ES|QL: fix ENRICH validation for use of wildcards

Author: luigidellaquila

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/parser/ExpressionBuilder.java

@@ -795,9 +795,9 @@ public NamedExpression visitEnrichWithClause(EsqlBaseParser.EnrichWithClauseCont
 
     private NamedExpression enrichFieldName(EsqlBaseParser.QualifiedNamePatternContext ctx) {
         return visitQualifiedNamePattern(ctx, ne -> {
-            if (ne instanceof UnresolvedNamePattern up) {
+            if (ne instanceof UnresolvedNamePattern || ne instanceof UnresolvedStar) {
                 var src = ne.source();
-                throw new ParsingException(src, "Using wildcards [*] in ENRICH WITH projections is not allowed [{}]", up.pattern());
+                throw new ParsingException(src, "Using wildcards [*] in ENRICH WITH projections is not allowed [{}]", src.text());
             }
         });
     }

x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/parser/StatementParserTests.java

@@ -1082,15 +1082,19 @@ public void testEnrich() {
         );
 
         expectError("from a | enrich countries on foo* ", "Using wildcards [*] in ENRICH WITH projections is not allowed [foo*]");
+        expectError("from a | enrich countries on * ", "Using wildcards [*] in ENRICH WITH projections is not allowed [*]");
         expectError("from a | enrich countries on foo with bar*", "Using wildcards [*] in ENRICH WITH projections is not allowed [bar*]");
+        expectError("from a | enrich countries on foo with *", "Using wildcards [*] in ENRICH WITH projections is not allowed [*]");
         expectError(
             "from a | enrich countries on foo with x = bar* ",
             "Using wildcards [*] in ENRICH WITH projections is not allowed [bar*]"
         );
+        expectError("from a | enrich countries on foo with x = * ", "Using wildcards [*] in ENRICH WITH projections is not allowed [*]");
         expectError(
             "from a | enrich countries on foo with x* = bar ",
             "Using wildcards [*] in ENRICH WITH projections is not allowed [x*]"
         );
+        expectError("from a | enrich countries on foo with * = bar ", "Using wildcards [*] in ENRICH WITH projections is not allowed [*]");
         expectError(
             "from a | enrich typo:countries on foo",
             "line 1:17: Unrecognized value [typo], ENRICH policy qualifier needs to be one of [_ANY, _COORDINATOR, _REMOTE]"