openlp/openlp/plugins/songs/lib/olpimport.py

221 lines
10 KiB
Python

# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4
###############################################################################
# OpenLP - Open Source Lyrics Projection #
# --------------------------------------------------------------------------- #
# Copyright (c) 2008-2014 Raoul Snyman #
# Portions copyright (c) 2008-2014 Tim Bentley, Gerald Britton, Jonathan #
# Corwin, Samuel Findlay, Michael Gorven, Scott Guerrieri, Matthias Hub, #
# Meinert Jordan, Armin Köhler, Erik Lundin, Edwin Lunando, Brian T. Meyer. #
# Joshua Miller, Stevan Pettit, Andreas Preikschat, Mattias Põldaru, #
# Christian Richter, Philip Ridout, Simon Scudder, Jeffrey Smith, #
# Maikel Stuivenberg, Martin Thompson, Jon Tibble, Dave Warnock, #
# Frode Woldsund, Martin Zibricky, Patrick Zimmermann #
# --------------------------------------------------------------------------- #
# This program is free software; you can redistribute it and/or modify it #
# under the terms of the GNU General Public License as published by the Free #
# Software Foundation; version 2 of the License. #
# #
# This program is distributed in the hope that it will be useful, but WITHOUT #
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or #
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for #
# more details. #
# #
# You should have received a copy of the GNU General Public License along #
# with this program; if not, write to the Free Software Foundation, Inc., 59 #
# Temple Place, Suite 330, Boston, MA 02111-1307 USA #
###############################################################################
"""
The :mod:`olpimport` module provides the functionality for importing OpenLP
song databases into the current installation database.
"""
import logging
from sqlalchemy import create_engine, MetaData, Table
from sqlalchemy.orm import class_mapper, mapper, relation, scoped_session, sessionmaker
from sqlalchemy.orm.exc import UnmappedClassError
from openlp.core.common import translate
from openlp.core.lib.db import BaseModel
from openlp.core.ui.wizard import WizardStrings
from openlp.plugins.songs.lib import clean_song
from openlp.plugins.songs.lib.db import Author, Book, Song, Topic, MediaFile
from .songimport import SongImport
log = logging.getLogger(__name__)
class OpenLPSongImport(SongImport):
"""
The :class:`OpenLPSongImport` class provides OpenLP with the ability to
import song databases from other installations of OpenLP.
"""
def __init__(self, manager, **kwargs):
"""
Initialise the import.
:param manager: The song manager for the running OpenLP installation.
:param kwargs: The database providing the data to import.
"""
SongImport.__init__(self, manager, **kwargs)
self.source_session = None
def do_import(self, progress_dialog=None):
"""
Run the import for an OpenLP version 2 song database.
:param progress_dialog: The QProgressDialog used when importing songs from the FRW.
"""
class OldAuthor(BaseModel):
"""
Author model
"""
pass
class OldBook(BaseModel):
"""
Book model
"""
pass
class OldMediaFile(BaseModel):
"""
MediaFile model
"""
pass
class OldSong(BaseModel):
"""
Song model
"""
pass
class OldTopic(BaseModel):
"""
Topic model
"""
pass
# Check the file type
if not self.import_source.endswith('.sqlite'):
self.log_error(self.import_source, translate('SongsPlugin.OpenLPSongImport',
'Not a valid OpenLP 2.0 song database.'))
