DanKnox / crate_ruby

Client Libraries for Ruby

CrateRuby

Official Ruby library to access the Crate.IO database.

Installation

This gem requires Ruby 2.0 or greater.

Add this line to your application's Gemfile:

gem 'crate_ruby'

Or install it yourself as:

$ gem install crate_ruby

Usage

Issuing SQL statements

require 'crate_ruby'

client = CrateRuby::Client.new

result = client.execute("Select * from posts")
 => #<CrateRuby::ResultSet:0x00000002a9c5e8 @rowcount=1, @duration=5>

result.each do |row|
  puts row.inspect
end
 => [1, "test", 5]

result.cols
 => ["id", "my_column", "my_integer_col"]

Using parameter substitution

 client.execute("INSERT INTO posts (id, title, tags) VALUES (\$1, \$2, \$3)",
                 [1, "My life with crate", ['awesome', 'freaky']])

Up/Downloading data

digest = Digest::SHA1.file(file_path).hexdigest

# upload
f = File.read(file_path)
client.blob_put(table_name, digest, f)

# download
data = client.blob_get(table_name, digest)
open(file_path, "wb") do |file|
  file.write(data)
end

# deletion
client.blob_delete(table_name, digest)

Tests

First, download and install Crate locally:

ruby spec/bootstrap.rb

Then run tests with:

bundle exec rspec spec

Contributing

If you think something is missing, either create a pull request or log a new issue, so someone else can tackle it. Please refer to CONTRIBUTING.rst for further information.

Maintainer

• CRATE Technology GmbH
• Christoph Klocker, @corck

License & Copyright

See LICENSE for details.