X-Git-Url: https://git.phdru.name/?a=blobdiff_plain;f=m_librarian%2Fdb.py;h=88b0b11609632658e18c69eb5be00acf3b2f277e;hb=924bbc89d4f1ffa35e747ca4a5d63601275c8760;hp=99a2843aa42f3ad5f347a86efaecde0b30b6a1d5;hpb=f29d3e8f0981bcc8df87b8e661a5bf019a152fae;p=m_librarian.git diff --git a/m_librarian/db.py b/m_librarian/db.py index 99a2843..88b0b11 100755 --- a/m_librarian/db.py +++ b/m_librarian/db.py @@ -1,55 +1,17 @@ #! /usr/bin/env python -__all__ = ['Author', 'Book', 'Extension', 'Genre', 'Language', - 'AuthorBook', 'BookGenre', - 'init_db', 'insert_name', 'insert_author', 'update_counters', - ] - +from __future__ import print_function import os from sqlobject import SQLObject, StringCol, UnicodeCol, IntCol, BoolCol, \ ForeignKey, DateCol, DatabaseIndex, RelatedJoin, \ connectionForURI, sqlhub, SQLObjectNotFound, dberrors -from .config import ml_conf - -try: - db_uri = ml_conf.get('database', 'URI') -except: - db_uri = None - -db_dirs = [] -if not db_uri: - 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) - - for d in db_dirs: - db_file = os.path.join(d, 'm_librarian.sqlite') - if os.path.exists(db_file): - break - else: - # octal; -rw-------; - # make the database file/directory readable/writeable only by the user - os.umask(0066) - db_dir = db_dirs[0] - try: - os.makedirs(db_dir) - except OSError: # Perhaps already exists - pass - db_file = os.path.join(db_dir, 'm_librarian.sqlite') +from .compat import string_type +from .config import get_config - 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") +__all__ = ['Author', 'Book', 'Extension', 'Genre', 'Language', + 'AuthorBook', 'BookGenre', 'open_db', 'init_db', + 'insert_name', 'insert_author', 'update_counters', + ] class Author(SQLObject): @@ -60,6 +22,12 @@ class Author(SQLObject): 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) @@ -85,7 +53,7 @@ class Book(SQLObject): series = UnicodeCol(notNull=True) ser_no = IntCol() archive = StringCol(notNull=True) - file = StringCol(notNull=True) + file = UnicodeCol(notNull=True) size = IntCol(notNull=True) lib_id = StringCol(notNull=True) deleted = BoolCol(notNull=True) @@ -104,6 +72,30 @@ class Book(SQLObject): 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: @@ -116,13 +108,13 @@ class BookGenre(SQLObject): class Extension(SQLObject): - name = StringCol(notNull=True, unique=True) + name = UnicodeCol(notNull=True, unique=True) count = IntCol(notNull=True) count_idx = DatabaseIndex(count) class Genre(SQLObject): - name = StringCol(notNull=True, unique=True) + name = UnicodeCol(notNull=True, unique=True) title = UnicodeCol(notNull=True) count = IntCol(notNull=True) books = RelatedJoin('Book', otherColumn='book_id', @@ -133,11 +125,80 @@ class Genre(SQLObject): class Language(SQLObject): - name = StringCol(notNull=True, unique=True) + 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): + break + else: + # octal; -rw-------; + # make the database file/directory readable/writeable only by the user + os.umask(0o66) + db_dir = db_dirs[0] + try: + os.makedirs(db_dir) + except OSError: # Perhaps already exists + pass + db_file = os.path.join(db_dir, 'm_librarian.sqlite') + + return 'sqlite://%s' % db_file.replace(os.sep, '/') + + +def open_db(db_uri=None): + if db_uri is None: + db_uri = get_config().get('database', 'URI') or find_sqlite_dburi() + + if '://' not in db_uri: + db_uri = 'sqlite://' + os.path.abspath(db_uri).replace(os.sep, '/') + + sqlhub.processConnection = connection = connectionForURI(db_uri) + + if connection.dbName == 'sqlite': + def lower(s): + if isinstance(s, string_type): + return s.lower() + return s + + sqlite = connection.module + + 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") + + def init_db(): try: Book.select()[0] @@ -166,24 +227,49 @@ def insert_author(surname, name, misc_name): return Author(surname=surname, name=name, misc_name=misc_name, count=0) -def update_counters(): +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.name).count() + 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.name).count() + 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()