Transform jRuby code in Ruby code

Question

i have this code:

require 'java'
require 'iText-5.0.6.jar'

module Pdf
  include_package "com.itextpdf.text.pdf"
  include_package "java.io"

  def self.write
    reader = PdfReader.new('application.pdf');
    stamper = PdfStamper.new(reader, FileOutputStream.new('completed.pdf'))
    form = stamper.acro_fields
    puts "Form has these fields: #{form.fields.key_set.to_a}"
    form.set_field("some_zipcode_field", "94115")
    stamper.close
  end
end

Pdf.write

in jRuby and i want to translate to Ruby, using rjb

anyone nows how can i do that?

for those that still dont understand... i cant use jruby on production, thats why i need RJB to use jruby code. but i dont now how to do that... — Nicos Karalis
– Nicos Karalis, Commented Sep 18, 2011 at 19:34

Charles Oliver Nutter · Accepted Answer · 2011-09-15 17:03:34Z

2

It's possible to use libraries like iText from regular Ruby via "RJB", the Ruby-Java bridge. I do not know the proper sequence of calls in RJB to make that happen, but it is possible and I know of folks doing it.

An alternative would be to use the pure-Ruby "prawn" library, which would work the same on both JRuby and Ruby

answered Sep 15, 2011 at 17:03

Charles Oliver Nutter

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2 Comments

Nicos Karalis Over a year ago

ive tried prawn at first, but prawn doesnt allow me to create a pdf from a template, thats why im using iText

Nicos Karalis Over a year ago

And besides I want to fill a PDF form, which, using prawn I did not found any way of how to do it.

robbrit · Accepted Answer · 2011-09-15 16:49:56Z

0

If you're using a Java library like iText then you can't. You'll need to modify the code to use a different PDF library in order for it to work in C Ruby.

answered Sep 15, 2011 at 16:49

robbrit

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Comments

Thomas Enebo · Accepted Answer · 2011-09-15 17:09:17Z

0

Obviously, the rjb site will help with more specifics RJB. Unfortunately, I don't think it covers all of its features.

I don't think you can load whole packages in RJB, but since you are only using a handful of classes you can do individual imports:

JString = Rjb::import('java.lang.String')

I also think Rjb does not have all the shortcut aliases for Java methods so you may end up needing to setField instead of set_field or field=. I am not an Rjb user, but I would really like to collaborate with Rjb to make our two syntaxes more compatible. [note: You might want to challenge this advice when you get Rjb set up...I just have never seen an example with the shortcuts in them]

answered Sep 15, 2011 at 17:09

Thomas Enebo

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