Christoph Nenning created WW-4266:
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Summary: resource reloading does not work in IBM JVM
Key: WW-4266
URL: https://issues.apache.org/jira/browse/WW-4266
Project: Struts 2
Issue Type: Bug
Components: Core Actions
Affects Versions: 2.3.16
Environment: WAS 8.5 with IBM JVM 6
Reporter: Christoph Nenning
Priority: Trivial
When resources reloading is enabled, LocalizedTextUtil uses reflection to clear
a private static map of the ResourceBundle class. The member name of that map
is "cacheList".
The IBM JVM has a different impl of ResourceBundle which does not have the
"cacheList" member. That causes a lot of NoSuchFieldExceptions in log and
resource reloading does not work.
To fix it the patch catches NoSuchFieldException and uses clearMap() to clear
the cache of that IBM ResourceBundle (which is just called "cache").
Notes:
- Javadoc indicates that that IBM code is based on the Apache Harmony project
- The type of that cache member is:
WeakHashMap<ClassLoader, Hashtable<String, ResourceBundleSoftRef>>
So one could argue that the patch clears too much, but IMHO that is OK as it is
intended for development mode anyway.
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