Add support to clear template cache to FreemarkerTemplateEngine
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Key: WW-3189
URL: https://issues.apache.org/struts/browse/WW-3189
Project: Struts 2
Issue Type: Improvement
Affects Versions: 2.1.6
Environment: Freemarker
Reporter: Jasper Rosenberg
Priority: Minor
Fix For: 2.1.8
In FreemarkerTemplateEngine templates and missingTemplates are private so there
is no way to explicitly clear the cache should I need to reload files on demand
in a production environment (say via a JMX operation).
Both member variables are thread safe, so it should be easy as just adding a
public "void clearTemplateCache()" method which just calls clear() on both
collections.
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