Fix conditions that prevented ORCID Enrichment

dhp-workflows/dhp-graph-mapper/src/main/scala/eu/dnetlib/dhp/enrich/orcid/ORCIDAuthorEnricher.scala

@@ -87,7 +87,7 @@ object ORCIDAuthorEnricher extends Serializable {
   ) = {
     val matched = scala.collection.mutable.ArrayBuffer.empty[MatchedAuthors]
 
-    if (graph_authors != null && graph_authors.isEmpty) {
+    if (graph_authors != null && !graph_authors.isEmpty) {
       val ait = graph_authors.iterator
 
       while (ait.hasNext) {

dhp-workflows/dhp-graph-mapper/src/main/scala/eu/dnetlib/dhp/enrich/orcid/SparkEnrichGraphWithOrcidAuthors.scala

@@ -72,7 +72,7 @@ class SparkEnrichGraphWithOrcidAuthors(propertyPath: String, args: Array[String]
           .join(matched, Seq("id"), "left")
           .withColumn(
             "author",
-            when(size(col("enriched_author")).gt(1), col("enriched_author"))
+            when(size(col("enriched_author")).gt(0), col("enriched_author"))
               .otherwise(col("author"))
           )
           .drop("enriched_author")