zstan commented on code in PR #4328:
URL: https://github.com/apache/calcite/pull/4328#discussion_r2060122543
##########
core/src/main/java/org/apache/calcite/sql2rel/RelFieldTrimmer.java:
##########
@@ -473,6 +478,117 @@ public TrimResult trimFields(
return result(newCalc, mapping, calc);
}
+ /**
+ * Shuttle that finds all references to a {@link TableScan} within a tree
+ * of {@link RelNode}s.
+ */
+ private static class InputTables extends RelHomogeneousShuttle {
+ private List<TableScan> tables = new ArrayList<>();
Review Comment:
changed.
##########
core/src/main/java/org/apache/calcite/sql2rel/RelFieldTrimmer.java:
##########
@@ -473,6 +478,117 @@ public TrimResult trimFields(
return result(newCalc, mapping, calc);
}
+ /**
+ * Shuttle that finds all references to a {@link TableScan} within a tree
+ * of {@link RelNode}s.
+ */
+ private static class InputTables extends RelHomogeneousShuttle {
+ private List<TableScan> tables = new ArrayList<>();
+
+ List<TableScan> tables() {
+ return tables;
+ }
+
+ @Override public RelNode visit(TableScan scan) {
+ tables.add(scan);
+ return super.visit(scan);
+ }
+ }
+
+ /**
+ * Shuttle that finds all references to a {@link TableScan} within current
{@link RexNode}.
Review Comment:
changed.
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