#!perl -w
# Copyright (C) 2020-2021 all contributors
# License: AGPL-3.0+
use strict;
use Test::More;
use PublicInbox::TestCommon;
use PublicInbox::Config;
use PublicInbox::InboxWritable;
use Fcntl qw(:seek);
require_git(2.6);
require_mods(qw(json DBD::SQLite Search::Xapian));
require PublicInbox::Search;
use_ok 'PublicInbox::ExtSearch';
use_ok 'PublicInbox::ExtSearchIdx';
use_ok 'PublicInbox::OverIdx';
my $sock = tcp_server();
my $host_port = tcp_host_port($sock);
my ($home, $for_destroy) = tmpdir();
local $ENV{HOME} = $home;
mkdir "$home/.public-inbox" or BAIL_OUT $!;
my $cfg_path = "$home/.public-inbox/config";
open my $fh, '>', $cfg_path or BAIL_OUT $!;
print $fh < $v2addr };
my $eml = eml_load('t/utf8.eml');
$eml->header_set('List-Id', '');
open($fh, '+>', undef) or BAIL_OUT $!;
$fh->autoflush(1);
print $fh $eml->as_string or BAIL_OUT $!;
seek($fh, 0, SEEK_SET) or BAIL_OUT $!;
run_script(['-mda', '--no-precheck'], $env, { 0 => $fh }) or BAIL_OUT '-mda';
ok(run_script([qw(-init -V1 v1test --newsgroup v1.example), "$home/v1test",
'http://example.com/v1test', $v1addr ]), 'v1test init');
$eml->header_set('List-Id', '');
seek($fh, 0, SEEK_SET) or BAIL_OUT $!;
truncate($fh, 0) or BAIL_OUT $!;
print $fh $eml->as_string or BAIL_OUT $!;
seek($fh, 0, SEEK_SET) or BAIL_OUT $!;
$env = { ORIGINAL_RECIPIENT => $v1addr };
run_script(['-mda', '--no-precheck'], $env, { 0 => $fh }) or BAIL_OUT '-mda';
run_script([qw(-index -Lbasic), "$home/v1test"]) or BAIL_OUT "index $?";
ok(run_script([qw(-extindex --all), "$home/extindex"]), 'extindex init');
{
my $es = PublicInbox::ExtSearch->new("$home/extindex");
ok($es->has_threadid, '->has_threadid');
}
if ('with boost') {
xsys([qw(git config publicinbox.v1test.boost), 10],
{ GIT_CONFIG => $cfg_path });
ok(run_script([qw(-extindex --all), "$home/extindex-b"]),
'extindex init with boost');
my $es = PublicInbox::ExtSearch->new("$home/extindex-b");
my $smsg = $es->over->get_art(1);
ok($smsg, 'got first article');
my $xref3 = $es->over->get_xref3($smsg->{num});
my @v1 = grep(/\Av1/, @$xref3);
my @v2 = grep(/\Av2/, @$xref3);
like($v1[0], qr/\Av1\.example.*?\b\Q$smsg->{blob}\E\b/,
'smsg->{blob} respected boost');
is(scalar(@$xref3), 2, 'only to entries');
undef $es;
xsys([qw(git config publicinbox.v2test.boost), 20],
{ GIT_CONFIG => $cfg_path });
ok(run_script([qw(-extindex --all --reindex), "$home/extindex-b"]),
'extindex --reindex with altered boost');
$es = PublicInbox::ExtSearch->new("$home/extindex-b");
$smsg = $es->over->get_art(1);
like($v2[0], qr/\Av2\.example.*?\b\Q$smsg->{blob}\E\b/,
'smsg->{blob} respects boost after reindex');
# high boost added later
my $b2 = "$home/extindex-bb";
ok(run_script([qw(-extindex), $b2, "$home/v1test"]),
'extindex with low boost inbox only');
ok(run_script([qw(-extindex), $b2, "$home/v2test"]),
'extindex with high boost inbox only');
$es = PublicInbox::ExtSearch->new($b2);
$smsg = $es->over->get_art(1);
$xref3 = $es->over->get_xref3($smsg->{num});
like($v2[0], qr/\Av2\.example.*?\b\Q$smsg->{blob}\E\b/,
'smsg->{blob} respected boost across 2 index runs');
xsys([qw(git config --unset publicinbox.v1test.boost)],
