similar to: Using RJB in a Rails 3 app?

Hi, For those who might not be aware, rjb is a killer gem for using java classes inside your rails app (or any ruby code). Check it out at: http://rubyforge.org/projects/rjb/ I was able to successfully use it in one of my apps that required some code that is only available in java. And it''s much nicer than having to compile a java app, then shell out using backticks, get back the return

Greetings. I am trying to list all keys in a java.util.HashMap field. The Java code to do this looks like: # Collection c = hMap.values(); # # //obtain an Iterator for Collection # Iterator itr = c.iterator(); # # //iterate through HashMap values iterator # while(itr.hasNext()) System.out.println(itr.next()); So, I took a stab at the ruby version: # I have a java hashmap called fields

Heya all -- I recently downloaded the RJB 1.1.1 gem, and the install seemed to go fine. However, when I try to require ''rjb'' I get the following error: no such file to load -- rjb Has anyone seen this before? Any thoughts what it could be? Thanks so much! -Lucas -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this

Hello, I''m having some problems when try to install rjb i get this message C:\Users\PC1090\Documents\RJB\rjb-1.3.8>ruby setup.rb config ---> bin <--- bin ---> lib <--- lib ---> ext C:/Ruby187/Ruby1.8.7/bin/ruby "C:/Users/PC1090/Documents/RJB/rjb-1.3.8/ext/extconf.rb" checking for jni.h... no *** C:/Users/PC1090/Documents/RJB/rjb-1.3.8/ext/extconf.rb failed

I have the need to take existing PDFs and populate them with data entered via HTML forms. Data saved to database, entered in to PDF file, PDF file with data archived, and then distributed va email and/ or download. The languuage I previous did all my web work in, Lasso, had this stuff built in, but it appears not to be so with Ruby or Rails. The latest info I can find on this is a year

I am trying to do file i/o with rails and rjb and can''t figure out a way to make this work. Here''s what I am trying to do: - a user uploads an image to the server via a standard html form: <%= file_field("blog", "attach") %> - this returns a ruby File object to the controller in params[:blog][:attach]

I MAY be able to derive something out of the present example given here : http://blog.codeinmotion.com/index.php/2006/12/22/pdf-generation-in-ruby-on-rails/ but this deals with filling out forms. Is there a simpler example that just allows you to talk to itext , send it some plain text and get back a pdf and then send that pdf to the user as downloadable / renderable data? -- Posted via

Folks, I'm a bit puzzled by the fact that if I generate 100,000 standard normal variates using rnorm() and perform the Jarque-Bera on the resulting vector, I get p-values that vary drastically from run to run. Is this expected? Surely the p-val should be close to 1 for each test? Are 100,000 variates sufficient for this test? Or is it that rnorm() is not a robust random number generator?

All, I am attempting to use RJB (Java-Ruby Bridge - see: http://arton.no-ip.info/collabo/backyard/?RubyJavaBridge) in my Rails app. The documentation says: "Both LD_LIBRARY_PATH and JAVA_HOME setting required in environment.rb file of RoR." However, it doesn''t say _how_ to set these variables in environment.rb. I''ve tried JAVA_HOME =

Help! On my Mac dev machine, everything works, and obviously on my Debian production server something is wrong. I set JAVA_HOME and LD_LIBRARY_PATH in environment.rb, but it''s still blocked. Anyone has experience with rjb? -- Posted via http://www.ruby-forum.com/.

I am trying to do file i/o with rails and rjb and can''t figure out a way to make this work. Here''s what I am trying to do: - a user uploads an image to the server via a standard html form: <%= file_field("blog", "attach") %> - this returns a ruby File object to the controller in params[:blog][:attach] - then I need to convert this into a Java

In production I''ve setup a mongrel cluster of 2 servers. Now I''m using RJB(ruby java bridge). So I need certain java environment variables set before mongrel starts. So I set them: export LD_LIBRARY_PATH=/usr/java/jdk1.6.0/jre/lib/i386/:/usr/java/jdk1.6.0/jre/lib/i386/client/:./ export JAVA_HOME=/usr/java/jdk1.6.0/ Then I run "mongrel_rails cluster::start". Now

Hello, I''m a beginner, so any hints are appreciated; I''m still trying to find my way around Rails code. For a bug I''ve found I need to create a table called "values" so I added this: create_table :values do |t| t.integer :value end among the other table creations in activerecord/test/cases/migration_test.rb. Is that ok? But then, when I run the tests

hi all, This may seem trivial and stupid to the experts , but i have been at it for over 2 weeks and all answers got from forums did not help with resolving the issue. Even using cygwin didn''t help , i get the same errors. I''m working on a windows- rails combination and am trying trying to setup an existing application which uses a plethora of gems. I''m done with about

I am still attempting to figure out how to send an Itext generated pdf Document to the browser. I am looking at the following blog posting where someone is using jruby and iText to create a pdf file and then sending it to the browser : http://codersifu.blogspot.com/2007/06/howto-generate-pdf-files-in-ruby-on.html Unlike the above example I am using only ruby / on rails. I would like to do

Hi all, In several of the transformations I'm working on I need to embed the logical equivalent of puts/printf/etc. calls inline with code. I am having some difficulties getting the transformation code right. As I understand it, I should be creating a ConstantArray based on the string (in this case I'm taking an instruction, 'disassembling' it to an ostringstream then turning

Hi all, I''m asking this question from the standpoint of a developer with almost 10 years experience with Microsoft technologies, mostly doing server side component and database work. So, I''m not very familiar with the java world. Can anyon tell me how/if java development can complement Ruby on Rails development? I''m not interested in how java can duplicate Rails

Hi, Does anyone know of a package that will help with generation of spreadsheets? (xls files, not csv) Thanks, Fredrik --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe

Hi All , I have written java code ( This java code will not return any thing but it will do action ) which is required call from ruby , please let me what is best way to achieve this ? Thanks , Muthu Selvan SR -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from

I''m following the instructions on installing Selenium on rails: "Run the Rakefile in the plugin???s directory to run the tests in order to see that everything works" When I rake: DKMac:selenium-on-rails DK$ rake test I get the following error: /Users/DK/.rvm/gems/ruby-1.8.7-p174/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:105:in `const_missing'':