macroguo-ghy commented on code in PR #4855:
URL: https://github.com/apache/calcite/pull/4855#discussion_r3006367189
##########
testkit/src/main/java/org/apache/calcite/util/Smalls.java:
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@@ -1493,6 +1494,23 @@ public static ByteString eval(String s) {
}
}
+ /** User-defined function with return type byte[]. */
+ public static class ByteArrayFunction {
+ public static byte[] eval(String s) {
+ if (s == null) {
+ return null;
+ }
+ return s.getBytes(StandardCharsets.UTF_8);
+ }
+ }
+
+ /** User-defined function with parameter type byte[]. */
+ public static class ByteArrayLengthFunction {
+ public static int eval(byte[] bytes) {
Review Comment:
UDF in `Smalls` is just for test
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