To get stdout from sqlplus in Ruby you can simply do
`sqlplus username/password@database @script.sql`
which will launch sqlplus and return output as result of this expression.

Can this gem execute a client side .sql file from ruby and return the stdout to a ruby variable? Much like I might use sqlplus?

Thanks for your help.

Cris

plsql.connection = conn

before trying to call plsql.big_letter

I would like to connect with my database through ruby-plsql.
But when I try to execute my stored function I get an error ‘No PL/SQL connection’.

Everything is ok when I select data from oracle database directly through oci8:

irb(main):001:0> require ‘oci8′
=> true
irb(main):002:0> require ‘ruby_plsql’
=> true
irb(main):003:0> conn=OCI8.new(‘myusername’,'mypaswd’,'mydatabase’)
=> #<OCI8:0xded9e98 @privilege=nil, @prefetch_rows=nil, @ctx=[0, #, nil, 65535], @svc=#>
irb(main):004:0> conn.exec(’select description1 from gi_blacklists’) do |r|
irb(main):005:1* puts r
irb(main):006:1> end
WPIS NA PODST ROSZCZENIA 14341.
WPIS NA PODST ROSZCZENIA 19482.
WPIS NA PODST ROSZCZENIA 9521.
WPIS NA PODST ROSZCZENIA 6189.
WPIS NA PODST ROSZCZENIA 1783.
WPIS NA PODST ROSZCZENIA 3141.
WPIS NA PODST ROSZCZENIA 21395.
=> 7

I’ve created a stored function big_letter:
CREATE OR REPLACE
FUNCTION gi.big_letter (p_str IN VARCHAR2)
RETURN VARCHAR2
IS
BEGIN
RETURN UPPER (p_str);
END;
/

Now, I try to call this function in ruby:

irb(main):007:0> puts plsql.big_letter(‘ala ma kota’)
ArgumentError: No PL/SQL connection
from C:/Ruby/lib/ruby/gems/1.8/gems/ruby-plsql-0.3.1/lib/plsql/schema.rb:112:in `method_missing’
from (irb):7
from :0

Am I doing anything wrong?
Thanks in advance

Cursor and complex record type implementation is not so easy to be done as these types cannot be easily mapped to Ruby objects. As I typically use ruby-plsql for PL/SQL API packages which have just numbers, dates and strings as parameters I do not have such urgent need for other data types so therefore most probably I will not do this in nearest future. But if you have any patch or idea how to do it I would be glad to accept it :)

Btw, in windows, the path is accessed through ENV["Path"] (note mixed case).

Thanks for the great gem!

-James.

One workaround would be that before requiring ruby_plsql you put:
ENV["PATH"] ||= “”
which will initialize ENV["PATH"] to empty string if it is nil.

Also in this case please copy ojdbc14.jar (Oracle JDBC driver) in %JRUBY_HOME%/lib directory. ruby_plsql is trying at first to find ojdbc14.jar in PATH but if it cannot find it then it should be located in lib directory under JRuby installation.

It seems to be that the ENV["PATH"] is returning nil. I wonder why that is- my jruby/bin directory is in my path.

Any ideas? Could it be a windows specific problem?

-James

plsql.connection = ActiveRecord::Base.connection.raw_connection.connection

In next release I am going to make it simpler to specify that you want to use ActiveRecord connection, I know that current way looks too complex :)

BTW I also recommend to put this initialization either in environment.rb or event better in some special initializer file in config/initializers directory. It is not a good practice to put such initialization code in one particular controller.