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From Christian Schneider <ch...@die-schneider.net>
Subject Re: [DISCUSS] Karaf 2.x and aliases for 3.x commands
Date Tue, 02 Oct 2012 16:32:37 GMT
We could do that but generally in a major release you expect breaking 
changes. So I think it is quite logic to
not have the aliases in Karaf 3 by default.

So how about adding the old aliases to Karaf 3 and allow to activate 
them with a command?


Am 02.10.2012 14:01, schrieb Jamie G.:
> +1, and yes the aliases are backwards - karaf 3 should support old namings.
> On Tue, Oct 2, 2012 at 9:24 AM, Guillaume Nodet <gnodet@gmail.com> wrote:
>> If we add a method to add all those aliases, it's easy to document and it
>> still provides compatibility for code snippets.  It's not very difficult to
>> add a warning "For karaf 2.x users, make sure you call enable-3x-aliases
>> before running those scripts".
>> I think it would really make the user experience better, as the whole goal
>> of completion is screwed in 2.x, which is what all our users use daily.
>> Btw, releasing 2.3.x with aliases to commands in 3.0.x which hasn't been
>> released is not really a good idea in theory, since 3.0.x could still
>> change.
>> In fact, I think aliases should be the opposite.  We should have added
>> backward compatible aliases in 3.0.x instead of adding forward compatible
>> aliases in 2.x.  That's usually how compatibility is done.
>> On Tue, Oct 2, 2012 at 1:08 PM, Christian Schneider <chris@die-schneider.net
>>> wrote:
>>> I think we should keep the aliases. The reason is that with the aliases we
>>> can describe commands for 2.x and 3.x in the same way. (For example in
>>> tutorials).
>>> So people starting with a fresh karaf can see the same behaviour for 2.x
>>> like for 3.x.
>>> Instead I propose to provide a way to switch the aliases off. This allows
>>> advanced users to switch the aliases off if they dont want them.
>>> Christian
>>> On 10/02/2012 10:26 AM, Guillaume Nodet wrote:
>>>> I want to start this discussion because I really find the aliases
>>>> annoying.
>>>> In karaf 2.2.x, we added a few aliases for bundle:xx, package:xx and
>>>> feature:xx commands and we are adding more into 2.3.x
>>>> I dislike them because they break the whole completion system we have.
>>>> If you type bun<tab>, it will complete to bundle and then stop because
>>>> have bundle:xx and bundles:xx commands.
>>>> If you then hit ':' as proposed, the command completion is not available
>>>> anymore because the completion system can't know about aliases arguments
>>>> (aliases are just functions, and no metadata is available for those).
>>>> So I'd like to disable aliases by default, and instead, define a single
>>>> function that could be called from the shell, or by default in
>>>> etc/shell.init.script, that would enable all the aliases.
>>>> So users could call this function (let's call it 'enable-3x-aliases') and
>>>> that would register all the aliases instead of having them enabled by
>>>> default.
>>>> Thoughts ?
>> --
>> ------------------------
>> Guillaume Nodet
>> ------------------------
>> Blog: http://gnodet.blogspot.com/
>> ------------------------
>> FuseSource, Integration everywhere
>> http://fusesource.com

Christian Schneider

Open Source Architect
Talend Application Integration Division http://www.talend.com

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