Thomas Heigl created WICKET-6644:
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Summary: AbstractPageableView can only be serialized with Java
built-in serialization
Key: WICKET-6644
URL: https://issues.apache.org/jira/browse/WICKET-6644
Project: Wicket
Issue Type: Improvement
Components: wicket-core
Affects Versions: 8.3.0
Reporter: Thomas Heigl
I'm in the progress of replacing FST serialization, that we have used in
production for years, with Kryo.
FST is a drop-in replacement for Java's built-in serialization and respects the
{{readObject/writeObject}} contract. Kryo does not rely on Java serialization
at all.
All of Wicket's classes can be serialized with recent versions of Kryo without
problems, but when I did some exploratory testing, I noticed that all our
pageable lists were empty after deserialization.
After some investigation, I found the root cause of this: WICKET-1323
{{AbstractPageableView}} is the *only* class in Wicket that relies a custom
{{readResolve}} method to correctly restore its sate.
I propose to get rid of this method and simply initialize the transient field
to a default value of {{-1}} or use a {{Long}} instead of a {{long}} to
represent that cached item count.
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