From c88ae0d7d160868eda46941499004c16236279f0 Mon Sep 17 00:00:00 2001
From: Katja Luther <k.luther@bgbm.org>
Date: Mon, 20 Aug 2018 11:54:17 +0200
Subject: [PATCH] fix NPE in CdmLightExport

---
 .../cdm/io/cdmLight/CdmLightClassificationExport.java | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/cdmlib-io/src/main/java/eu/etaxonomy/cdm/io/cdmLight/CdmLightClassificationExport.java b/cdmlib-io/src/main/java/eu/etaxonomy/cdm/io/cdmLight/CdmLightClassificationExport.java
index ffb7b35197..6360181a84 100755
--- a/cdmlib-io/src/main/java/eu/etaxonomy/cdm/io/cdmLight/CdmLightClassificationExport.java
+++ b/cdmlib-io/src/main/java/eu/etaxonomy/cdm/io/cdmLight/CdmLightClassificationExport.java
@@ -1583,11 +1583,14 @@ public class CdmLightClassificationExport
             }
 
         }
-        if (!StringUtils.isBlank(reference.getDatePublished().getFreeText())){
-            shortCitation = shortCitation + " (" + reference.getDatePublished().getFreeText() + ")";
-        }else if (!StringUtils.isBlank(reference.getYear()) ){
-            shortCitation = shortCitation + " (" + reference.getYear() + ")";
+        if (reference.getDatePublished() != null) {
+            if (!StringUtils.isBlank(reference.getDatePublished().getFreeText())){
+                shortCitation = shortCitation + " (" + reference.getDatePublished().getFreeText() + ")";
+            }else if (!StringUtils.isBlank(reference.getYear()) ){
+                shortCitation = shortCitation + " (" + reference.getYear() + ")";
+            }
         }
+
         return shortCitation;
     }
 
-- 
2.34.1