HoststatusQuery: Improve JOIN performance

refs #9009

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

@@ -194,18 +194,12 @@ SQL;
     protected function joinBaseTables()
     {
         $this->select->from(
-            array('ho' => $this->prefix . 'objects'),
+            array('h' => $this->prefix . 'hosts'),
             array()
         )->join(
-            array('h' => $this->prefix . 'hosts'),
+            array('ho' => $this->prefix . 'objects'),
-            'h.host_object_id = ho.object_id',
+            'ho.object_id = h.host_object_id AND ho.is_active = 1 AND ho.objecttype_id = 1',
             array()
-        )->where(
-            'ho.is_active = ?',
-            1
-        )->where(
-            'ho.objecttype_id = ?',
-            1
         );
         $this->joinedVirtualTables['hosts'] = true;
     }
@@ -225,15 +219,8 @@ SQL;
             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
         );
         $this->group('ho.name1');
     }
@@ -314,15 +301,8 @@ SQL;
             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
         );
         $this->group('ho.name1');
     }
@@ -339,15 +319,8 @@ SQL;
             array()
         )->join(
             array('so' => $this->prefix . 'objects'),
-            'so.object_id = s.service_object_id',
+            'so.object_id = s.service_object_id AND so.is_active = 1 AND so.objecttype_id = 2',
             array()
-        )->where(
-            'so.is_active = ?',
-            1
-        )
-        ->where(
-            'so.objecttype_id = ?',
-            2
         );
         $this->group('ho.name1');
     }