[PATCH 1/6] inbox: add ->over method to ease access

[Eric Wong <e@80x24.org>]

One small step towards making installing Xapian optional for v2
and providing more WWW and NNTP functionality without it.
---
 lib/PublicInbox/Inbox.pm | 30 ++++++++++++++++++++----------
 1 file changed, 20 insertions(+), 10 deletions(-)

diff --git a/lib/PublicInbox/Inbox.pm b/lib/PublicInbox/Inbox.pm
index 286555f..e3bc104 100644
--- a/lib/PublicInbox/Inbox.pm
+++ b/lib/PublicInbox/Inbox.pm
@@ -168,12 +168,20 @@ sub mm {
 	};
 }
 
-sub search {
-	my ($self) = @_;
-	$self->{search} ||= eval {
+sub search ($;$) {
+	my ($self, $over_only) = @_;
+	my $srch = $self->{search} ||= eval {
 		_cleanup_later($self);
 		PublicInbox::Search->new($self, $self->{altid});
 	};
+	# TODO: lazily load Xapian
+	# return $srch if $over_only || eval { $srch->xdb };
+	# undef;
+}
+
+sub over ($) {
+	my $srch = search($_[0], 1) or return;
+	$srch->{over_ro};
 }
 
 sub try_cat {
@@ -280,7 +288,7 @@ sub nntp_url {
 
 sub nntp_usable {
 	my ($self) = @_;
-	my $ret = $self->mm && $self->search;
+	my $ret = mm($self) && over($self);
 	$self->{mm} = $self->{search} = undef;
 	$ret;
 }
@@ -322,30 +330,32 @@ sub mid2num($$) {
 
 sub smsg_by_mid ($$) {
 	my ($self, $mid) = @_;
-	my $srch = search($self) or return;
+	my $over = over($self) or return;
 	# favor the Message-ID we used for the NNTP article number:
 	defined(my $num = mid2num($self, $mid)) or return;
-	my $smsg = $srch->lookup_article($num) or return;
+	my $smsg = $over->get_art($num) or return;
 	PublicInbox::SearchMsg::psgi_cull($smsg);
 }
 
 sub msg_by_mid ($$;$) {
 	my ($self, $mid, $ref) = @_;
-	my $srch = search($self) or
+
+	over($self) or
 		return msg_by_path($self, mid2path($mid), $ref);
+
 	my $smsg = smsg_by_mid($self, $mid);
 	$smsg ? msg_by_smsg($self, $smsg, $ref) : undef;
 }
 
 sub recent {
 	my ($self, $opts, $after, $before) = @_;
-	search($self)->{over_ro}->recent($opts, $after, $before);
+	over($self)->recent($opts, $after, $before);
 }
 
 sub modified {
 	my ($self) = @_;
-	if (my $srch = search($self)) {
-		my $msgs = $srch->{over_ro}->recent({limit => 1});
+	if (my $over = over($self)) {
+		my $msgs = $over->recent({limit => 1});
 		if (my $smsg = $msgs->[0]) {
 			return $smsg->{ts};
 		}
-- 
EW