From 0ca97d191f60a4c0d1b92731bfa531f68fc98452 Mon Sep 17 00:00:00 2001
From: Eric Lippmann <eric.lippmann@icinga.com>
Date: Fri, 22 Jun 2018 09:29:55 +0200
Subject: [PATCH] Use subquery filters for host downtime history if appropriate

refs #2934
---
 .../Query/HostdowntimestarthistoryQuery.php   | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/modules/monitoring/library/Monitoring/Backend/Ido/Query/HostdowntimestarthistoryQuery.php b/modules/monitoring/library/Monitoring/Backend/Ido/Query/HostdowntimestarthistoryQuery.php
index f3c989bfc..003cc9e88 100644
--- a/modules/monitoring/library/Monitoring/Backend/Ido/Query/HostdowntimestarthistoryQuery.php
+++ b/modules/monitoring/library/Monitoring/Backend/Ido/Query/HostdowntimestarthistoryQuery.php
@@ -23,6 +23,11 @@ class HostdowntimestarthistoryQuery extends IdoQuery
      */
     protected $groupOrigin = array('hostgroups', 'services');
 
+    protected $subQueryTargets = array(
+        'hostgroups'    => 'hostgroup',
+        'servicegroups' => 'servicegroup'
+    );
+
     /**
      * {@inheritdoc}
      */
@@ -180,4 +185,19 @@ class HostdowntimestarthistoryQuery extends IdoQuery
             array()
         );
     }
+
+    protected function joinSubQuery(IdoQuery $query, $name)
+    {
+        if ($name === 'hostgroup') {
+            $query->joinVirtualTable('members');
+
+            return ['hgm.host_object_id', 'ho.object_id'];
+        } elseif ($name === 'servicegroup') {
+            $query->joinVirtualTable('services');
+
+            return ['s.host_object_id', 'ho.object_id'];
+        }
+
+        return parent::joinSubQuery($query, $name);
+    }
 }