[GitHub] [calcite] yanlin-Lynn commented on a change in pull request #1459: [CALCITE-3347] IndexOutOfBoundsException in FixNullabilityShuttle when using FilterIntoJoinRule

[GitBox <gi...@apache.org>]

yanlin-Lynn commented on a change in pull request #1459: [CALCITE-3347] IndexOutOfBoundsException in FixNullabilityShuttle when using FilterIntoJoinRule
URL: https://github.com/apache/calcite/pull/1459#discussion_r330834203
 
 

 ##########
 File path: core/src/main/java/org/apache/calcite/rel/rules/FilterJoinRule.java
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 @@ -329,7 +330,17 @@ protected void validateJoinFilters(List<RexNode> aboveFilters,
     final Iterator<RexNode> filterIter = joinFilters.iterator();
     while (filterIter.hasNext()) {
       RexNode exp = filterIter.next();
-      if (!predicate.apply(join, joinType, exp)) {
+      int maxIndex = -1;
+      ImmutableList<RexInputRef> inputRefs = RexUtil.getAllInputRef(exp);
+      for (RexInputRef rexInputRef: inputRefs) {
+        if (rexInputRef.getIndex() > maxIndex) {
+          maxIndex = rexInputRef.getIndex();
+        }
+      }
 
 Review comment:
   Agree, that's better.

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