Re: An Executor-like structure providing more than threads

From:
Tom Anderson <twic@urchin.earth.li>
Newsgroups:
comp.lang.java.programmer
Date:
Thu, 21 Jan 2010 23:36:52 +0000
Message-ID:
<alpine.DEB.1.10.1001212334340.6698@urchin.earth.li>
On Sat, 16 Jan 2010, Daniel Pitts wrote:

Tom Anderson wrote:

What if the resource needed to perform a task, the thing you wanted to
maintain a limited pool of, reuse, and provide shared access to, was
more than a Thread?


The pattern you are asking about is called a Resource Pool. I wouldn't
combine the concept of Thread Pool with HttpClient Pool. They are
orthogonal concepts, so they should be accessible orthogonally.


Except there's a 1:1 relationship between threads and HttpClients. Yes,
you could write a task which looked like:

public void run() {
  HttpClient client = httpClientPool.acquire();
  // do stuff
  httpClientPool.release(client);
}

But that seems like unnecessary boilerplate. Still, it is actually less
code than my smartarse solution, so maybe it's the right answer.

It would deal gracefully with the case where a task needs no HttpClient,
or more than one, which mine doesn't. I wouldn't anticipate those being
common, though.

tom

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