snuyanzin commented on code in PR #28113:
URL: https://github.com/apache/flink/pull/28113#discussion_r3188055520
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flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/utils/ShortcutUtils.java:
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@@ -169,6 +177,70 @@ public static boolean isFunctionKind(SqlOperator operator,
FunctionKind kind) {
return functionDefinition != null && functionDefinition.getKind() ==
kind;
}
+ public static boolean isOneOfFunctionDefinitions(
+ RexNode rexNode, FunctionDefinition... expectedDefinitions) {
+ if (!(rexNode instanceof RexCall)) {
+ return false;
+ }
+ final RexCall call = (RexCall) rexNode;
+ final FunctionDefinition unwrapped = unwrapFunctionDefinition(call);
+ final String operatorName = call.getOperator().getName();
+ for (FunctionDefinition expected : expectedDefinitions) {
+ if (unwrapped != null && unwrapped == expected) {
+ return true;
+ }
+ if (expected instanceof BuiltInFunctionDefinition
+ && ((BuiltInFunctionDefinition) expected)
+ .getName()
+ .equalsIgnoreCase(operatorName)) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ public static RexNode expandLocalRef(RexNode operand, @Nullable
List<RexNode> exprs) {
Review Comment:
Moved to `FlinkRexUtil`
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