{ GIT_CONFIG => $cfg_path });
xsys([qw(git config --unset publicinbox.v2test.boost)],
{ GIT_CONFIG => $cfg_path });
}
{ # TODO: -extindex should write this to config
open $fh, '>>', $cfg_path or BAIL_OUT $!;
print $fh <ALL
[extindex "all"]
topdir = $home/extindex
EOF
close $fh or BAIL_OUT $!;
my $pi_cfg = PublicInbox::Config->new;
$pi_cfg->fill_all;
ok($pi_cfg->ALL, '->ALL');
my $ibx = $pi_cfg->{-by_newsgroup}->{'v2.example'};
my $ret = $pi_cfg->ALL->nntp_xref_for($ibx, $ibx->over->get_art(1));
is_deeply($ret, { 'v1.example' => 1, 'v2.example' => 1 },
'->nntp_xref_for');
}
SKIP: {
require_mods(qw(Net::NNTP), 1);
my ($out, $err) = ("$home/nntpd.out.log", "$home/nntpd.err.log");
my $cmd = [ '-nntpd', '-W0', "--stdout=$out", "--stderr=$err" ];
my $td = start_script($cmd, undef, { 3 => $sock });
my $n = Net::NNTP->new($host_port);
my @xp = $n->xpath('');
is_deeply(\@xp, [ qw(v1.example/1 v2.example/1) ]);
$n->group('v1.example');
my $res = $n->head(1);
@$res = grep(/^Xref: /, @$res);
like($res->[0], qr/ v1\.example:1 v2\.example:1/, 'nntp_xref works');
}
my $es = PublicInbox::ExtSearch->new("$home/extindex");
{
my $smsg = $es->over->get_art(1);
ok($smsg, 'got first article');
is($es->over->get_art(2), undef, 'only one added');
my $xref3 = $es->over->get_xref3(1);
like($xref3->[0], qr/\A\Qv2.example\E:1:/, 'order preserved 1');
like($xref3->[1], qr/\A\Qv1.example\E:1:/, 'order preserved 2');
is(scalar(@$xref3), 2, 'only to entries');
}
if ('inbox edited') {
my ($in, $out, $err);
$in = $out = $err = '';
my $opt = { 0 => \$in, 1 => \$out, 2 => \$err };
my $env = { MAIL_EDITOR => "$^X -i -p -e 's/test message/BEST MSG/'" };
my $cmd = [ qw(-edit -Ft/utf8.eml), "$home/v2test" ];
ok(run_script($cmd, $env, $opt), '-edit');
ok(run_script([qw(-extindex --all), "$home/extindex"], undef, $opt),
'extindex again');
like($err, qr/discontiguous range/, 'warned about discontiguous range');
my $msg1 = $es->over->get_art(1) or BAIL_OUT 'msg1 missing';
my $msg2 = $es->over->get_art(2) or BAIL_OUT 'msg2 missing';
is($msg1->{mid}, $msg2->{mid}, 'edited message indexed');
isnt($msg1->{blob}, $msg2->{blob}, 'blobs differ');
my $eml2 = $es->smsg_eml($msg2);
like($eml2->body, qr/BEST MSG/, 'edited body in #2');
unlike($eml2->body, qr/test message/, 'old body discarded in #2');
my $eml1 = $es->smsg_eml($msg1);
like($eml1->body, qr/test message/, 'original body in #1');
my $x1 = $es->over->get_xref3(1);
my $x2 = $es->over->get_xref3(2);
is(scalar(@$x1), 1, 'original only has one xref3');
is(scalar(@$x2), 1, 'new message has one xref3');
isnt($x1->[0], $x2->[0], 'xref3 differs');
my $mset = $es->mset('b:"BEST MSG"');
is($mset->size, 1, 'new message found');
$mset = $es->mset('b:"test message"');
is($mset->size, 1, 'old message found');
delete @$es{qw(git over xdb qp)}; # fork preparation
my $pi_cfg = PublicInbox::Config->new;
$pi_cfg->fill_all;
is(scalar($pi_cfg->ALL->mset('s:Testing')->items), 2,
'2 results in ->ALL');
my $res = {};
my $nr = 0;
$pi_cfg->each_inbox(sub {
$nr++;
my ($ibx) = @_;
local $SIG{__WARN__} = sub {}; # FIXME support --reindex
my $mset = $ibx->isrch->mset('s:Testing');
