Cpaulyz commented on code in PR #14223:
URL: https://github.com/apache/iotdb/pull/14223#discussion_r1867321873
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iotdb-api/udf-api/src/main/java/org/apache/iotdb/udf/api/relational/ScalarFunction.java:
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@@ -19,4 +19,50 @@
package org.apache.iotdb.udf.api.relational;
-public interface ScalarFunction extends SQLFunction {}
+import org.apache.iotdb.udf.api.customizer.config.ScalarFunctionConfig;
+import org.apache.iotdb.udf.api.customizer.parameter.FunctionParameters;
+import org.apache.iotdb.udf.api.relational.access.Record;
+
+public interface ScalarFunction extends SQLFunction {
+
+ /**
+ * This method is used to validate {@link FunctionParameters}.
+ *
+ * @param parameters parameters used to validate
+ * @throws Exception if any parameter is not valid
+ */
+ void validate(FunctionParameters parameters) throws Exception;
+
+ /**
+ * This method is mainly used to initialize {@link ScalarFunction}. In this
method, the user can
Review Comment:
Done
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