- fixed query for descriptive metadata

lib/SLUB/LZA/TA/Archivematica/Elasticsearch.pm

@@ -89,9 +89,11 @@ sub prepare_query ($opt) {
         };
     }
     if (exists $opt->{descriptive}) {
+        #https://opster.com/guides/elasticsearch/search-apis/elasticsearch-match-multi-match-and-match-phrase-queries/#Multi-match-query
         push @should, {
-            "match" => {
-                "transferMetadata.*" => "$opt->{descriptive}",
+            "multi_match" => {
+                "query" => "$opt->{descriptive}",
+                "fields" => ["transferMetadata.*"] # scan all metadata
             }
         }
     }