vlsi commented on a change in pull request #1704: [CALCITE-3644] Add
ProjectSetOpTransposeRule to normalize materialized view
URL: https://github.com/apache/calcite/pull/1704#discussion_r366173108
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File path: core/src/main/java/org/apache/calcite/rel/mutable/MutableRels.java
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@@ -173,6 +173,23 @@ public RexNode get(int index) {
.collect(Collectors.toList());
}
+ /**
+ * Construct expression list of Project by the given fields of the input.
+ */
+ public static List<RexNode> createProjects(final MutableRel child,
+ final List<RexNode> projs) {
+ List<RexNode> rexNodeList = new ArrayList<>();
+ for (int i = 0; i < projs.size(); i++) {
+ if (projs.get(i) instanceof RexInputRef) {
+ RexInputRef rexInputRef = (RexInputRef) projs.get(i);
+ rexNodeList.add(RexInputRef.of(rexInputRef.getIndex(), child.rowType));
+ } else {
Review comment:
What if `RexInputRef` is located inside a `RexCall`?
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