From 82b615ab33be893b8527c0629b6a1e228fd80393 Mon Sep 17 00:00:00 2001
From: Claudio Atzori <claudio.atzori@isti.cnr.it>
Date: Fri, 15 May 2020 16:04:46 +0200
Subject: [PATCH] NPE check

---
 .../src/main/java/eu/dnetlib/dhp/oa/dedup/DedupUtility.java    | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dhp-workflows/dhp-dedup-openaire/src/main/java/eu/dnetlib/dhp/oa/dedup/DedupUtility.java b/dhp-workflows/dhp-dedup-openaire/src/main/java/eu/dnetlib/dhp/oa/dedup/DedupUtility.java
index d3ae8ee4f..a6ec364c4 100644
--- a/dhp-workflows/dhp-dedup-openaire/src/main/java/eu/dnetlib/dhp/oa/dedup/DedupUtility.java
+++ b/dhp-workflows/dhp-dedup-openaire/src/main/java/eu/dnetlib/dhp/oa/dedup/DedupUtility.java
@@ -129,6 +129,9 @@ public class DedupUtility {
 						.max(Comparator.comparing(Tuple2::_1));
 					if (simAuhtor.isPresent() && simAuhtor.get()._1() > THRESHOLD) {
 						Author r = simAuhtor.get()._2();
+						if (r.getPid() == null) {
+							r.setPid(new ArrayList<>());
+						}
 						r.getPid().add(a._1());
 					}
 				});