,39 @@ if not db_uri: 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: + db_uri = get_config().get('database', 'URI') or 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() - archive = StringCol() - file = StringCol() - size = IntCol() - lib_id = StringCol() - deleted = BoolCol() - ext = ForeignKey('Extension') - date = DateCol() - language = ForeignKey('Language') + if connection.dbName == 'sqlite': + def lower(s): + if isinstance(s, string_type): + return s.lower() + return s + sqlite = connection.module -class Extension(SQLObject): - name = StringCol(unique=True) - 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 Genre(SQLObject): - name = StringCol(unique=True) - title = UnicodeCol() - count = IntCol() - - -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(): @@ -85,16 +205,71 @@ 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(pbar_cb=None): + if pbar_cb: + count = 0 + for table in Author, Extension, Genre, Language: + count += table.select().count() + pbar_cb.set_max(count) + + if pbar_cb: + count = 0 + + for author in Author.select(): + author.count = AuthorBook.select(AuthorBook.q.author == author).count() + if pbar_cb: + count += 1 + pbar_cb.display(count) + + for ext in Extension.select(): + ext.count = Book.select(Book.q.extension == ext.id).count() + if pbar_cb: + count += 1 + pbar_cb.display(count) + + for genre in Genre.select(): + genre.count = BookGenre.select(BookGenre.q.genre == genre).count() + if pbar_cb: + count += 1 + pbar_cb.display(count) + + for language in Language.select(): + language.count = Book.select(Book.q.language == language.id).count() + if pbar_cb: + count += 1 + pbar_cb.display(count) + + if pbar_cb: + pbar_cb.close() + + 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()