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from common import utils
from models.base import BaseModel
class Artist(BaseModel):
def __init__(self, db, id=None, **kwargs):
self._db = db
if id is not None:
for row in self._db.execute("SELECT * FROM artist WHERE id = ?",
(id,)):
for key in ["id", "name", "sortname", "musicbrainz_artistid"]:
setattr(self, key, row[key])
else:
for (key, value) in kwargs.items():
setattr(self, key, value)
def delete(self):
for album in self.albums:
album.delete()
with self._db.conn:
delete_artist = "DELETE FROM artist WHERE id = ?"
self._db.execute(delete_artist, (self.id,))
delete_track_rel = "DELETE FROM artist_track WHERE artist_id = ?"
self._db.execute(delete_track_rel, (self.id,))
delete_album_rel = "DELETE FROM album_artist WHERE artist_id = ?"
self._db.execute(delete_album_rel, (self.id,))
return True
@property
def db(self):
return self._db
@db.setter
def db(self, db):
self._db = db
@property
def tracks(self):
from models.track import Track
if not hasattr(self, "_tracks"):
setattr(self, "_tracks", [])
for row in self._db.execute("SELECT track.* FROM track INNER "
"JOIN artist_track ON track.id = "
"artist_track.track_id WHERE "
"artist_id = ? ORDER BY name ASC",
(self.id,)):
track = Track(id=row["id"], db=self._db,
tracknumber=row["tracknumber"], name=row["name"],
grouping=row["grouping"],
filename=row["filename"])
self._tracks.append(track)
return self._tracks
@property
def albums(self):
from models.album import Album
if not hasattr(self, "_albums"):
setattr(self, "_albums", [])
for row in self._db.execute("SELECT album.* FROM album INNER "
"JOIN album_artist ON album.id = "
"album_artist.album_id WHERE "
"artist_id = ? ORDER BY date ASC",
(self.id,)):
album = Album(id=row["id"], db=self._db, name=row["name"],
date=row["date"])
self._albums.append(album)
return self._albums
def save(self):
dirty_attributes = {}
# check if the internal dict has been modified
for (attr, value) in self.__dict__.items():
if self.__data[attr] != getattr(self, attr):
dirty_attributes[attr] = value
if len(dirty_attributes) > 0:
set_clause = utils.update_clause_from_dict(dirty_attributes)
dirty_attributes[id] = self.id
sql = " ".join(("UPDATE artist", set_clause, "WHERE id = :id"))
with self._db.conn:
self._db.execute(sql, dirty_attributes)
@classmethod
def search(cls, database, **search_params):
"""Find an artist with the given params
Args:
name: dict, with 'data' and 'operator' keys
sortname: dict, with 'data' and 'operator' keys
musicbrainz_artist_id: dict, with 'data' and 'operator' keys
"""
artists = []
# unpack search params
where_params = {}
value_params = {}
for (attr, value) in search_params.items():
where_params[attr] = value["operator"]
value_params[attr] = value["data"]
where_clause = utils.make_where_clause(where_params)
result = []
if where_clause:
statement = " ".join(("SELECT * FROM artist", where_clause))
result = database.execute(statement, value_params)
else:
result = database.execute("SELECT * FROM artist")
for row in result:
artists.append(
Artist(id=row["id"], db=database, name=row["name"],
sortname=row["sortname"],
musicbrainz_artistid=row["musicbrainz_artistid"])
)
return artists
@classmethod
def all(cls, database, order="sortname", direction="ASC", limit=None,
offset=None):
artists = []
select_string = "SELECT * FROM artist ORDER BY %s %s" % (order,
direction)
if limit is not None and offset is not None:
select_string = " ".join((select_string,
"LIMIT %s OFFSET %s" % (limit, offset)))
result = database.execute(select_string)
for row in result:
artists.append(
Artist(id=row["id"], db=database, name=row["name"],
sortname=row["sortname"],
musicbrainz_artistid=row["musicbrainz_artistid"])
)
return artists
|
