From 06b0081fdcbe9c484b4872368bb605c34977ef86 Mon Sep 17 00:00:00 2001
From: Michael Peter Christen <mc@yacy.net>
Date: Wed, 22 Aug 2012 01:55:39 +0200
Subject: [PATCH] fix for NPE during host navigation computation

---
 source/net/yacy/kelondro/data/meta/URIMetadataNode.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/source/net/yacy/kelondro/data/meta/URIMetadataNode.java b/source/net/yacy/kelondro/data/meta/URIMetadataNode.java
index 518880fdb..a5cc5c398 100644
--- a/source/net/yacy/kelondro/data/meta/URIMetadataNode.java
+++ b/source/net/yacy/kelondro/data/meta/URIMetadataNode.java
@@ -146,7 +146,9 @@ public class URIMetadataNode implements URIMetadata {
 
     @Override
     public String hosthash() {
-        return (String) this.doc.getFieldValue(YaCySchema.host_id_s.name());
+        String hosthash = (String) this.doc.getFieldValue(YaCySchema.host_id_s.name());
+        if (hosthash == null) hosthash = ASCII.String(this.hash, 6, 6);
+        return hosthash;
     }
 
     @Override