From 31902f54dfeecb00a80fd93585e3bfd6117012fa Mon Sep 17 00:00:00 2001
From: Michael Peter Christen <mc@yacy.net>
Date: Tue, 30 Jul 2013 14:32:59 +0200
Subject: [PATCH] fix for NPE which happens within solr code at
 MultiMapSolrParams.java, line 52 in case that the array arr.length == 0

---
 source/net/yacy/server/serverObjects.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/source/net/yacy/server/serverObjects.java b/source/net/yacy/server/serverObjects.java
index b3e58edeb..ee70108e0 100644
--- a/source/net/yacy/server/serverObjects.java
+++ b/source/net/yacy/server/serverObjects.java
@@ -131,7 +131,8 @@ public class serverObjects implements Serializable, Cloneable {
     }
 
     public boolean containsKey(String key) {
-        return this.map.get(key) != null;
+        String[] arr = this.map.getParams(key);
+        return arr != null && arr.length > 0;
     }
     
     public MultiMapSolrParams getSolrParams() {