def match_item(item_id):
'''This endpoint is passed a set of mbids, and an item.
It then checks if the set matches the current match for the item;
if so, it does nothing. If not, the submitted match becomes the
new match, superseding the former match. As a precaution, empty
sets will be ignored unless a special extra parameter is set.
The item ID should be passed in the URL; the rest in POSTed JSON.
'''
is_mbid = re.compile('^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$')
request_json = request.get_json()
empty = request_json.get('empty', False)
mbids = [mbid.lower() for mbid in request_json.get('matches')]
if len(mbids) == 0 and not empty:
return jsonify({'error': 'No matches provided.'})
if len([True for mbid in mbids if (is_mbid.match(mbid) is None)]) > 0:
return jsonify({'error': 'MBIDs improperly formatted.'})
existing = RawMatch.get_by_item(item_id, superseded=False)
if len(existing) > 1:
raise Exception('Why are there %d non-superseded matches for item %d?' % (len(existing), item_id))
elif len(existing) == 1:
if set(mbids) == set([entity.entity_mbid for entity in existing[0].entities]):
return jsonify({'error': 'Matches not changed'})
entities = Entity.query.filter(Entity.mbid.in_(mbids)).all()
if len(entities) != len(mbids):
return jsonify({'error': 'Not all entities were found in the DB'})
match = RawMatch.match_item(item_id, current_user.id, entities)
db.session.commit()
return jsonify(match=match.to_dict())
def test_match_item(self):
match = RawMatch.match_item(item_id=self.item.id, editor_name=self.editor.name,
entities=[self.entity_1, self.entity_2])
self.assertEqual(match.item.id, self.item.id)
self.assertEqual(match.editor, self.editor)