dev@glassfish.java.net

Re: [GFv3] How do I get installDir location?

From: Tim Quinn <Timothy.Quinn_at_Sun.COM>
Date: Wed, 13 Aug 2008 15:32:26 -0500

Byron Nevins wrote:
> The Implementation of ServerEnvironment is problematic because there
> is plenty of functionality that is available in the impl. class but
> not in the interface. Therefore the impl class is used everywhere
> instead of the interface.
>
> Here's how you get at any such well-known properties:
>
> ServerEnvironmentImpl.getProps().get(SystemPropertyConstants.INSTALL_ROOT_PROPERTY);
>
>
> You could also just do System.getProperty(...) -- it is guaranteed to
> be there and correct -- if you used Launcher to startup the server.
> It is frowned upon though...
Of course, the module name in which we find ServerEnvironment is
telling: Public API of GlassFish v3.

If we truly intend this to be an interface which developers of new
containers can use, then if there is something they legitimately need
that is not present in the interface (or some other public interface)
then we should be adding it to the interface rather than "cheating" and
using the implementation directly or, worse, getting the property
directly... How well is that going to work in the embedded case??

Sahoo, just to satisfy my curiosity, did you want this location for
some particular purpose or did you just notice it was not exposed
through the interface and were curious why?

- Tim
>
>
> Sahoo wrote:
>> Why does ServerEnvironment not have an API t to provide the
>> install_dir location? This information is available in asenv.conf
>> file as the value of AS_INSTALL property.
>>
>> Thanks,
>> Sahoo
>>
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>