ServicenotificationQuery: Improve JOIN performance

refs #9009

modules/monitoring/library/Monitoring/Backend/Ido/Query/ServicenotificationQuery.php

@@ -113,14 +113,8 @@ class ServicenotificationQuery extends IdoQuery
             array()
         )->join(
             array('so' => $this->prefix . 'objects'),
-            'so.object_id = sn.object_id',
+            'so.object_id = sn.object_id AND so.is_active = 1 AND so.objecttype_id = 2',
             array()
-        )->where(
-            'so.is_active = ?',
-            1
-        )->where(
-            'so.objecttype_id = ?',
-            2
         );
         $this->joinedVirtualTables['notifications'] = true;
     }
@@ -180,15 +174,8 @@ class ServicenotificationQuery extends IdoQuery
             array()
         )->join(
             array('hgo' => $this->prefix . 'objects'),
-            'hgo.object_id = hg.hostgroup_object_id',
+            'hgo.object_id = hg.hostgroup_object_id AND hgo.is_active = 1 AND hgo.objecttype_id = 3',
             array()
-        )->where(
-            'hgo.is_active = ?',
-            1
-        )
-        ->where(
-            'hgo.objecttype_id = ?',
-            3
         );
 
         if (! $this->hasJoinedVirtualTable('contactnotifications') && !$this->hasJoinedVirtualTable('history')) {
@@ -224,15 +211,8 @@ class ServicenotificationQuery extends IdoQuery
             array()
         )->join(
             array('sgo' => $this->prefix . 'objects'),
-            'sgo.object_id = sg.servicegroup_object_id',
+            'sgo.object_id = sg.servicegroup_object_id AND sgo.is_active = 1 AND sgo.objecttype_id = 4',
             array()
-        )->where(
-            'sgo.is_active = ?',
-            1
-        )
-        ->where(
-            'sgo.objecttype_id = ?',
-            4
         );
 
         if (! $this->hasJoinedVirtualTable('contactnotifications') && !$this->hasJoinedVirtualTable('history')) {