Github user olegz commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1202#discussion_r88307973
--- Diff:
nifi-commons/nifi-utils/src/main/java/org/apache/nifi/util/timebuffer/CountSizeEntityAccess.java
---
@@ -0,0 +1,43 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.nifi.util.timebuffer;
+
+public class CountSizeEntityAccess implements EntityAccess<TimedCountSize>
{
+ @Override
+ public TimedCountSize aggregate(final TimedCountSize oldValue, final
TimedCountSize toAdd) {
+ if (oldValue == null && toAdd == null) {
+ return new TimedCountSize(0L, 0L);
+ } else if (oldValue == null) {
+ return toAdd;
+ } else if (toAdd == null) {
+ return oldValue;
+ }
+
+ return new TimedCountSize(oldValue.getCount() + toAdd.getCount(),
oldValue.getSize() + toAdd.getSize());
--- End diff --
Isn't this a dead code?
I think the below code would do the same
```
if (oldValue == null && toAdd == null) {
return new TimedCountSize(0L, 0L);
} else if (oldValue == null) {
return toAdd;
} else {
return oldValue;
}
```
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