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Posted to legal-discuss@apache.org by Trustin Lee <tr...@gmail.com> on 2005/02/05 17:46:32 UTC
About Doug Lea's concurrent package.
Hi,
I'm trying to use Doug Lea's concurrent package in my project (MINA
subproject under Directory project). I looked for the license
statement of that package, but I could not find any formal license
statment. Am I missing something here, or shouldn't I use it in ASF
projects?
Thanks,
Trustin
--
what we call human nature is actually human habit
--
http://gleamynode.net/
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Re: About Doug Lea's concurrent package.
Posted by Justin Erenkrantz <ju...@erenkrantz.com>.
On Sat, Feb 05, 2005 at 01:29:11PM -0500, Henri Yandell wrote:
> * Public Domain: Antlr and Doug Lea's concurrency package are OK
Doug's page says:
http://gee.cs.oswego.edu/dl/classes/EDU/oswego/cs/dl/util/concurrent/intro.html
---
All classes are released to the public domain and may be used for any purpose
whatsoever without permission or acknowledgment. Portions of the
CopyOnWriteArrayList and ConcurrentReaderHashMap classes are adapted from Sun
JDK source code. These are copyright of Sun Microsystems, Inc, and are used
with their kind permission, as described in this license.
....
Can I use this code in commercial products?
Yes. Many people appear to do so.
Do I need a license to use it? Can I get one?
No!
Can I get commercial support for this package?
I don't know of any place to get it. I can't think of any technical reason
that you'd want it."
---
The Sun license he refers to is:
http://gee.cs.oswego.edu/dl/classes/EDU/oswego/cs/dl/util/sun-u.c.license.pdf
While Doug's comments might not be quite enough for the exact legal
requirements of public domain, I think we can in good faith accept his terms
and use it per his above statements without too much worry.
While a technical issue, Doug now appears to recommend:
http://www.mathcs.emory.edu/dcl/util/backport-util-concurrent/
instead as it is a backport of the Concurrency packages in Java 5. So, you
get upwards compatibility for free. The new package specifically refers to
the following license:
http://creativecommons.org/licenses/publicdomain/
The Creative Commons public domain dedication is much clearer and legally
sound. So, from a licensing standpoint, the new package is also better.
HTH. -- justin
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Re: About Doug Lea's concurrent package.
Posted by Henri Yandell <ba...@generationjava.com>.
While we lack an official legal page, we've a bunch of unofficial ones
floating around:
http://wiki.apache.org/old/Licensing (which I've tried to summarise on
http://wiki.apache.org/jakarta/LicenceIssues).
It says:
* Public Domain: Antlr and Doug Lea's concurrency package are OK
but marks the block it is in as coming from comments on
community@apache.org and being unofficial until something's said by the board.
It's being used by a fair set of apache projects already:
(http://brutus.apache.org/gump/public/dougLea/concurrent/details.html). So
unless someone says otherwise, I'd go ahead and use it.
Hen
On Sun, 6 Feb 2005, Trustin Lee wrote:
> Hi,
>
> I'm trying to use Doug Lea's concurrent package in my project (MINA
> subproject under Directory project). I looked for the license
> statement of that package, but I could not find any formal license
> statment. Am I missing something here, or shouldn't I use it in ASF
> projects?
>
> Thanks,
> Trustin
> --
> what we call human nature is actually human habit
> --
> http://gleamynode.net/
>
> ---------------------------------------------------------------------
> DISCLAIMER: Discussions on this list are informational and educational
> only, are not privileged and do not constitute legal advice.
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: legal-discuss-unsubscribe@apache.org
> For additional commands, e-mail: legal-discuss-help@apache.org
>
>
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