my @ids=();
my $main_sql_start=("SELECT t2.name\n" .
- "\tFROM (SELECT files_id FROM tags t1\n" .
- "\t\tINNER JOIN files_x_tags ON t1.id=files_x_tags.tags_id\n" .
- "\t\tWHERE t1.id in\n\t\t\t(");
- my $main_sql_mid=(")\n\t\t) AS subselect\n" .
- "\tINNER JOIN files_x_tags ON subselect.files_id=files_x_tags.files_id\n" .
- "\tINNER JOIN tags t2 ON files_x_tags.tags_id=t2.id\n" .
- "\tWHERE t2.id NOT IN (");
- my $main_sql_end=")\n\tGROUP BY t2.name;";
+ "\tFROM (\n" .
+ $self->tags_subselect(@constraints) .
+ ") AS subselect\n" .
+ "INNER JOIN files_x_tags ON subselect.files_id=files_x_tags.files_id\n" .
+ "INNER JOIN tags t2 ON files_x_tags.tags_id=t2.id\n" .
+ "WHERE t2.id NOT IN (");
+ my $main_sql_end=")\nGROUP BY t2.name;";
+ # FIXME: generalise more?
+
while(my $constraint=shift @constraints)
{
my $cid=$constraint->{id};
@ids = map( { "\"$_\""; } grep { defined; } @ids) unless($self->{postgres});
my $tagstr=join(", ", @ids);
my $sql = ($main_sql_start . $tagstr .
- $main_sql_mid . $tagstr .
$main_sql_end);
print "SQL: $sql\n";
my $result=$self->cmd_rows($sql);
return(map { $_->[0]; } @$tags);
}
my @ids=();
- my $main_sql_start=("SELECT artists.name\n" .
- "\tFROM (SELECT files_id FROM tags\n" .
- "\t\tINNER JOIN files_x_tags ON tags.id=files_x_tags.tags_id\n" .
- "\t\tWHERE tags.id in\n\t\t\t(");
- my $main_sql_end=(")\n\t\t) AS subselect\n" .
- "\tINNER JOIN files ON subselect.files_id=files.id\n" .
- "\tINNER JOIN artists ON files.artists_id=artists.id\n" .
- "\n\tGROUP BY artists.name;");
- while(my $constraint=shift @constraints)
- {
- my $cid=$constraint->{id};
- push(@ids, $cid);
- }
- @ids = map( { "\"$_\""; } grep { defined; } @ids) unless($self->{postgres});
- my $tagstr=join(", ", @ids);
- my $sql = ($main_sql_start . $tagstr .
- $main_sql_end);
+ my $sql=("SELECT artists.name FROM (\n" .
+ $self->tags_subselect(@constraints) .
+ ") AS subselect\n" .
+ "INNER JOIN files ON subselect.files_id=files.id\n" .
+ "INNER JOIN artists ON files.artists_id=artists.id\n" .
+ "GROUP BY artists.name;");
print "SQL: $sql\n";
my $result=$self->cmd_rows($sql);
my @tagnames=map { $_->[0]; } @$result;
{
return $self->artist_albums($constraints[$#constraints]->{id});
}
- my $main_sql_start=("SELECT albums.name\n" .
- "\tFROM (SELECT files_id FROM tags\n" .
- "\t\tINNER JOIN files_x_tags ON tags.id=files_x_tags.tags_id\n" .
- "\t\tWHERE tags.id in\n\t\t\t(");
- my $main_sql_end=(")\n\t\t) AS subselect\n" .
- "\tINNER JOIN files ON subselect.files_id=files.id\n" .
- "\tINNER JOIN albums ON files.albums_id=albums.id\n" .
- "\n\tGROUP BY albums.name;");
- while(my $constraint=shift @constraints)
- {
- my $cid=$constraint->{id};
- push(@ids, $cid);
- }
- @ids = map( { "\"$_\""; } grep { defined; } @ids) unless($self->{postgres});
- my $str=join(", ", @ids);
- my $sql = ($main_sql_start . $str .
- $main_sql_end);
+ my $sql=("SELECT albums.name\n" .
+ "\tFROM (\n" .
+ $self->tags_subselect(@constraints) .
+ "\t) AS subselect\n" .
+ "INNER JOIN files ON subselect.files_id=files.id\n" .
+ "INNER JOIN albums ON files.albums_id=albums.id\n" .
+ "GROUP BY albums.name;");
my $result=$self->cmd_rows($sql);
my @names=map { $_->[0]; } @$result;
print "ALBUMS: ", join(', ', @names), "\n";
return $self->album_tracks($artist_id, $constraints[$#constraints]->{id});
}
- my $main_sql_start=("SELECT files.name\n" .
- "\tFROM (SELECT files_id FROM tags\n" .
- "\t\tINNER JOIN files_x_tags ON tags.id=files_x_tags.tags_id\n" .
- "\t\tWHERE tags.id in\n\t\t\t(");
- my $main_sql_end=(")\n\t\t) AS subselect\n" .
- "\tINNER JOIN files ON files.id=subselect.files_id" .
- "\tGROUP BY files.name;");
- my @ids;
- while(my $constraint=shift @constraints)
- {
- my $cid=$constraint->{id};
- push(@ids, $cid);
- }
- @ids = map( { "\"$_\""; } grep { defined; } @ids) unless($self->{postgres});
- my $str=join(", ", @ids);
- my $sql = ($main_sql_start . $str .
- $main_sql_end);
+ my $sql=("SELECT files.name\n" .
+ "\tFROM (\n" .
+ $self->tags_subselect(@constraints) .
+ "\t) AS subselect\n" .
+ "INNER JOIN files ON files.id=subselect.files_id\n" .
+ "GROUP BY files.name;");
print "SQL: $sql\n";
my $result=$self->cmd_rows($sql);
my @names=map { $_->[0]; } @$result;
die("DB::filename: unhandled case\n"); #FIXME
}
+sub tags_subselect
+{
+ my($self,@constraints)=@_;
+ my @ids = grep { defined; } map { $_->{id}; } @constraints;
+ @ids=map( { "\"$_\""; } @ids) unless($self->{postgres});
+ my $sql=("\tSELECT files_id FROM tags t1\n" .
+ "\tINNER JOIN files_x_tags ON t1.id=files_x_tags.tags_id\n" .
+ "\tWHERE t1.id IN (\n\t\t" .
+ join(', ', @ids) .
+ "\n\t)\n");
+ return $sql;
+}
+
+
sub relativise
{
my($self, $path, $name, $mountpoint, $id3fs_path)=@_;