$res->{$ibx->eidx_key} = $ibx->isrch->mset_to_smsg($ibx, $mset);
});
is($nr, 2, 'two inboxes');
my $exp = {};
for my $v (qw(v1 v2)) {
my $ibx = $pi_cfg->lookup_newsgroup("$v.example");
my $smsg = $ibx->over->get_art(1);
$smsg->psgi_cull;
$exp->{"$v.example"} = [ $smsg ];
}
is_deeply($res, $exp, 'isearch limited results');
$pi_cfg = $res = $exp = undef;
open my $rmfh, '+>', undef or BAIL_OUT $!;
$rmfh->autoflush(1);
print $rmfh $eml2->as_string or BAIL_OUT $!;
seek($rmfh, 0, SEEK_SET) or BAIL_OUT $!;
$opt->{0} = $rmfh;
ok(run_script([qw(-learn rm --all)], undef, $opt), '-learn rm');
ok(run_script([qw(-extindex --all), "$home/extindex"], undef, undef),
'extindex after rm');
is($es->over->get_art(2), undef, 'doc #2 gone');
$mset = $es->mset('b:"BEST MSG"');
is($mset->size, 0, 'new message gone');
}
my $misc = $es->misc;
my @it = $misc->mset('')->items;
is(scalar(@it), 2, 'two inboxes');
like($it[0]->get_document->get_data, qr/v2test/, 'docdata matched v2');
like($it[1]->get_document->get_data, qr/v1test/, 'docdata matched v1');
my $cfg = PublicInbox::Config->new;
my $schema_version = PublicInbox::Search::SCHEMA_VERSION();
my $f = "$home/extindex/ei$schema_version/over.sqlite3";
my $oidx = PublicInbox::OverIdx->new($f);
if ('inject w/o indexing') {
use PublicInbox::Import;
my $v1ibx = $cfg->lookup_name('v1test');
my $last_v1_commit = $v1ibx->mm->last_commit;
my $v2ibx = $cfg->lookup_name('v2test');
my $last_v2_commit = $v2ibx->mm->last_commit_xap($schema_version, 0);
my $git0 = PublicInbox::Git->new("$v2ibx->{inboxdir}/git/0.git");
chomp(my $cmt = $git0->qx(qw(rev-parse HEAD^0)));
is($last_v2_commit, $cmt, 'v2 index up-to-date');
my $v2im = PublicInbox::Import->new($git0, undef, undef, $v2ibx);
$v2im->{lock_path} = undef;
$v2im->{path_type} = 'v2';
$v2im->add(eml_load('t/mda-mime.eml'));
$v2im->done;
chomp(my $tip = $git0->qx(qw(rev-parse HEAD^0)));
isnt($tip, $cmt, '0.git v2 updated');
# inject a message w/o updating index
rename("$home/v1test/public-inbox", "$home/v1test/skip-index") or
BAIL_OUT $!;
open(my $eh, '<', 't/iso-2202-jp.eml') or BAIL_OUT $!;
run_script(['-mda', '--no-precheck'], $env, { 0 => $eh}) or
BAIL_OUT '-mda';
rename("$home/v1test/skip-index", "$home/v1test/public-inbox") or
BAIL_OUT $!;
my ($in, $out, $err);
$in = $out = $err = '';
my $opt = { 0 => \$in, 1 => \$out, 2 => \$err };
ok(run_script([qw(-extindex -v -v --all), "$home/extindex"],
undef, undef), 'extindex noop');
$es->{xdb}->reopen;
my $mset = $es->mset('mid:199707281508.AAA24167@hoyogw.example');
is($mset->size, 0, 'did not attempt to index unindexed v1 message');
$mset = $es->mset('mid:multipart-html-sucks@11');
is($mset->size, 0, 'did not attempt to index unindexed v2 message');
ok(run_script([qw(-index --all)]), 'indexed v1 and v2 inboxes');
isnt($v1ibx->mm->last_commit, $last_v1_commit, '-index v1 worked');
isnt($v2ibx->mm->last_commit_xap($schema_version, 0),
$last_v2_commit, '-index v2 worked');
ok(run_script([qw(-extindex --all), "$home/extindex"]),
'extindex updates');
$es->{xdb}->reopen;
$mset = $es->mset('mid:199707281508.AAA24167@hoyogw.example');