return
self.import_source = 'sqlite:///%s' % self.import_source
# Load the db file
engine = create_engine(self.import_source)
source_meta = MetaData()
source_meta.reflect(engine)
self.source_session = scoped_session(sessionmaker(bind=engine))
if 'media_files' in list(source_meta.tables.keys()):
has_media_files = True
else:
has_media_files = False
source_authors_table = source_meta.tables['authors']
source_song_books_table = source_meta.tables['song_books']
source_songs_table = source_meta.tables['songs']
source_topics_table = source_meta.tables['topics']
source_authors_songs_table = source_meta.tables['authors_songs']
source_songs_topics_table = source_meta.tables['songs_topics']
source_media_files_songs_table = None
if has_media_files:
source_media_files_table = source_meta.tables['media_files']
source_media_files_songs_table = source_meta.tables.get('media_files_songs')
try:
class_mapper(OldMediaFile)
except UnmappedClassError:
mapper(OldMediaFile, source_media_files_table)
song_props = {
'authors': relation(OldAuthor, backref='songs', secondary=source_authors_songs_table),
'book': relation(OldBook, backref='songs'),
'topics': relation(OldTopic, backref='songs', secondary=source_songs_topics_table)
}
if has_media_files:
if isinstance(source_media_files_songs_table, Table):
song_props['media_files'] = relation(OldMediaFile, backref='songs',
secondary=source_media_files_songs_table)
else:
song_props['media_files'] = \
relation(OldMediaFile, backref='songs',
foreign_keys=[source_media_files_table.c.song_id],
primaryjoin=source_songs_table.c.id == source_media_files_table.c.song_id)
try:
class_mapper(OldAuthor)
except UnmappedClassError:
mapper(OldAuthor, source_authors_table)
try:
class_mapper(OldBook)
except UnmappedClassError:
mapper(OldBook, source_song_books_table)
try:
class_mapper(OldSong)
except UnmappedClassError:
mapper(OldSong, source_songs_table, properties=song_props)
try:
class_mapper(OldTopic)
except UnmappedClassError:
mapper(OldTopic, source_topics_table)
source_songs = self.source_session.query(OldSong).all()
if self.import_wizard:
self.import_wizard.progress_bar.setMaximum(len(source_songs))
for song in source_songs:
new_song = Song()
new_song.title = song.title
if has_media_files and hasattr(song, 'alternate_title'):
new_song.alternate_title = song.alternate_title
else:
old_titles = song.search_title.split('@')
if len(old_titles) > 1:
new_song.alternate_title = old_titles[1]
# Values will be set when cleaning the song.
new_song.search_title = ''
new_song.search_lyrics = ''
new_song.song_number = song.song_number
new_song.lyrics = song.lyrics
new_song.verse_order = song.verse_order
new_song.copyright = song.copyright
new_song.comments = song.comments
new_song.theme_name = song.theme_name
new_song.ccli_number = song.ccli_number
for author in song.authors:
existing_author = self.manager.get_object_filtered(Author, Author.display_name == author.display_name)
if existing_author is None:
existing_author = Author.populate(
first_name=author.first_name,
last_name=author.last_name,
display_name=author.display_name)
new_song.authors.append(existing_author)
if song.book:
existing_song_book = self.manager.get_object_filtered(Book, Book.name == song.book.name)
if existing_song_book is None:
existing_song_book = Book.populate(name=song.book.name, publisher=song.book.publisher)
new_song.book = existing_song_book
if song.topics:
for topic in song.topics:
existing_topic = self.manager.get_object_filtered(Topic, Topic.name == topic.name)
if existing_topic is None:
existing_topic = Topic.populate(name=topic.name)
new_song.topics.append(existing_topic)
if has_media_files:
if song.media_files:
for media_file in song.media_files:
existing_media_file = self.manager.get_object_filtered(
MediaFile, MediaFile.file_name == media_file.file_name)
if existing_media_file:
new_song.media_files.append(existing_media_file)
else:
new_song.media_files.append(MediaFile.populate(file_name=media_file.file_name))
clean_song(self.manager, new_song)
self.manager.save_object(new_song)
if progress_dialog:
progress_dialog.setValue(progress_dialog.value() + 1)
progress_dialog.setLabelText(WizardStrings.ImportingType % new_song.title)
else:
self.import_wizard.increment_progress_bar(WizardStrings.ImportingType % new_song.title)
if self.stop_import_flag:
break
engine.dispose()