From 0f32bd99997c82cf7b70eef32818dc817cbff64b Mon Sep 17 00:00:00 2001
From: Fridolin Somers <fridolin.somers@biblibre.com>
Date: Fri, 24 Mar 2017 16:07:16 +0100
Subject: [PATCH] Bug 18329 - Batch record deletion broken

Hie, Tools > Batch record deletion seems broken.
Any deletion returns error :
Bibliographic record YYY was not deleted. An error occurred. (The error was: {UNKNOWN}: DBD::mysql::db begin_work failed: Already in a transaction at /usr/share/perl5/DBIx/Class/Storage/DBI.pm line 1560. at /home/koha/src/C4/Biblio.pm line 3468 , see the Koha log file for more information).

Looks like it is because of Bug 18242 which added a transaction  in C4::Biblio::_koha_delete_biblio_metadata : $schema->txn_do.
The script batch_delete_records created a transaction with $dbh->{AutoCommit} = 0;

This patch fixes by using also Koha::Schema in batch_delete_records to manage transaction.
It also removes "$dbh->{RaiseError} = 1", this behavior is managed in Koha::Database.

Test plan :
 - Go to Staff interface : Tools > Batch record deletion
 - Enter a few existing biblionumbers
 - Click on "Continue"
 - Click on "Delete selected records"
=> Without patch you get a DB error
=> With patch you get confirmation message
 - Try to get the biblios to confirm they are deleted : /cgi-bin/koha/catalogue/detail.pl?biblionumber=xxx
 - Test with and without Plack

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
---
 tools/batch_delete_records.pl | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/tools/batch_delete_records.pl b/tools/batch_delete_records.pl
index 195f767e7f..46b9c88977 100755
--- a/tools/batch_delete_records.pl
+++ b/tools/batch_delete_records.pl
@@ -31,7 +31,6 @@ use C4::Biblio;
 use Koha::Biblios;
 
 my $input = new CGI;
-my $dbh = C4::Context->dbh;
 my $op = $input->param('op') // q|form|;
 my $recordtype = $input->param('recordtype') // 'biblio';
 
@@ -114,9 +113,7 @@ if ( $op eq 'form' ) {
 } elsif ( $op eq 'delete' ) {
     # We want to delete selected records!
     my @record_ids = $input->multi_param('record_id');
-    my $dbh = C4::Context->dbh;
-    $dbh->{AutoCommit} = 0;
-    $dbh->{RaiseError} = 1;
+    my $schema = Koha::Database->new->schema;
 
     my $error;
     my $report = {
@@ -126,6 +123,8 @@ if ( $op eq 'form' ) {
     RECORD_IDS: for my $record_id ( sort { $a <=> $b } @record_ids ) {
         $report->{total_records}++;
         next unless $record_id;
+        $schema->storage->txn_begin;
+
         if ( $recordtype eq 'biblio' ) {
             # Biblios
             my $biblionumber = $record_id;
@@ -140,7 +139,7 @@ if ( $op eq 'form' ) {
                     code => 'item_issued',
                     biblionumber => $biblionumber,
                 };
-                $dbh->rollback;
+                $schema->storage->txn_rollback;
                 next;
             }
 
@@ -158,7 +157,7 @@ if ( $op eq 'form' ) {
                         reserve_id => $hold->reserve_id,
                         error => $@,
                     };
-                    $dbh->rollback;
+                    $schema->storage->txn_rollback;
                     next RECORD_IDS;
                 }
             }
@@ -175,7 +174,7 @@ if ( $op eq 'form' ) {
                         itemnumber => $itemnumber,
                         error => ($@ ? $@ : $error),
                     };
-                    $dbh->rollback;
+                    $schema->storage->txn_rollback;
                     next RECORD_IDS;
                 }
             }
@@ -191,7 +190,7 @@ if ( $op eq 'form' ) {
                     biblionumber => $biblionumber,
                     error => ($@ ? $@ : $error),
                 };
-                $dbh->rollback;
+                $schema->storage->txn_rollback;
                 next;
             }
 
@@ -201,7 +200,7 @@ if ( $op eq 'form' ) {
                 biblionumber => $biblionumber,
             };
             $report->{total_success}++;
-            $dbh->commit;
+            $schema->storage->txn_commit;
         } else {
             # Authorities
             my $authid = $record_id;
@@ -213,7 +212,7 @@ if ( $op eq 'form' ) {
                     authid => $authid,
                     error => ($@ ? $@ : 0),
                 };
-                $dbh->rollback;
+                $schema->storage->txn_rollback;
                 next;
             } else {
                 push @messages, {
@@ -222,7 +221,7 @@ if ( $op eq 'form' ) {
                     authid => $authid,
                 };
                 $report->{total_success}++;
-                $dbh->commit;
+                $schema->storage->txn_commit;
             }
         }
     }
-- 
2.39.5