Fix UpdateQuery.Builder to allow only a scriptname to be set.

Signed-off-by: Peter-Josef Meisch <pj.meisch@sothawo.com>

src/main/java/org/springframework/data/elasticsearch/core/query/UpdateQuery.java

@@ -438,8 +438,8 @@ public class UpdateQuery {
 
 		public UpdateQuery build() {
 
-			if (script == null && document == null && query == null) {
+			if (script == null && scriptName == null && document == null && query == null) {
-				throw new IllegalArgumentException("either script, document or query must be set");
+				throw new IllegalArgumentException("either script, scriptName, document or query must be set");
 			}
 
 			return new UpdateQuery(id, script, params, document, upsert, lang, routing, scriptedUpsert, docAsUpsert,

src/test/java/org/springframework/data/elasticsearch/core/query/UpdateQueryTest.java

@@ -0,0 +1,45 @@
+package org.springframework.data.elasticsearch.core.query;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.springframework.data.elasticsearch.core.document.Document;
+
+class UpdateQueryTest {
+
+	@Test // #3205
+	@DisplayName("should build query with only a script")
+	void shouldBuildQueryWithOnlyAScript() {
+
+		UpdateQuery.builder("id")
+				.withScript("script")
+				.build();
+	}
+
+	@Test // #3205
+	@DisplayName("should build query with only a scriptname")
+	void shouldBuildQueryWithOnlyAScriptName() {
+
+		UpdateQuery.builder("id")
+				.withScriptName("scriptname")
+				.build();
+	}
+
+	@Test // #3205
+	@DisplayName("should build query with only a document")
+	void shouldBuildQueryWithOnlyASDocument() {
+
+		UpdateQuery.builder("id")
+				.withDocument(Document.create())
+				.build();
+	}
+
+	@Test // #3205
+	@DisplayName("should build query with only a query")
+	void shouldBuildQueryWithOnlyAQuery() {
+
+		Query query = StringQuery.builder("StrignQuery").build();
+
+		UpdateQuery.builder(query)
+				.build();
+	}
+}