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ThreadContext.get() / put() [message #1053680]

Tue, 07 May 2013 08:39

Ralph Steiner

Messages: 3
Registered: April 2010

Junior Member

In a previous scout release we used ThreadContext.get() and ThreadContext.putCustomValue() as a short living cache for EJB references. We now updated our code to scout 3.8 and the methods ThreadContext.get() and ThreadContext.put() are now deprecated. Till now, I have not found a matching replacement for this functionality. A comment on the deprecation annotation is missing.

I tried a mix of using ThreadContext.getHttpServletRequest().setAttribute() in cases where I have servlet request and custom ThreadLocal in cases where a ServerJob is used. Problem is that the ThreadLocal is not transferred to new initiated ServerJobs (without more customizing) and that I have to add at several places code to initiate and destroy the custom ThreadLocal reference.
Because of this I still use the deprecated put and get of ThreadContext.

Where do I place such a short living cache which is used in http requests and SeverJobs?

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Re: ThreadContext.get() / put() [message #1058448 is a reply to message #1053680]

Tue, 14 May 2013 07:19

Ralph Steiner

Messages: 3
Registered: April 2010

Junior Member

The solution that I use now is based on using ITransactionMember for the cache and add it to the transaction of the ThreadContext (ThreadContext.getTransaction().registerMember(cache)).
As an example see at the class PreparedStatementCache.
BTW: Using a job property does not work, as the default scheduler (ServerJobs) does not use eclipse jobs.

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