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-rw-r--r--lib/PublicInbox/ExtSearch.pm40
-rw-r--r--lib/PublicInbox/Search.pm4
2 files changed, 42 insertions, 2 deletions
diff --git a/lib/PublicInbox/ExtSearch.pm b/lib/PublicInbox/ExtSearch.pm
new file mode 100644
index 00000000..9bbe7857
--- /dev/null
+++ b/lib/PublicInbox/ExtSearch.pm
@@ -0,0 +1,40 @@
+# Copyright (C) 2020 all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+
+# Read-only external (detached) index for cross inbox search.
+# This is a read-only counterpart to PublicInbox::ExtSearchIdx
+package PublicInbox::ExtSearch;
+use strict;
+use v5.10.1;
+use PublicInbox::Over;
+
+# for ->reopen, ->mset, ->mset_to_artnums
+use parent qw(PublicInbox::Search);
+
+sub new {
+        my (undef, $topdir) = @_;
+        bless {
+                topdir => $topdir,
+                # xpfx => 'ei15'
+                xpfx => "$topdir/ei".PublicInbox::Search::SCHEMA_VERSION
+        }, __PACKAGE__;
+}
+
+# overrides PublicInbox::Search::_xdb
+sub _xdb {
+        my ($self) = @_;
+        $self->_xdb_sharded($self->{xpfx});
+}
+
+# same as per-inbox ->over, for now...
+sub over {
+        my ($self) = @_;
+        $self->{over} //= PublicInbox::Over->new("$self->{xpfx}/over.sqlite3");
+}
+
+sub git {
+        my ($self) = @_;
+        $self->{git} //= PublicInbox::Git->new("$self->{topdir}/ALL.git");
+}
+
+1;
diff --git a/lib/PublicInbox/Search.pm b/lib/PublicInbox/Search.pm
index 6346d788..5a57657f 100644
--- a/lib/PublicInbox/Search.pm
+++ b/lib/PublicInbox/Search.pm
@@ -245,9 +245,9 @@ sub mset_to_artnums {
 
 sub xdb ($) {
         my ($self) = @_;
-        $self->{xdb} ||= do {
+        $self->{xdb} //= do {
                 load_xapian();
-                _xdb($self);
+                $self->_xdb;
         };
 }