* [PATCH] lei_mail_sync: explicit bind for old SQL_VARCHAR compat
@ 2022-04-18 9:44 7% Eric Wong
0 siblings, 0 replies; 1+ results
From: Eric Wong @ 2022-04-18 9:44 UTC (permalink / raw)
To: meta
This avoids repeated work for incremental "lei import" runs when
users upgrade from 1.7 to current public-inbox.git (and eventually
1.8).
We need the explicit bind_param for fallback calls because
previous bind_param calls are "sticky" for a given statement
handle. The DBI(3pm) manpage states:
The data type is 'sticky' in that bind values passed to execute()
are bound with the data type specified by earlier bind_param()
calls, if any. Portable applications should not rely on being
able to change the data type after the first "bind_param" call.
---
I feel like a complete fscking moron for taking all this time to
notice and figure this out :<
lib/PublicInbox/LeiMailSync.pm | 21 ++++++++++++++-------
1 file changed, 14 insertions(+), 7 deletions(-)
diff --git a/lib/PublicInbox/LeiMailSync.pm b/lib/PublicInbox/LeiMailSync.pm
index 85480599..665206a8 100644
--- a/lib/PublicInbox/LeiMailSync.pm
+++ b/lib/PublicInbox/LeiMailSync.pm
@@ -106,12 +106,15 @@ sub get_fid ($$$) {
$sth->execute;
my ($fid) = $sth->fetchrow_array;
if (defined $fid) { # for downgrade+upgrade (1.8 -> 1.7 -> 1.8)
- $dbh->do('DELETE FROM folders WHERE loc = ? AND fid != ?',
- undef, $folder, $fid) if defined($dbh);
+ my $del = $dbh->prepare_cached(<<'');
+DELETE FROM folders WHERE loc = ? AND fid != ?
+
+ $del->execute($folder, $fid);
} else {
- $sth->execute($folder); # fixup old stuff
+ $sth->bind_param(1, $folder, SQL_VARCHAR);
+ $sth->execute; # fixup old stuff
($fid) = $sth->fetchrow_array;
- update_fid($dbh, $fid, $folder) if defined($fid) && $dbh;
+ update_fid($dbh, $fid, $folder) if defined($fid);
}
$fid;
}
@@ -350,7 +353,8 @@ sub locations_for {
}
# deal with 1.7.0 DBs :<
- $sth->execute($oidbin);
+ $sth->bind_param(1, $oidbin, SQL_VARCHAR);
+ $sth->execute;
while (my ($fid, $uid) = $sth->fetchrow_array) {
next if $seen{"$uid.$fid"};
push @{$fid2id{$fid}}, $uid;
@@ -366,7 +370,8 @@ sub locations_for {
}
# deal with 1.7.0 DBs :<
- $sth->execute($oidbin);
+ $sth->bind_param(1, $oidbin, SQL_VARCHAR);
+ $sth->execute;
while (my ($fid, $name) = $sth->fetchrow_array) {
next if $seen{"$fid.$name"};
push @{$fid2id{$fid}}, $name;
@@ -646,7 +651,9 @@ EOM
$sth->bind_param(2, $nm, SQL_BLOB);
$sth->execute;
my @bin = map { $_->[0] } @{$sth->fetchall_arrayref};
- $sth->execute($fid, $nm);
+ $sth->bind_param(1, $fid);
+ $sth->bind_param(2, $nm, SQL_VARCHAR);
+ $sth->execute;
my @old = map { $_->[0] } @{$sth->fetchall_arrayref};
my %uniq; # for public-inbox <= 1.7.0
grep { !$uniq{$_}++ } (@bin, @old);
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2022-04-18 9:44 7% [PATCH] lei_mail_sync: explicit bind for old SQL_VARCHAR compat Eric Wong
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