$self->meta_accessor('last_commit', $commit);
}
+# v2 uses this to keep track of how up-to-date Xapian is
+# old versions may be automatically GC'ed away in the future,
+# but it's a trivial amount of storage.
+sub last_commit_xap {
+ my ($self, $version, $i, $commit) = @_;
+ $self->meta_accessor("last_xap$version-$i", $commit);
+}
+
sub created_at {
my ($self, $second) = @_;
$self->meta_accessor('created_at', $second);
sub minmax {
my ($self) = @_;
my $dbh = $self->{dbh};
- my $sth = $self->{num_minmax} ||=
- $dbh->prepare('SELECT MIN(num),MAX(num) FROM msgmap');
+ # breaking MIN and MAX into separate queries speeds up from 250ms
+ # to around 700us with 2.7million messages.
+ my $sth = $dbh->prepare_cached('SELECT MIN(num) FROM msgmap', undef, 1);
$sth->execute;
- $sth->fetchrow_array;
+ my $min = $sth->fetchrow_array;
+ $sth = $dbh->prepare_cached('SELECT MAX(num) FROM msgmap', undef, 1);
+ $sth->execute;
+ ($min, $sth->fetchrow_array);
}
sub mid_prefixes {
}
# used by NNTP.pm
-sub id_batch {
- my ($self, $num, $cb) = @_;
+sub ids_after {
+ my ($self, $num) = @_;
+ my $ids = $self->{dbh}->selectcol_arrayref(<<'', undef, $$num);
+SELECT num FROM msgmap WHERE num > ?
+ORDER BY num ASC LIMIT 1000
+
+ $$num = $ids->[-1] if @$ids;
+ $ids;
+}
+
+sub msg_range {
+ my ($self, $beg, $end) = @_;
my $dbh = $self->{dbh};
- my $sth = $dbh->prepare('SELECT num FROM msgmap WHERE num > ? '.
- 'ORDER BY num ASC LIMIT 1000');
- $sth->execute($num);
- my $ary = $sth->fetchall_arrayref;
- @$ary = map { $_->[0] } @$ary;
- my $nr = scalar @$ary;
- $cb->($ary) if $nr;
- $nr;
+ my $attr = { Columns => [] };
+ my $mids = $dbh->selectall_arrayref(<<'', $attr, $$beg, $end);
+SELECT num,mid FROM msgmap WHERE num >= ? AND num <= ?
+ORDER BY num ASC
+
+ $$beg = $mids->[-1]->[0] + 1 if @$mids;
+ $mids
}
# only used for mapping external serial numbers (e.g. articles from gmane)