This prevents us from pushing the same file multiple times to the task
list, most likely in case we were to fail early during the discovery/parsing process

This is required if a service needs to fetch something from the
database, as we will mostly clear it after flush, causing dangling
reference to be held.

aka: Replace place holder comment by the actual code.

We were trying to re-create a file during each resume, which could only
work if the task got interrupted during the extraction step

Otherwise there is no way to enforce a rescan of failed tasks, or no
easy/efficient way to force a full rescan

Clarify the difference between nbAlbums & albums().size()

As described and asserted a few lines above, the candidate album
AlbumArtist can't be nullptr

This is now handled by a specific task table in DB

We use this for entities ID which are always 64bits integers

All unit tests used to start the notifier, while it's only needed for a
single set of tests

We never run the parser from unit tests

Until VLC handles those without lua, we can't do much with those files

Soomin Lee authored Aug 04, 2017 and Hugo Beauzée-Luyssen committed Jan 23, 2018

Signed-off-by: Hugo Beauzée-Luyssen <hugo@beauzee.fr>

As opposed to the previous strategy, which was requiring every artist to
have at least an album

This doesn't contain the migration code as there is more changes to come
into the Artist table, and those change would basically roll back most
of this commit associated migration code

So that we don't break the logic for released versions