Aklakan commented on code in PR #2925:
URL: https://github.com/apache/jena/pull/2925#discussion_r1908602744


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jena-arq/src/main/java/org/apache/jena/query/Query.java:
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@@ -98,7 +98,7 @@ public class Query extends Prologue implements Cloneable, 
Printable
     public static final int ORDER_UNKNOW              = -3 ;
 
     // VALUES trailing clause
-    protected TableData valuesDataBlock = null ;
+    protected TableN valuesDataBlock = null ;

Review Comment:
   Should the valuesDataBlock be mutable or not? One test case written by me 
some years ago assumed it to be mutable - but the implementation of TableData 
suggests to be immutable as the addBinding method is overridden to reject 
updates.
   
   As I see it: TableN -> mutable, TableData -> immutable - much like guava's 
List and ImmutableList.



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