Stored Proc return codes in Sequel

gistfile1.rb

def self.return_code_test
  return_code = @db.synchronize do |conn|

    stmnt = conn.prepareCall('{ ? = call dbo.sp_tmp_stu_sequel_test() }')
    stmnt.registerOutParameter(1, java::sql::Types::INTEGER)
    stmnt.execute
    # output parameters have not yet been processed, must call getMoreResults() first.
    stmnt.getMoreResults  
    stmnt.getInt(1)
  end

  p "stored proc return code: #{return_code}"
end