loading a gem (hpricot) which requires a jar not working in webstart with
jrubygems
-----------------------------------------------------------------------------------
Key: JRUBY-2034
URL: http://jira.codehaus.org/browse/JRUBY-2034
Project: JRuby
Issue Type: Bug
Components: Miscellaneous
Affects Versions: JRuby 1.1
Environment: MacOS 10.4.11, Java 1.5.0_13, JRuby trunk rev 5716
Reporter: Stephen Bannasch
Priority: Critical
I've got a patched trunk version of jrubygems working with webstart and I can
use a simple gem like uuidtools but I hpricot throws an error when hpricot.rb
executes this statement:
{code}
require 'hpricot_scan'
{code}
Which when run in JRuby actually requires this:
{code}
require 'universal-java1.5/hpricot_scan.jar'
{code}
Nick Seiger commented:
bq. The hpricot gem metadata adds the universal-java1.5 directory to the load
path, so JRuby is just translating "require 'hpricot_scan'" into a request to
load up hpricot_scan.jar and look for a class called HpricotScanService. Looks
like that (loading additional jars in a new classloader) isn't working under
web start?
Here's the stack trace:
{code}
Installing gem from Java classpath
jar:file:/Users/stephen/Library/Caches/Java/cache/javaws/file/D/P-1/signed-jars/RMgems.jar!/gems/hpricot-0.6.159-jruby.gem
to /Users/stephen/.jruby/lib/ruby/gems/1.8.
=> true
irb(main):006:0> require 'hpricot'
LoadError: IO error -- hpricot_scan
from
/Users/stephen/.jruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require'
from
/Users/stephen/.jruby/lib/ruby/gems/1.8/gems/hpricot-0.6.159-java/lib/hpricot.rb:20
from
/Users/stephen/.jruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require'
from
/Users/stephen/.jruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require'
from (irb):7:in `signal_status'
{code}
I'm using Alon Salont's trunk release of jrubygems:
http://www.carbonfive.com/community/archives/2008/01/jrubygems_relea_1.html
to deliver a set of gems to my jruby web start program.
His code needed this patch to work with web start:
{code}
Index: ruby/lib/jrubygems.rb
===================================================================
--- ruby/lib/jrubygems.rb (revision 295)
+++ ruby/lib/jrubygems.rb (working copy)
@@ -90,7 +90,7 @@
FileUtils.mkdir_p gem_dir
installer = Gem::Installer.new(gem_source.absolute_path)
- installer.install(true, @install_dir)
+ installer.install
Gem.source_index.refresh!
end
{code}
I'm also using hpricot from svn trunk and need to apply this patch to get
hpricot to work at all in jruby:
* http://caldersphere.net/hpricot-0.6.157-jruby-trunk.patch
See:
* http://code.whytheluckystiff.net/hpricot/ticket/131
* http://jira.codehaus.org/browse/JRUBY-2008
The jnlp is very similar to samples/jirb except that the jars are signed and
have been copied to a child directory of where the jnlpfile is stored. Here's
what the jnlp file looks like:
{code}
<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="file:.">
<!-- Create a signed version of jruby-complete.jar and
place a copy in the same directory as this program.
Test this program: javaws signed_jirb.jnlp -->
<information>
<title>JRuby IRB Console</title>
<vendor>The JRuby Team</vendor>
<description>Sample WebStart Application with JRuby</description>
<description kind="short">JRuby IRB Console Sample</description>
<homepage href="http://jruby.codehaus.org/"/>
<offline-allowed/>
</information>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="1.5+"/>
<jar href="signed-jars/jruby-complete.jar" download="eager" main="false"/>
<jar href="signed-jars/jrubygems-0.3-SNAPSHOT.jar" download="eager"
main="false"/>
<jar href="signed-jars/gems.jar" download="eager" main="false"/>
</resources>
<application-desc main-class="org.jruby.demo.IRBConsole">
</application-desc>
</jnlp>
{code}
Using the uuid gem works:
{code}
require 'jrubygems'
gem 'uuidtools'
require 'uuidtools'
UUID.timestamp_create().to_s
=> "4c3f3990-cb01-11dc-b730-001b631eb2da"
{code}
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