[GitHub] [pinot] KKcorps commented on a diff in pull request #10613: [feature] [null support # 10] Add null support in all transform function and pass the bitmap to upstream

[via GitHub]

KKcorps commented on code in PR #10613:
URL: https://github.com/apache/pinot/pull/10613#discussion_r1181438028


##########
pinot-core/src/main/java/org/apache/pinot/core/operator/transform/function/CoalesceTransformFunction.java:
##########
@@ -399,4 +390,22 @@ public String[] transformToStringValuesSV(ValueBlock 
valueBlock) {
     }
     return getStringTransformResults(valueBlock);
   }
+
+  @Override
+  public RoaringBitmap getNullBitmap(ValueBlock valueBlock) {
+    RoaringBitmap[] nullBitMaps = getNullBitMaps(valueBlock, 
_transformFunctions);
+    RoaringBitmap bitmap = nullBitMaps[0];
+    for (int i = 1; i < nullBitMaps.length; i++) {
+      RoaringBitmap curBitmap = nullBitMaps[i];
+      if (bitmap != null && curBitmap != null) {
+        bitmap.and(curBitmap);
+      } else {
+        bitmap = null;

Review Comment:
   we can break the loop when setting bitmap to null



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