From 3e07d8ddf2a71c8f0290cccd695bd69030611766 Mon Sep 17 00:00:00 2001
From: Alexander Bigga <alexander.bigga@slub-dresden.de>
Date: Tue, 12 Jun 2018 15:47:08 +0200
Subject: [PATCH] OAI solr query should always respect toplevel setting

---
 plugins/oai/class.tx_dlf_oai.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/plugins/oai/class.tx_dlf_oai.php b/plugins/oai/class.tx_dlf_oai.php
index 166fc32a..c886085c 100644
--- a/plugins/oai/class.tx_dlf_oai.php
+++ b/plugins/oai/class.tx_dlf_oai.php
@@ -921,6 +921,9 @@ class tx_dlf_oai extends tx_dlf_plugin {
             $solr_query .= ' NOT '.$required.':""';
         }
 
+        // toplevel="true" is always required
+        $solr_query .= ' AND toplevel:"true"';
+
         $from = "*";
         // Check "from" for valid value.
         if (!empty($this->piVars['from'])) {