Fix #1023

Author: cowtowncoder

release-notes/VERSION-2.x

@@ -21,6 +21,8 @@ JSON library.
   (reported by Chris R)
 #1003: Add FastDoubleParser section to `NOTICE`
 #1014: Increase default max allowed String value length from 5 megs to 20 megs
+#1023: Problem with `FilteringGeneratorDelegate` wrt `TokenFilter.Inclusion.INCLUDE_NON_NULL`
+  (reported by @honhimW)
 
 2.15.0 (23-Apr-2023)
 

src/main/java/com/fasterxml/jackson/core/filter/FilteringGeneratorDelegate.java

@@ -254,6 +254,10 @@ public void writeStartArray(Object forValue) throws IOException
             _checkParentPath();
             _filterContext = _filterContext.createChildArrayContext(_itemFilter, true);
             delegate.writeStartArray(forValue);
+        } else if (_itemFilter != null && _inclusion == Inclusion.INCLUDE_NON_NULL) {
+            _checkParentPath(false /* isMatch */);
+            _filterContext = _filterContext.createChildArrayContext(_itemFilter, true);
+            delegate.writeStartArray(forValue);
         } else {
             _filterContext = _filterContext.createChildArrayContext(_itemFilter, false);
         }
@@ -283,6 +287,10 @@ public void writeStartArray(Object forValue, int size) throws IOException
             _checkParentPath();
             _filterContext = _filterContext.createChildArrayContext(_itemFilter, true);
             delegate.writeStartArray(forValue, size);
+        } else if (_itemFilter != null && _inclusion == Inclusion.INCLUDE_NON_NULL) {
+            _checkParentPath(false /* isMatch */);
+            _filterContext = _filterContext.createChildArrayContext(_itemFilter, true);
+            delegate.writeStartArray(forValue, size);
         } else {
             _filterContext = _filterContext.createChildArrayContext(_itemFilter, false);
         }