[Koha-patches] [PATCH] Bug 6280 : Don't generate invalid SQL in GetPendingIssues

[Colin Campbell]

Change to parameter list in GetPendingIssues made it
callable by an empty list resulting in invalid sql being
sent to server. As this was occuring on most issues error log
was filling up. Put safeguard in the routine
Also don't bother calling when you have no need

Some of the processing was needlessly obscure
---
 C4/Members.pm         |   19 +++++++++++++------
 circ/circulation.pl   |    8 ++++++--
 members/moremember.pl |    9 ++++++---
 3 files changed, 25 insertions(+), 11 deletions(-)

diff --git a/C4/Members.pm b/C4/Members.pm
index a151e03..14a58bf 100644
--- a/C4/Members.pm
+++ b/C4/Members.pm
@@ -1023,13 +1023,19 @@ The keys include C<biblioitems> fields except marc and marcxml.
 
 #'
 sub GetPendingIssues {
-    my (@borrowernumbers) = @_;
+    my @borrowernumbers = @_;
+
+    unless (@borrowernumbers ) { # return a ref_to_array
+        return \@borrowernumbers; # to not cause surprise to caller
+    }
 
     # Borrowers part of the query
     my $bquery = '';
     for (my $i = 0; $i < @borrowernumbers; $i++) {
-        $bquery .= " borrowernumber = ?";
-        $bquery .= " OR" if ($i < (scalar(@borrowernumbers) - 1));
+        $bquery .= ' borrowernumber = ?';
+        if ($i < $#borrowernumbers ) {
+            $bquery .= ' OR';
+        }
     }
 
     # must avoid biblioitems.* to prevent large marc and marcxml fields from killing performance
@@ -1070,9 +1076,10 @@ sub GetPendingIssues {
     $sth->execute(@borrowernumbers);
     my $data = $sth->fetchall_arrayref({});
     my $today = C4::Dates->new->output('iso');
-    foreach (@$data) {
-        $_->{date_due} or next;
-        ($_->{date_due} lt $today) and $_->{overdue} = 1;
+    foreach (@{$data}) {
+        if ($_->{date_due}  and $_->{date_due} lt $today) {
+            $_->{overdue} = 1;
+        }
     }
     return $data;
 }
diff --git a/circ/circulation.pl b/circ/circulation.pl
index 8c359b1..80b24da 100755
--- a/circ/circulation.pl
+++ b/circ/circulation.pl
@@ -463,8 +463,11 @@ if ($borrower) {
     #push @borrowernumbers, $borrower->{'borrowernumber'};
 
     # get each issue of the borrower & separate them in todayissues & previous issues
-    my ($issueslist) = GetPendingIssues($borrower->{'borrowernumber'});
-    my ($relissueslist) = GetPendingIssues(@relborrowernumbers);
+    my $issueslist = GetPendingIssues($borrower->{'borrowernumber'});
+    my $relissueslist = [];
+    if ( @relborrowernumbers ) {
+        $relissueslist = GetPendingIssues(@relborrowernumbers);
+    }
 
     build_issue_data($issueslist, 0);
     build_issue_data($relissueslist, 1);
@@ -477,6 +480,7 @@ if ($borrower) {
     else {
         @todaysissues   = sort { $b->{'timestamp'} cmp $a->{'timestamp'} } @todaysissues;
     }
+
     if ( C4::Context->preference( "previousIssuesDefaultSortOrder" ) eq 'asc' ){
         @previousissues = sort { $a->{'date_due'} cmp $b->{'date_due'} } @previousissues;
     }
diff --git a/members/moremember.pl b/members/moremember.pl
index b766f2f..e1a5dbf 100755
--- a/members/moremember.pl
+++ b/members/moremember.pl
@@ -242,9 +242,12 @@ if ( C4::Context->preference('OPACPrivacy') ) {
 #
 my @borrowernumbers = GetMemberRelatives($borrowernumber);
 my $issue       = GetPendingIssues($borrowernumber);
-my $relissue    = GetPendingIssues(@borrowernumbers);
-my $issuecount = scalar(@$issue);
-my $relissuecount  = scalar(@$relissue);
+my $relissue    = [];
+if ( @borrowernumbers ) {
+    $relissue    = GetPendingIssues(@borrowernumbers);
+}
+my $issuecount     = @{$issue};
+my $relissuecount  = @{$relissue};
 my $roaddetails = &GetRoadTypeDetails( $data->{'streettype'} );
 my $today       = POSIX::strftime("%Y-%m-%d", localtime);	# iso format
 my @issuedata;
-- 
1.7.4.4