minor: segregate null functions in a seperate block

KKcorps · KKcorps · commit f0e7618e6e94 · 2022-03-22T00:54:23.000+05:30
diff --git a/pinot-common/src/main/java/org/apache/pinot/common/function/TransformFunctionType.java b/pinot-common/src/main/java/org/apache/pinot/common/function/TransformFunctionType.java
@@ -55,6 +55,7 @@ public enum TransformFunctionType {
   LESS_THAN("less_than"),
   LESS_THAN_OR_EQUAL("less_than_or_equal"),
   IN("in"),
+
   IS_NULL("is_null"),
   IS_NOT_NULL("is_not_null"),
 
diff --git a/pinot-core/src/main/java/org/apache/pinot/core/operator/transform/function/TransformFunctionFactory.java b/pinot-core/src/main/java/org/apache/pinot/core/operator/transform/function/TransformFunctionFactory.java
@@ -165,6 +165,8 @@ private TransformFunctionFactory() {
           // tuple selection
           put(canonicalize(TransformFunctionType.LEAST.getName().toLowerCase()), LeastTransformFunction.class);
           put(canonicalize(TransformFunctionType.GREATEST.getName().toLowerCase()), GreatestTransformFunction.class);
+
+          // null handling
           put(canonicalize(TransformFunctionType.IS_NULL.getName().toLowerCase()), IsNullTransformFunction.class);
           put(canonicalize(TransformFunctionType.IS_NOT_NULL.getName().toLowerCase()),
               IsNotNullTransformFunction.class);
