add method to get an application scoped concurrentMap to RequestContext
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Key: TRINIDAD-926
URL: https://issues.apache.org/jira/browse/TRINIDAD-926
Project: MyFaces Trinidad
Issue Type: Improvement
Affects Versions: 1.2.5-core, 1.0.5-core
Reporter: Gabrielle Crawford
Assignee: Gabrielle Crawford
Priority: Minor
This started with Trin Issue 891
https://issues.apache.org/jira/browse/TRINIDAD-891
To avoid the locking in the class loader we'd like to store a map of
name->class per app. However the external context app map calls through to the
ServletContext. The Servlet specification doesn't specify whether the
ServletContext performs any locking on the ServletContext attributes and the
ServletContext doesn't expose the necessary methods for efficient concurrent
access (essentially the operations exposed on ConcurrentMap) necessary to work
efficiently in many cases even if the ServletContext didn't need to perform
locking on reads. The result is that the ExternalContext's ApplicationMap
can't implement ConcurrentMap.
We'd like to add a method to the RequestContext to get an application scoped
concurrent map. This would not call through to the servlet context. The api
proposed is this:
/**
* Gets a per application concurrent map. There is no synchronization
* with ServletContext attributes.
*/
public abstract ConcurrentMap<String, Object>
getApplicationScopedConcurrentMap();
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