is($mset->size, 1, 'got v1 message');
$mset = $es->mset('mid:multipart-html-sucks@11');
is($mset->size, 1, 'got v2 message');
}
if ('reindex catches missed messages') {
my $v2ibx = $cfg->lookup_name('v2test');
$v2ibx->{-no_fsync} = 1;
my $im = PublicInbox::InboxWritable->new($v2ibx)->importer(0);
my $cmt_a = $v2ibx->mm->last_commit_xap($schema_version, 0);
my $eml = eml_load('t/data/0001.patch');
$im->add($eml);
$im->done;
my $cmt_b = $v2ibx->mm->last_commit_xap($schema_version, 0);
isnt($cmt_a, $cmt_b, 'v2 0.git HEAD updated');
$oidx->dbh;
my $uv = $v2ibx->uidvalidity;
my $lc_key = "lc-v2:v2.example//$uv;0";
is($oidx->eidx_meta($lc_key, $cmt_b), $cmt_a,
'update lc-v2 meta, old is as expected');
my $max = $oidx->max;
$oidx->dbh_close;
ok(run_script([qw(-extindex), "$home/extindex", $v2ibx->{inboxdir}]),
'-extindex noop');
is($oidx->max, $max, '->max unchanged');
is($oidx->eidx_meta($lc_key), $cmt_b, 'lc-v2 unchanged');
$oidx->dbh_close;
my $opt = { 2 => \(my $err = '') };
ok(run_script([qw(-extindex --reindex), "$home/extindex",
$v2ibx->{inboxdir}], undef, $opt),
'--reindex for unseen');
is($oidx->max, $max + 1, '->max bumped');
is($oidx->eidx_meta($lc_key), $cmt_b, 'lc-v2 stays unchanged');
my @err = split(/^/, $err);
is(scalar(@err), 1, 'only one warning') or diag "err=$err";
like($err[0], qr/I: reindex_unseen/, 'got reindex_unseen message');
my $new = $oidx->get_art($max + 1);
is($new->{subject}, $eml->header('Subject'), 'new message added');
$es->{xdb}->reopen;
my $mset = $es->mset("mid:$new->{mid}");
is($mset->size, 1, 'previously unseen, now indexed in Xapian');
ok($im->remove($eml), 'remove new message from v2 inbox');
$im->done;
my $cmt_c = $v2ibx->mm->last_commit_xap($schema_version, 0);
is($oidx->eidx_meta($lc_key, $cmt_c), $cmt_b,
'bump lc-v2 meta again to skip v2 remove');
$err = '';
$oidx->dbh_close;
ok(run_script([qw(-extindex --reindex), "$home/extindex",
$v2ibx->{inboxdir}], undef, $opt),
'--reindex for stale');
@err = split(/^/, $err);
is(scalar(@err), 1, 'only one warning') or diag "err=$err";
like($err[0], qr/\(#$new->{num}\): stale/, 'got stale message warning');
is($oidx->get_art($new->{num}), undef,
'stale message gone from over');
is_deeply($oidx->get_xref3($new->{num}), [],
'stale message has no xref3');
$es->{xdb}->reopen;
$mset = $es->mset("mid:$new->{mid}");
is($mset->size, 0, 'stale mid gone Xapian');
ok(run_script([qw(-extindex --reindex --all --fast), "$home/extindex"],
undef, $opt), '--reindex w/ --fast');
ok(!run_script([qw(-extindex --all --fast), "$home/extindex"],
undef, $opt), '--fast alone makes no sense');
}
if ('reindex catches content bifurcation') {
use PublicInbox::MID qw(mids);
my $v2ibx = $cfg->lookup_name('v2test');
$v2ibx->{-no_fsync} = 1;
my $im = PublicInbox::InboxWritable->new($v2ibx)->importer(0);
my $eml = eml_load('t/data/message_embed.eml');
my $cmt_a = $v2ibx->mm->last_commit_xap($schema_version, 0);
$im->add($eml);
$im->done;
my $cmt_b = $v2ibx->mm->last_commit_xap($schema_version, 0);
my $uv = $v2ibx->uidvalidity;
my $lc_key = "lc-v2:v2.example//$uv;0";
$oidx->dbh;
is($oidx->eidx_meta($lc_key, $cmt_b), $cmt_a,
