Object
The RightAws::ActiveSdb class provides a complete interface to Amazon's Simple Database Service.
ActiveSdb is in alpha and does not load by default with the rest of RightAws. You must use an additional require statement to load the ActiveSdb class. For example:
require 'right_aws' require 'sdb/active_sdb'
Additionally, the ActiveSdb class requires the 'uuidtools' gem; this gem is not normally required by RightAws and is not installed as a dependency of RightAws.
Simple ActiveSdb usage example:
class Client < RightAws::ActiveSdb::Base end # connect to SDB RightAws::ActiveSdb.establish_connection # create domain Client.create_domain # create initial DB Client.create 'name' => 'Bush', 'country' => 'USA', 'gender' => 'male', 'expiration' => '2009', 'post' => 'president' Client.create 'name' => 'Putin', 'country' => 'Russia', 'gender' => 'male', 'expiration' => '2008', 'post' => 'president' Client.create 'name' => 'Medvedev', 'country' => 'Russia', 'gender' => 'male', 'expiration' => '2012', 'post' => 'president' Client.create 'name' => 'Mary', 'country' => 'USA', 'gender' => 'female', 'hobby' => ['patchwork', 'bundle jumping'] Client.create 'name' => 'Mary', 'country' => 'Russia', 'gender' => 'female', 'hobby' => ['flowers', 'cats', 'cooking'] sandy_id = Client.create('name' => 'Sandy', 'country' => 'Russia', 'gender' => 'female', 'hobby' => ['flowers', 'cats', 'cooking']).id # find all Bushes in USA Client.find(:all, :conditions => ["['name'=?] intersection ['country'=?]",'Bush','USA']).each do |client| client.reload puts client.attributes.inspect end # find all Maries through the world Client.find_all_by_name_and_gender('Mary','female').each do |mary| mary.reload puts "#{mary[:name]}, gender: #{mary[:gender]}, hobbies: #{mary[:hobby].join(',')}" end # find new russian president medvedev = Client.find_by_post_and_country_and_expiration('president','Russia','2012') if medvedev medvedev.reload medvedev.save_attributes('age' => '42', 'hobby' => 'Gazprom') end # retire old president Client.find_by_name('Putin').delete # Sandy disappointed in 'cooking' and decided to hide her 'gender' and 'country' () sandy = Client.find(sandy_id) sandy.reload sandy.delete_values('hobby' => ['cooking'] ) sandy.delete_attributes('country', 'gender') # remove domain Client.delete_domain
Create new domain. Raises no errors if the domain already exists.
RightAws::ActiveSdb.create_domain('alpha') #=> {:request_id=>"6fc652a0-0000-41d5-91f4-3ed390a3d3b2", :box_usage=>"0.0055590278"}
# File lib/sdb/active_sdb.rb, line 136 def create_domain(domain_name) connection.create_domain(domain_name) end
Remove domain from SDB. Raises no errors if the domain does not exist.
RightAws::ActiveSdb.create_domain('alpha') #=> {:request_id=>"6fc652a0-0000-41c6-91f4-3ed390a3d3b2", :box_usage=>"0.0055590001"}
# File lib/sdb/active_sdb.rb, line 145 def delete_domain(domain_name) connection.delete_domain(domain_name) end
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