[GitHub] [iceberg] RussellSpitzer commented on a diff in pull request #7517: API: StructProjection returns null projection object for null nested struct value

["RussellSpitzer (via GitHub)" <gi...@apache.org>]

RussellSpitzer commented on code in PR #7517:
URL: https://github.com/apache/iceberg/pull/7517#discussion_r1185449600


##########
api/src/main/java/org/apache/iceberg/util/StructProjection.java:
##########
@@ -189,16 +189,12 @@ public int size() {
 
   @Override
   public <T> T get(int pos, Class<T> javaClass) {
-    if (struct == null) {
-      // Return a null struct when projecting a nested required field from an optional struct.
-      // See more details in issue #2738.
-      return null;
-    }
-
     int structPos = positionMap[pos];
-
     if (nestedProjections[pos] != null) {
-      return javaClass.cast(nestedProjections[pos].wrap(struct.get(structPos, StructLike.class)));
+      StructLike nestedStruct = struct.get(structPos, StructLike.class);

Review Comment:
   is there a potential npe here if "struct" is null?



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