'update lc-v2 meta, old is as expected');
my $mid = mids($eml)->[0];
my $smsg = $v2ibx->over->next_by_mid($mid, \(my $id), \(my $prev));
my $oldmax = $oidx->max;
my $x3_orig = $oidx->get_xref3(3);
is(scalar(@$x3_orig), 1, '#3 has one xref');
$oidx->add_xref3(3, $smsg->{num}, $smsg->{blob}, 'v2.example');
my $x3 = $oidx->get_xref3(3);
is(scalar(@$x3), 2, 'injected xref3');
$oidx->commit_lazy;
my $opt = { 2 => \(my $err = '') };
ok(run_script([qw(-extindex --all), "$home/extindex"], undef, $opt),
'extindex --all is noop');
is($err, '', 'no warnings in index');
$oidx->dbh;
is($oidx->max, $oldmax, 'oidx->max unchanged');
$oidx->dbh_close;
ok(run_script([qw(-extindex --reindex --all), "$home/extindex"],
undef, $opt), 'extindex --reindex') or diag explain($opt);
$oidx->dbh;
ok($oidx->max > $oldmax, 'oidx->max bumped');
like($err, qr/split into 2 due to deduplication change/,
'bifurcation noted');
my $added = $oidx->get_art($oidx->max);
is($added->{blob}, $smsg->{blob}, 'new blob indexed');
is_deeply(["v2.example:$smsg->{num}:$smsg->{blob}"],
$oidx->get_xref3($added->{num}),
'xref3 corrected for bifurcated message');
is_deeply($oidx->get_xref3(3), $x3_orig, 'xref3 restored for #3');
}
if ('--reindex --rethread') {
my $before = $oidx->dbh->selectrow_array(<<'');
SELECT MAX(tid) FROM over WHERE num > 0
my $opt = {};
ok(run_script([qw(-extindex --reindex --rethread --all),
"$home/extindex"], undef, $opt),
'--rethread');
my $after = $oidx->dbh->selectrow_array(<<'');
SELECT MIN(tid) FROM over WHERE num > 0
# actual rethread logic is identical to v1/v2 and tested elsewhere
ok($after > $before, '--rethread updates MIN(tid)');
}
if ('remove v1test and test gc') {
xsys([qw(git config --unset publicinbox.v1test.inboxdir)],
{ GIT_CONFIG => $cfg_path });
my $opt = { 2 => \(my $err = '') };
ok(run_script([qw(-extindex --gc), "$home/extindex"], undef, $opt),
'extindex --gc');
like($err, qr/^I: remove #1 v1\.example /ms, 'removed v1 message');
is(scalar(grep(!/^I:/, split(/^/m, $err))), 0,
'no non-informational messages');
$misc->{xdb}->reopen;
@it = $misc->mset('')->items;
is(scalar(@it), 1, 'only one inbox left');
}
if ('dedupe + dry-run') {
my @cmd = ('-extindex', "$home/extindex");
my $opt = { 2 => \(my $err = '') };
ok(run_script([@cmd, '--dedupe'], undef, $opt), '--dedupe');
ok(run_script([@cmd, qw(--dedupe --dry-run)], undef, $opt),
'--dry-run --dedupe');
is $err, '', 'no errors';
ok(!run_script([@cmd, qw(--dry-run)], undef, $opt),
'--dry-run alone fails');
}
# chmod 0755, $home or xbail "chmod: $!";
for my $j (1, 3, 6) {
my $o = { 2 => \(my $err = '') };
my $d = "$home/extindex-j$j";
ok(run_script(['-extindex', "-j$j", '--all', $d], undef, $o),
"init with -j$j");
my $max = $j - 2;
$max = 0 if $max < 0;
my @dirs = glob("$d/ei*/?");
like($dirs[-1], qr!/ei[0-9]+/$max\z!, '-j works');
}
SKIP: {
my $d = "$home/extindex-j1";
my $es = PublicInbox::ExtSearch->new($d);
ok(my $nresult0 = $es->mset('z:0..')->size, 'got results');
ok(ref($es->{xdb}), '{xdb} created');
my $nshards1 = $es->{nshard};
is($nshards1, 1, 'correct shard count');
my @ei_dir = glob("$d/ei*/");
