From e58c31ab63fdb2ad71b4e0f6509ae4c51b37f4ba Mon Sep 17 00:00:00 2001
From: Thomas Gelf <thomas@gelf.net>
Date: Tue, 19 Jul 2016 06:18:52 +0200
Subject: [PATCH] ImportRunBasedPurgeStrategy: do not fetch no rows

---
 .../PurgeStrategy/ImportRunBasedPurgeStrategy.php      | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/library/Director/Import/PurgeStrategy/ImportRunBasedPurgeStrategy.php b/library/Director/Import/PurgeStrategy/ImportRunBasedPurgeStrategy.php
index 0e46e835..4e37b8bb 100644
--- a/library/Director/Import/PurgeStrategy/ImportRunBasedPurgeStrategy.php
+++ b/library/Director/Import/PurgeStrategy/ImportRunBasedPurgeStrategy.php
@@ -66,6 +66,10 @@ class ImportRunBasedPurgeStrategy extends PurgeStrategy
 
         $result = $db->fetchCol($query);
 
+        if (empty($result)) {
+            return array();
+        }
+
         if ($rule->object_type === 'service') {
             $pattern = $rule->getSourceKeyPattern();
             $columns = SyncUtils::getRootVariables(
@@ -78,10 +82,10 @@ class ImportRunBasedPurgeStrategy extends PurgeStrategy
             }
         }
 
-        if ($result) {
-            return array_combine($result, $result);
-        } else {
+        if (empty($result)) {
             return array();
         }
+
+        return array_combine($result, $result);
     }
 }