Re: Java, JRuby, and Eclipse

On Sun, 05 Feb 2006, Rich Morin defenestrated me:
>
> I've been able to download and run a few Java programs
> without much pain, but it looks like I'm going to start
> using some Java apps (eg, the Pentaho BI Platform) more
> seriously.
> 
> It would be great to have a good support environment to
> help me tweak things, make changes, and rebuild World +
> Dog without needing to grok the entire pile of software.
> It would also be really cool to be able to interact eith
> the code from irb, rather than Java.
> 
> So, given some relatively typical humongous Java app:
> 
>   *  How likely is it that I could use Eclipse to build
>      it, explore the code, etc?  Is this generally a
>      worthwhile thing to try?

  I think all the active developers use eclipse.  Navigating
through the code or using the debugger is straight forward.

  I always build jruby outside of eclipse.  That is one odd
thing (it does not make the jar).  I cannot remember why that
is.  Someone else may be building from within eclipse.  For
me, that has not been a problem since I am constantly running
JRuby from a command-line to test stuff.

>   *  How hard is it likely to be to add JRuby to the mix,
>      in a way that would allow me to call arbitrary Java
>      methods from irb, etc?

  irb does not work.  I can think of two reasons:
1. We have no answer to terminal in Java (unless we make some
sort of swing app fire up when terminal or readline are used).
2. I believe irc requires callcc...which we do not support yet

-Tom

-- 
+ http://www.tc.umn.edu/~enebo +---- mailto:enebo@xxxxxxx ----+
| Thomas E Enebo, Protagonist  | "Luck favors the prepared    |
|                              |  mind." -Louis Pasteur       |


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