将Java Content Repository（JSR170、JSR283）的"内容"存储机制带到Rails的世界里，与一统天下的ActiveRecord相比，会给我们的模型层带来哪些有趣的特性?

1. JCR + Rails = ?

2. © ThoughtWorks 2008 Who Am I WPC ThoughtWorker 10 years of programming life: C++ -> Prolog -> more C++ -> java, C++ -> Java -> Ruby -> Ruby + JS -> Ruby, JS, java Selenium Mingle (http://www.thoughtworks-studios.com)

3. What Is This Presentation About Introduction Java Content Repository A small framework help using it in JRuby Rails What it is interesting about Where to use it © ThoughtWorks 2008

4. © ThoughtWorks 2008 So, what the heck is Content Repository?

5. © ThoughtWorks 2008 A content repository is a hierarchical content store with support for structured and unstructured content

6. © ThoughtWorks 2008 From Rakesh Vidyadharan

7. © ThoughtWorks 2008 a lot of interesting features include: Full text search Versioning Transactions Repository level observation Query Language Security control Import/Export/Merge … And more

8. © ThoughtWorks 2008 Java Content Repository = JSR170 / JSR283 Open Source Implementation = Apache Jackrabbit

9. © ThoughtWorks 2008 Using JRuby to Access the Repository

10. © ThoughtWorks 2008 What it can bring to Rails?

11. © ThoughtWorks 2008 Flexible Schema Free Record

12. © ThoughtWorks 2008 Built-in full text search support (using Lucene)

13. © ThoughtWorks 2008 And powerful versioning function

14. © ThoughtWorks 2008 And robust hierarchy storage

15. © ThoughtWorks 2008 Xpath or SQL as Query language

16. © ThoughtWorks 2008 User defined Node Type

17. © ThoughtWorks 2008 More Concurrent Editing Built-in access control Repository Observation Export/Import as XML format Data store support

18. © ThoughtWorks 2008 Concerns: Performance Scalability Maintainability …

19. © ThoughtWorks 2008 Resources JSR 170 & JSR 283 Jackrabbit Modeling http://wiki.apache.org/jackrabbit/DavidsModel

20. © ThoughtWorks 2008 Related code is pushed to http://github.com/wpc/jcr-rails-demo PS: Don’t use it in production

21. © ThoughtWorks 2008 Hey, the spike is far not finished yet Drop me a mail if you are interested in pwang@thoughtworks.com/ alex.hal9000@gmail.com

22. © ThoughtWorks 2008 Q & A