JRuby Oracle connection failing - ruby-on-rails

Question

I am following a tutorial to establish ojdbc connection in JRuby so that I can execute some SQL statements. But it is failing to connect to the database. Below are the steps:
Copied ojdbc6.jar under working directory where the ruby files reside.
Created oracle_connection.rb file
Create test_connection.rb file as the driver class
oracle_connection.rb
require 'java'
require 'ojdbc6.jar'
java_import 'oracle.jdbc.OracleDriver'
java_import 'java.sql.DriverManager'
class OracleConnection
#conn = nil
#user = nil
#pwd = nil
def initialize(user, pwd, url)
#user = user
#pwd = pwd
#url = url
#Load driver class
ora_driver = OracleDriver.new
DriverManager.registerDriver ora_driver
#conn = DriverManager.get_connection url, user, pwd
#conn.auto_commit = false
end
#Add getters and setters for all attributes we wish to expose
attr_reader :user, :pwd, :url, :connection
def close_connection()
#conn.close() unless #conn
end
def prepare_call(call)
#conn.prepare_call call
end
def create_statement()
#conn.create_statement
end
def prepare_statement(sql)
#conn.prepare_statement sql
end
def commit()
#conn.commit
end
def to_s
"OracleConnection [user=#{#user}, url=#{#url}]"
end
alias_method :to_string, :to_s
end
#test_connection.rb
require 'oracle_connection'
#Edit these for your database schema
user = "ABC"
pwd = "EFG"
url = "jdbc:oracle:thin:#host_name:1520/db_instance"
print "Run at #{Time.now} using JRuby #{RUBY_VERSION}\n\n"
begin
conn = OracleConnection.new.create(user, pwd, url)
puts conn, "\n"
end
print "\nEnded at #{Time.now}\n"
While running test_connection.rb, I see the below error:
ruby test_connection.rb
Run at 2013-09-16 10:11:05 -0700 using JRuby 1.9.2
NoMethodError: undefined method `create' for OracleConnection:Class
(root) at test_connection.rb:11
I don't know what is causing the problem. Guidance on this is really appreciated. Thanks!

Answer 1

In "test_connection.rb" I was calling "create" method whereas in OracleConnection class "create" method is not defined. Hence it was failing.
Replacing conn = OracleConnection.new.create(user, pwd, url) with conn = OracleConnection.new(user, pwd, url) fixes the issue.
Below I am re-writing the working test_connection.rb
#test_connection.rb
require 'oracle_connection'
#Edit these for your database schema
user = "ABC"
pwd = "EFG"
url = "jdbc:oracle:thin:#host_name:1520/db_instance"
print "Run at #{Time.now} using JRuby #{RUBY_VERSION}\n\n"
begin
conn = OracleConnection.new(user, pwd, url)
puts conn, "\n"
end
print "\nEnded at #{Time.now}\n"