return($self->{tagtree}->used_tags());
}
-sub tag_has_values
+sub expecting_values
{
my($self)=@_;
my $tail=$self->tail();
my $sql="SELECT DISTINCT name FROM tags WHERE parents_id='';";
return($self->{db}->cmd_firstcol($sql));
}
- my $hasvals=$self->tag_has_values();
+ my $hasvals=$self->expecting_values();
my $parent=$self->trailing_tag_parent();
# print "THASVALS: $hasvals\n";
# print "TPARENT: ", (defined($parent)? $parent : "NO"), "\n";
return(@tagnames);
}
-sub tag_values
-{
- my($self, $tagid)=@_;
- my $sql=("SELECT DISTINCT name FROM tags\n" .
- "WHERE parents_id=?");
- my @tags=$self->{db}->cmd_firstcol($sql, $tagid);
- @tags=map { length($_) ? $_ : "NOVALUE"; } @tags;
- return @tags;
-}
-
sub artists
{
my($self)=@_;
sub tags_subselect
{
my($self)=@_;
- my $hasvals=$self->tag_has_values();
+ my $hasvals=$self->expecting_values();
# we need to specially handle a bare /NOT/tag with no other clauses,
# using a simple WHERE id !='tagid' instead of a LEFT JOIN
if($self->{bare_not})
return($sql);
}
-sub tags_subselect_and_not
-{
- my($self,@constraints)=@_;
- my ($tags, $tags_vals, $parent)=$self->constraints_tag_list(@constraints);
- my @tags=@$tags;
- my @tags_vals=@$tags_vals;;
- my $cnt=1;
- my @andclauses=();
- my $sql='';
- for my $tag (@tags)
- {
- if($cnt == 1)
- {
- $sql="\tSELECT fxt" . scalar(@tags) . ".files_id FROM files_x_tags fxt1\n";
- push(@andclauses, "\t\tfxt${cnt}.tags_id=$tag");
- }
- else
- {
- $sql .= ("\tLEFT JOIN files_x_tags fxt$cnt ON fxt" .
- ($cnt-1) . ".files_id=fxt${cnt}.files_id\n");
- push(@andclauses, "\t\tfxt${cnt}.tags_id IS NULL");
- }
- print "AND: @andclauses\n";
- $cnt++;
- }
- if(@andclauses)
- {
- $sql .= "\tWHERE\n\t\t";
- $sql .= join(" AND\n\t\t", @andclauses) . "\n";
- }
- $sql .= "\tGROUP BY fxt". scalar(@tags).".files_id\n";
- return $sql;
-}
-
-
-sub tags_subselect_and
-{
- my($self,@constraints)=@_;
- my ($tags, $tags_vals, $parent)=$self->constraints_tag_list(@constraints);
- my @tags=@$tags;
- my @tags_vals=@$tags_vals;;
- my $cnt=1;
- my @andclauses=();
- my $sql='';
- for my $tag (@tags)
- {
- if($cnt == 1)
- {
- $sql="\tSELECT fxt" . scalar(@tags) . ".files_id FROM files_x_tags fxt1\n";
- }
- else
- {
- $sql .= ("\tINNER JOIN files_x_tags fxt$cnt ON fxt" .
- ($cnt-1) . ".files_id=fxt${cnt}.files_id\n");
- }
- push(@andclauses, "\t\tfxt${cnt}.tags_id = $tag");
- print "AND: @andclauses\n";
- $cnt++;
- }
- if(@andclauses)
- {
- $sql .= "\tWHERE\n\t\t";
- $sql .= join(" AND\n\t\t", @andclauses) . "\n";
- }
- $sql .= "\tGROUP BY fxt". scalar(@tags).".files_id\n";
- return $sql;
-}
-
-sub tags_subselect_or
-{
- my($self,@constraints)=@_;
- my ($tags, $tags_vals, $parent)=$self->constraints_tag_list(@constraints);
- my @tags=@$tags;
- my @tags_vals=@$tags_vals;;
-
- my $sql=("\tSELECT files_x_tags.files_id FROM tags t1\n" .
- "\tINNER JOIN files_x_tags ON t1.id=files_x_tags.tags_id\n");
- my @orclauses=();
- my @andclauses=();
- # FIXME: and / or?
- if(@tags)
- {
- push(@andclauses, "( t1.parents_id=" . (defined($parent) ? $parent : "''") . " )");
- push(@andclauses, "( t1.id IN ( " . join(', ', @tags) ." ) )");
- }
- for my $pair (@tags_vals)
- {
- my($tag, $val)=@$pair;
- push(@orclauses, "( t1.parents_id=$tag AND t1.id=$val )");
- }
-# push(@andclauses, "( t1.parents_id=" . (defined($parent) ? $parent : "''") . " )");
- if(@orclauses)
- {
- push(@andclauses, join("\n\t\tOR ", @orclauses));
- }
- if(@andclauses)
- {
- $sql .= "\tWHERE\n\t\t";
- $sql .= join("\n\t\tAND ", @andclauses) . "\n";
- }
- $sql .= "\tGROUP BY files_x_tags.files_id\n";
- return $sql;
-}
-
sub constraints_tag_list
{
my($self, @constraints)=@_;
return(\@tags, \@tags_vals, $lasttag);
}
-
-sub bare_tags
-{
- my($self)=@_;
- my $sql=("SELECT tags.name FROM tags\n" .
- "WHERE tags.parents_id=''\n" .
- "GROUP BY tags.name\n");
- my @names=$self->{db}->cmd_firstcol($sql);
- return (@names);
-}
-
-sub tags_with_values
-{
- # FIXME: only shows one level of tag depth
- my($self)=@_;
- my $sql=("SELECT p.name, t.name FROM tags t\n" .
- "INNER JOIN tags p ON t.parents_id=p.id\n" .
- "GROUP BY p.name, t.name\n");
-# print "SQL: $sql\n";
- my $result=$self->{db}->cmd_rows($sql);
- my $tags={};
- for my $pair (@$result)
- {
- push(@{$tags->{$pair->[0]}}, $pair->[1]);
- }
- return $tags;
-}
-
-
sub filter
{
my($self, @dirs)=@_;
return 1;
}
-sub tagname_has_values
-{
- my($self, $name)=@_;
- my $id=$self->{db}->lookup_id("tags", $name);
- return 0 unless($id);
- return $self->{db}->tag_has_values($id);
-
-}
-
sub dir_is_special
{
my($self, $dir)=@_;
- if((grep { $_ eq $dir; }
- qw(AND OR NOT), $PATH_ALLTRACKS, $PATH_NOARTIST, $PATH_NOALBUM) ||
- ($self->tagname_has_values($dir)))
+ my $id=$self->{db}->lookup_id("tags", $dir);
+ if((grep { $_ eq $dir; } (qw(AND OR NOT), $PATH_ALLTRACKS,
+ $PATH_NOARTIST, $PATH_NOALBUM)) ||
+ ($id && $self->{db}->tag_has_values($id)))
{
return 1;
}