Jirb: require java => false?

Ruby
1

Hello all,

Ok I’m new to the ruby world and a complete newbie in jruby/java so
I’m probably being dump but what is wrong here? Why isn’t require
‘java’ working and 2nd (probably be fixed I guess when require java
works) why is require_gem an undefined method??

Cheers,

Paul

Code:
/local/Ruby> echo $JAVA_HOME
/local/jdk1.6.0_05
:/local/Ruby> echo $JRUBY_HOME
/local/Ruby/Jruby/jruby-1.1RC3/

:/local/Ruby> jirb --version
irb 0.9.5(05/04/13)
irb(main):001:0> require ‘java’
=> false
irb(main):002:0> include Java
=> Object
require ‘rubygems’
=> true

require_gem ‘ActiveRecord-JDBC’
NoMethodError: undefined method require_gem' for main:Object from (irb):7:insignal_status’

2

On Tue, Mar 25, 2008, PB0711 wrote:

Ok I’m new to the ruby world and a complete newbie in jruby/java so
I’m probably being dump but what is wrong here? Why isn’t require
‘java’ working and 2nd (probably be fixed I guess when require java
works) why is require_gem an undefined method??

#require returns false when the file has already been loaded. This
means that java has already been required before you tell it to do so.

If it had really failed it would have raised an exception.

I can’t shed any light on the other problem, though :slight_smile:

Ben

3

On Mon, Mar 24, 2008 at 12:39 PM, PB0711 [email protected] wrote:

irb(main):002:0> include Java
=> Object
require ‘rubygems’
=> true

require_gem ‘ActiveRecord-JDBC’
NoMethodError: undefined method require_gem' for main:Object from (irb):7:in signal_status’

“require_gem” is an obsolete method in Rubygems, the new one is just
“gem”. Also, since you’re using RC3, you probably want to use
activerecord-jdbc-adapter 0.8 instead…

/Nick