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Rails on Oracle 2011

Raimonds Simanovskis
Raimonds Simanovskis
Raimonds SimanovskiseazyBI founder and core developer at eazyBI

RailsConf 2011 BoF session "Rails on Oracle" slides

Rails on Oracle 2011

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Rails on Oracle
Raimonds Simanovskis


       github.com/rsim




          @rsim
Self-promotion :)   eazybi.com
How to contribute to
  ActiveRecord
 Oracle enhanced
     adapter
Main components
                          Rails 3.x
                          build query
 ActiveRecord                                   Arel
                               SQL
                                        Arel::Visitors::Oracle
               execute
     results




OracleEnhancedAdapter

      ActiveRecord::
   ConnectionAdapters::
     AbstractAdapter
What Oracle Enhanced
      adapter does
  database         metadata       custom CUD
 connection        queries         procedures

                   schema            custom
value quoting
                definition stmts   schema stmts

column type                       context index
                schema dump
  mapping                           creation

results type       structure
                                   AR patches
  mapping            dump

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Rails on Oracle 2011

  • 2. Raimonds Simanovskis github.com/rsim @rsim
  • 3. Self-promotion :) eazybi.com
  • 4. How to contribute to ActiveRecord Oracle enhanced adapter
  • 5. Main components Rails 3.x build query ActiveRecord Arel SQL Arel::Visitors::Oracle execute results OracleEnhancedAdapter ActiveRecord:: ConnectionAdapters:: AbstractAdapter
  • 6. What Oracle Enhanced adapter does database metadata custom CUD connection queries procedures schema custom value quoting definition stmts schema stmts column type context index schema dump mapping creation results type structure AR patches mapping dump
  • 7. Oracle Data Types Ruby Rails Oracle Fixnum :integer NUMBER Float :float NUMBER BigDecimal :decimal NUMBER, DECIMAL Time :datetime DATE Time :time DATE Date :date DATE String :string VARCHAR2 String :text CLOB String :binary BLOB True/FalseClass :boolean NUMBER(1), CHAR(1)
  • 8. Latest addition Ruby Rails Oracle String :raw RAW
  • 9. Legacy schemas class Employee < ActiveRecord::Base set_table_name "hr_employees" set_primary_key "employee_id" set_sequence_name "hr_employee_s" set_date_columns :hired_on, :birth_date_on set_datetime_columns :last_login_time set_boolean_columns :manager, :active ignore_table_columns :attribute1, :attribute2 end
  • 10. class Employee < ActiveRecord::Base set_create_method do plsql.employees_pkg.create_employee( :p_first_name => first_name, ActiveRecord :p_last_name => last_name, :p_employee_id => nil )[:p_employee_id] with end set_update_method do PL/SQL plsql.employees_pkg.update_employee( :p_employee_id => id, :p_first_name => first_name, CRUD ) :p_last_name => last_name procedures end set_delete_method do plsql.employees_pkg.delete_employee( :p_employee_id => id ) end end
  • 11. Full-text indexes add_context_index :posts, [:title, :body, # specify aliases always with AS keyword "SELECT comments.author AS comment_author, " + "comments.body AS comment_body " + "FROM comments WHERE comments.post_id = :id" ], :name => 'post_and_comments_index', :index_column => :all_text, :index_column_trigger_on => [:updated_at, :comments_count], :sync => 'ON COMMIT' Post.contains(:all_text, "hello") Post.contains(:all_text, "{first} within title") Post.contains(:all_text, "{first} AND {post}")
  • 12. Gemfile gem “ruby-oci8”, “~>2.0.4” gem “activerecord-oracle_enhanced-adapter”, “~>1.3.2” gem “activerecord-oracle_enhanced-adapter”, :git=> “git://github.com/rsim/oracle-enhanced.git”
  • 13. Currently testing on ActiveRecord versions 2.3.x 3.0.x 3.1.beta
  • 14. Currently testing on Oracle versions 10.2.0.4 11gR2 should be OK :)
  • 15. Currently testing on Ruby platforms oracle_enhanced adapter Ruby 1.8.7 Ruby 1.9.2 JRuby 1.6 ruby-oci8 2.0.4 ruby-oci8 2.0.4 ojdbc6.jar
  • 18. How? Provide full example require "rubygems" gem "activerecord", "3.0.5" gem "activerecord-oracle_enhanced-adapter", "1.3.2" require "active_record" ActiveRecord::Base.establish_connection(:adapter => "oracle_enhanced", :database => "orcl", :username => "hr", :password => "hr") ActiveRecord::Base.connection.instance_eval do drop_table :test_categories rescue nil create_table :test_categories, :force => true do |t| t.string :name t.string :category_code end end class TestCategory < ActiveRecord::Base end category = TestCategory.new(:name=>"hl", :category_code=>"hd") category.id = 1 category.save! p category
  • 21. ruby-plsql gem plsql.connect! "hr","hr","xe" plsql.test_uppercase('xxx') # => "XXX" plsql.test_uppercase(:p_string => 'xxx') # => "XXX" plsql.test_copy("abc", nil, nil) # => { :p_to => "abc", # :p_to_double => "abcabc" } plsql.test_copy(:p_from => "abc", :p_to => nil, :p_to_double => nil) # => { :p_to => "abc", # :p_to_double => "abcabc" } plsql.hr.test_uppercase('xxx') # => "XXX" plsql.test_package.test_uppercase('xxx') # => 'XXX' plsql.hr.test_package.test_uppercase('xxx') # => 'XXX' plsql.logoff
  • 22. ruby-plsql-spec ideal language for writing tests powerful testing tools RSpec with “readable” syntax library for calling ruby-plsql PL/SQL procedures from Ruby
  • 24. More information http://blog.rayapps.com http://github.com/rsim/oracle-enhanced http://groups.google.com/group/oracle-enhanced