gem list

C:\development\spaces\workspace\vigil>gem list

*** LOCAL GEMS ***

actionmailer (2.3.4)
actionpack (2.3.4)
active_documentum (0.3.0)
activerecord (2.3.4)
activerecord-jdbc-adapter (0.9.2)
activerecord-jdbcsqlite3-adapter (0.9.2)
activeresource (2.3.4)
activesupport (2.3.4)
addressable (2.1.1)
Antwrap (0.7.0)
archive-tar-minitar (0.5.2)
aslakhellesoy-ansicolor (1.0)
bitescript (0.0.4)
builder (2.1.2)
buildr (1.3.5)
capistrano (2.5.9)
cucumber (0.4.3)
data_objects (0.10.0)
diff-lcs (1.1.2)
dm-core (0.10.1)
do_jdbc (0.10.0)
do_sqlite3 (0.10.0)
extlib (0.9.13)
fastercsv (1.5.0)
gem_plugin (0.2.3)
gemcutter (0.1.6)
git (1.2.5)
haml (2.2.13)
highline (1.5.1)
hoe (2.3.3)
jdbc-sqlite3 (3.6.3.054)
jnunemaker-validatable (1.8.1, 1.8.0, 1.7.2)
jruby-jars (1.4.0)
jruby-openssl (0.5.2)
json_pure (1.2.0)
log4r (1.1.2)
mongo (0.16)
mongo_mapper (0.5.8)
mongodb-mongo (0.14.1)
mongomapper (0.4.2)
mongrel (1.1.5)
net-scp (1.0.2)
net-sftp (2.0.2)
net-ssh (2.0.15)
net-ssh-gateway (1.0.1)
polyglot (0.2.9)
prawn (0.5.1)
prawn-core (0.5.1)
prawn-format (0.2.1)
prawn-layout (0.2.1)
rack (1.0.1)
rails (2.3.4)
rake (0.8.7)
rest-client (1.0.3)
rspec (1.2.9, 1.2.8)
ruby2java (0.0.2)
rubyforge (2.0.3, 1.0.5)
rubygems-update (1.3.5)
rubyzip (0.9.1)
sequel (3.6.0)
sinatra (0.9.4)
sources (0.0.1)
technicalpickles-jeweler (1.2.1)
term-ansicolor (1.0.4)
test-spec (0.10.0)
thoughtbot-shoulda (2.10.2)
treetop (1.4.2)
warbler (0.9.14)
xml-simple (1.0.12)
ZenTest (4.1.4)

gistfile3.txt

C:\development\spaces\workspace\vigil>jruby test_dm.rb
c:/development/langs/jruby-1.3.1/bin/../lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require': no such file to load -- do_jdbc_internal (LoadError)
        from c:/development/langs/jruby-1.3.1/bin/../lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
        from C:/development/langs/jruby-1.3.1/lib/ruby/gems/1.8/gems/do_jdbc-0.10.0-java/lib/do_jdbc.rb:4
        from C:/development/langs/jruby-1.3.1/lib/ruby/gems/1.8/gems/do_jdbc-0.10.0-java/lib/do_jdbc.rb:31:in `require'
        from c:/development/langs/jruby-1.3.1/bin/../lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
        from C:/development/langs/jruby-1.3.1/lib/ruby/gems/1.8/gems/do_sqlite3-0.10.0-java/lib/do_sqlite3.rb:3
        from C:/development/langs/jruby-1.3.1/lib/ruby/gems/1.8/gems/do_sqlite3-0.10.0-java/lib/do_sqlite3.rb:36:in `require'
        from c:/development/langs/jruby-1.3.1/bin/../lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `require'
        from C:/development/langs/jruby-1.3.1/lib/ruby/gems/1.8/gems/dm-core-0.10.1/lib/dm-core/adapters/sqlite3_adapter.rb:3
        from C:/development/langs/jruby-1.3.1/lib/ruby/gems/1.8/gems/dm-core-0.10.1/lib/dm-core/adapters/sqlite3_adapter.rb:31:in `require'
        from c:/development/langs/jruby-1.3.1/bin/../lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
        from C:/development/langs/jruby-1.3.1/lib/ruby/gems/1.8/gems/dm-core-0.10.1/lib/dm-core/adapters.rb:121:in `load_adapter'
        from C:/development/langs/jruby-1.3.1/lib/ruby/gems/1.8/gems/dm-core-0.10.1/lib/dm-core/adapters.rb:101:in `adapter_class'
        from C:/development/langs/jruby-1.3.1/lib/ruby/gems/1.8/gems/dm-core-0.10.1/lib/dm-core/adapters.rb:13:in `new'
        from C:/development/langs/jruby-1.3.1/lib/ruby/gems/1.8/gems/dm-core-0.10.1/lib/dm-core.rb:171:in `setup'
        from test_dm.rb:12

test_dm.rb

require 'rubygems'
require 'dm-core'

class Host
  include DataMapper::Resource
  
  property :id, Serial
  property :url, String
end

# do datamapper setup
DataMapper.setup(:default, 'sqlite3::memory:') # Throws error here
DataMapper.auto_migrate!