Jackie-Jiang commented on a change in pull request #7443:
URL: https://github.com/apache/pinot/pull/7443#discussion_r711253498
##########
File path:
pinot-common/src/main/java/org/apache/pinot/common/function/scalar/StringFunctions.java
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@@ -328,14 +329,27 @@ public static String normalize(String input) {
/**
* see Normalizer#normalize(String, Form)
- * @param input
- * @param form
- * @return transforms string with the specified normalization form
*/
- @ScalarFunction
- public static String normalize(String input, String form) {
- Normalizer.Form targetForm = Normalizer.Form.valueOf(form);
- return Normalizer.normalize(input, targetForm);
+ public static class NormalizeFunction implements InitializableScalarFunction
{
+ private Normalizer.Form _form;
+
+ @Override
+ public void init(Object... arguments) {
+ Preconditions.checkState(arguments.length == 2
+ && arguments[1] instanceof String);
+ _form = Normalizer.Form.valueOf((String) arguments[1]);
+ }
+
+ /**
+ * see Normalizer#normalize(String, Form)
+ * @param input
+ * @param form
+ * @return transforms string with the specified normalization form
+ */
+ @ScalarFunction
+ String normalize(String input, String form) {
Review comment:
There are other callers to `FunctionInvoker.invoke()`, and we need to
make sure all of them call `init()` first
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