From aa14e3e2d19712bb8e06adacdb59a008088335b6 Mon Sep 17 00:00:00 2001
From: joshferraro <joshferraro>
Date: Fri, 30 Sep 2005 18:58:25 +0000
Subject: [PATCH] Previously there was no check to make sure that an issn
 number actually existed; so if there was no isbn, and the issn was blank, the
 item would be assigned a random biblionumber and the breeding farm would
 report that the item already exists in the catalog (even though it didn't).
 This fix adds a check to determine whether the imported record has an issn
 before assigning a matching biblionumber.

---
 C4/Breeding.pm | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/C4/Breeding.pm b/C4/Breeding.pm
index 1583fda21f..030da534f3 100644
--- a/C4/Breeding.pm
+++ b/C4/Breeding.pm
@@ -91,8 +91,10 @@ where isbn=? and title=?");
 				$searchisbn->execute($oldbiblio->{isbn});
 				($biblioitemnumber) = $searchisbn->fetchrow;
 			} else {
-				$searchissn->execute($oldbiblio->{issn});
-				($biblioitemnumber) = $searchissn->fetchrow;
+				if ($oldbiblio->{issn}) {
+                                $searchissn->execute($oldbiblio->{issn});
+                                ($biblioitemnumber) = $searchissn->fetchrow;
+                                }
 			}
 			if ($biblioitemnumber) {
 				$alreadyindb++;
-- 
2.20.1