chmod 0755, $ei_dir[0] or xbail "chmod: $!";
my $mode = sprintf('%04o', 07777 & (stat($ei_dir[0]))[2]);
is($mode, '0755', 'mode set on ei*/ dir');
my $o = { 2 => \(my $err = '') };
ok(run_script([qw(-xcpdb -R4), $d]), 'xcpdb R4');
my @dirs = glob("$d/ei*/?");
for my $i (0..3) {
is(grep(m!/ei[0-9]+/$i\z!, @dirs), 1, "shard [$i] created");
my $m = sprintf('%04o', 07777 & (stat($dirs[$i]))[2]);
is($m, $mode, "shard [$i] mode");
}
delete @$es{qw(xdb qp)};
is($es->mset('z:0..')->size, $nresult0, 'new shards, same results');
for my $i (4..5) {
is(grep(m!/ei[0-9]+/$i\z!, @dirs), 0, "no shard [$i]");
}
ok(run_script([qw(-xcpdb -R2), $d]), 'xcpdb -R2');
@dirs = glob("$d/ei*/?");
for my $i (0..1) {
is(grep(m!/ei[0-9]+/$i\z!, @dirs), 1, "shard [$i] kept");
}
for my $i (2..3) {
is(grep(m!/ei[0-9]+/$i\z!, @dirs), 0, "no shard [$i]");
}
skip 'xapian-compact missing', 4 unless have_xapian_compact;
ok(run_script([qw(-compact), $d], undef, $o), 'compact');
# n.b. stderr contains xapian-compact output
my @d2 = glob("$d/ei*/?");
is_deeply(\@d2, \@dirs, 'dirs consistent after compact');
ok(run_script([qw(-extindex --dedupe --all), $d]),
'--dedupe works after compact');
ok(run_script([qw(-extindex --gc), $d], undef, $o),
'--gc works after compact');
}
{ # ensure --gc removes non-xposted messages
my $old_size = -s $cfg_path // xbail "stat $cfg_path $!";
my $tmp_addr = 'v2tmp@example.com';
run_script([qw(-init v2tmp --indexlevel basic
--newsgroup v2tmp.example),
"$home/v2tmp", 'http://example.com/v2tmp', $tmp_addr ])
or xbail '-init';
$env = { ORIGINAL_RECIPIENT => $tmp_addr };
open $fh, '+>', undef or xbail "open $!";
$fh->autoflush(1);
my $mid = 'tmpmsg@example.com';
print $fh <
Subject: tmpmsg
Date: Tue, 19 Jan 2038 03:14:07 +0000
EOM
seek $fh, 0, SEEK_SET or xbail "seek $!";
run_script([qw(-mda --no-precheck)], $env, {0 => $fh}) or xbail '-mda';
ok(run_script([qw(-extindex --all), "$home/extindex"]), 'update');
my $nr;
{
my $es = PublicInbox::ExtSearch->new("$home/extindex");
my ($id, $prv);
my $smsg = $es->over->next_by_mid($mid, \$id, \$prv);
ok($smsg, 'tmpmsg indexed');
my $mset = $es->search->mset("mid:$mid");
is($mset->size, 1, 'new message found');
$mset = $es->search->mset('z:0..');
$nr = $mset->size;
}
truncate($cfg_path, $old_size) or xbail "truncate $!";
my $rdr = { 2 => \(my $err) };
ok(run_script([qw(-extindex --gc), "$home/extindex"], undef, $rdr),
'gc to get rid of removed inbox');
is_deeply([ grep(!/^(?:I:|#)/, split(/^/m, $err)) ], [],
'no non-informational errors in stderr');
my $es = PublicInbox::ExtSearch->new("$home/extindex");
my $mset = $es->search->mset("mid:$mid");
is($mset->size, 0, 'tmpmsg gone from search');
my ($id, $prv);
is($es->over->next_by_mid($mid, \$id, \$prv), undef,
'tmpmsg gone from over');
$id = $prv = undef;
is($es->over->next_by_mid('testmessage@example.com', \$id, \$prv),
undef, 'remaining message not indavderover');
$mset = $es->search->mset('z:0..');
is($mset->size, $nr - 1, 'existing messages not clobbered from search');
my $o = $es->over->{dbh}->selectall_arrayref(<size, 'over row count matches Xapian');
my $x = $es->over->{dbh}->selectall_arrayref(<