fixed NPE

2021-07-21 21:23:11 +02:00 · 2021-07-21 21:23:11 +02:00 · d94565862a
parent 31d2d6d41e
commit d94565862a
1 changed files with 1 additions and 0 deletions
--- a/dhp-common/src/main/java/eu/dnetlib/dhp/oa/merge/AuthorMerger.java
+++ b/dhp-common/src/main/java/eu/dnetlib/dhp/oa/merge/AuthorMerger.java
@ -67,6 +67,7 @@ public class AuthorMerger {
 				a -> a
 					.getPid()
 					.stream()
+					.filter(Objects::nonNull)
 					.map(p -> new Tuple2<>(pidToComparableString(p), a)))
 			.collect(Collectors.toMap(Tuple2::_1, Tuple2::_2, (x1, x2) -> x1));