blerer commented on code in PR #3095:
URL: https://github.com/apache/cassandra/pull/3095#discussion_r1591176531


##########
src/java/org/apache/cassandra/cql3/restrictions/StatementRestrictions.java:
##########
@@ -192,26 +189,27 @@ public StatementRestrictions(ClientState state,
          */
         for (Relation relation : whereClause.relations)
         {
-            if ((relation.isContains() || relation.isContainsKey()) && 
(type.isUpdate() || type.isDelete()))
+
+            Operator operator = relation.operator();
+            if 
(operator.requiresFilteringOrIndexingFor(ColumnMetadata.Kind.CLUSTERING) && 
(type.isUpdate() || type.isDelete()))
             {
-                throw invalidRequest("Cannot use %s with %s", type, 
relation.operator());
+                throw invalidRequest("Cannot use %s with %s", type, operator);
             }
 
-            if (relation.operator() == Operator.IS_NOT)
+            if (operator == Operator.IS_NOT)
             {
                 if (!forView)
                     throw new InvalidRequestException("Unsupported 
restriction: " + relation);
 
-                this.notNullColumns.addAll(relation.toRestriction(table, 
boundNames).getColumnDefs());
+                this.notNullColumns.addAll(relation.toRestriction(table, 
boundNames).columns());
             }
-            else if (relation.isLIKE())
+            else if (operator.requiresIndexing())
             {
                 Restriction restriction = relation.toRestriction(table, 
boundNames);
 
                 if (!type.allowUseOfSecondaryIndices() || 
!restriction.hasSupportingIndex(indexRegistry))

Review Comment:
   At this places the code make sure the IndexRegistry is not null. 



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