ruby

trilogy

Ruby bindings to the Trilogy client library

Installation

Add this line to your application's Gemfile:

gem 'trilogy'

And then execute:

$ bundle

Or install it yourself as:

$ gem install trilogy

Usage

client = Trilogy.new(host: "127.0.0.1", port: 3306, username: "root", read_timeout: 2)
if client.ping
  client.change_db "mydb"

  result = client.query("SELECT id, created_at FROM users LIMIT 10")
  result.each_hash do |user|
    p user
  end
end

Processing multiple result sets

In order to send and receive multiple result sets, pass the multi_statement option when connecting. Trilogy#more_results_exist? will return true if more results exist, false if no more results exist, or raise an error if the respective query errored. Trilogy#next_result will retrieve the next result set, or return nil if no more results exist.

client = Trilogy.new(host: "127.0.0.1", port: 3306, username: "root", read_timeout: 2, multi_statement: true)

results = []
results << client.query("SELECT name FROM users WHERE id = 1; SELECT name FROM users WHERE id = 2")
results << client.next_result while client.more_results_exist?

Building

You should use the rake commands to build/install/release the gem For instance:

bundle exec rake build

Contributing

The official Ruby bindings are inside of the canonical trilogy repository itself.

1. Fork it ( https://github.com/trilogy-libraries/trilogy/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

mysql2 gem compatibility

The trilogy API was heavily inspired by the mysql2 gem but has a few notable differences:

• The query_flags don't inherit from the connection options hash. This means that options like turning on/of casting will need to be set before a query and not passed in at connect time.
• For performance reasons there is no application_timezone query option. If casting is enabled and your database timezone is different than what the application is expecting you'll need to do the conversion yourself later.
• While we still tag strings with the encoding configured on the field they came from - for performance reasons no automatic transcoding into Encoding.default_internal is done. Similarly to not automatically converting Time objects from database_timezone into application_timezone, we leave the transcoding step up to the caller.
• There is no as query option. Calling Trilogy::Result#each will yield an array of row values. If you want a hash you should use Trilogy::Result#each_hash.