1. Data Interchange Formats at Work
XML and JSON
Tom Marrs
Architect

2. Your Profile
Is XML dead?
XML and JSON – together?
What?
Why?
Not?
How?

3. What’s The Point?
XML for Integration JSON for speed

4. Data Interchange Context

5. Today’s Agenda
Older
Formats
XML JSON
Wrap
Up

6. We’re Not Covering
SOA
REST vs SOAP
Web 2.0
XML Schema Design

7. Older Formats
Delimited
Positional

8. Delimited Data
John|Smith|2008-12-06|To improve my
public speaking skills. To get
promoted. To take over the world
(or a small portion thereof).|555
Main
St.|Bailey|CO|80909|USA|john.smith
@acme.com|303-555-1212|720-555-
1212|970-555-1212|677476|Simply
Speaking|Aurora|26

9. Positional Data
John Smith
2008-12-06…
First Name: 0 - 20
Last Name: 21 – 50
Date Joined: 51 - 60
…

10. Older Formats Are Dead – Right?
NO!
EDI/X12 ANSI

11. Older Formats
No meta-data
Proprietary parsing/formatting
Programmatic validation

12. XML Overview
W3C Standard - 1996
Publishing  Messaging
XML-based Languages

13. XML
•Valid - XSDSemantics
•Well-FormedStructure

14. ToastML – Iteration 1

15. ToastML – Iteration 2

16. ToastML – Iteration 2 - Schema

17. ToastML – Iteration 2 - Schema

18. ToastML – Iteration 3

19. ToastML – Iteration 3 - Schema

20. XML Elements vs. Attributes
It’s an Element When …
First Class Data – <Member>
Hierarchical / Whole-To-Part
Order Matters
Multiple Values
Long Data / Whitespace -
<Reason>
It’s an Attribute When …
Dependent Data / Meta-Data
No further structuring
firstName
lastName

21. ToastML – Iteration 4

22. ToastML – Iteration 4 - Schema

23. XML Patterns
http://www.xmlpatterns.com
Domain Element
Extensible Content Model
Russian Doll / Venetian Blind / Salami Slice
Canonical Schema – SOA Design Patterns

24. XML Surround Sound
XPath
XSLT

25. My Journey in Java XML Binding
SAX DOM Castor JAXB
XML
Beans

26. JAXB Annotations

27. JAXB Marshalling/Unmarshalling

28. My JAXBUtil

29. XML Beans
Marshalling/Unmarshalling

30. Apache CXF

31. XML in Ruby - REXML

32. XML in Ruby on Rails

33. XML in JavaScript (jQuery)

34. !XML
Web 2.0 / AJAX
Slick User Experience

35. XML Wrap Up
Semantics / Meaning
Interoperability

36. JSON Overview
JavaScript
www.json.org
2006 - IETF - RFC 4627
The “x” in AJAX
Lightweight / simple
structures

37. JSON
•Valid – Not YetSemantics
•Well-FormedStructure

38. JSON Structures
Object Array
List of ValuesName / Value Pairs

39. Toast.JSON – Iteration 1

40. Recall - ToastML – Iteration 1

41. Toast.JSON – Iteration 4

42. Recall - ToastML – Iteration 4

43. Toast.JSON – Iteration 4 – Multiple
Members

44. JSON Schema?
http://json-schema.org
March 2010 – IETF – RFC ?
Not Quite Ready

45. JSON in Java - SOJO

46. JSON in Java - GSON

47. JSON in Java – Apache CXF

48. JSON in Ruby on Rails

49. JSON in JavaScript (jQuery)

50. Cross-Domain JSON - The Problem
Same-origin policy
AJAX XmlHttpRequest
Browser Security Constraint

51. JSONP (JSON with Padding)
and jQuery – The Solution

52. !JSON
Enterprise-class Integration
Waiting for JSON Schema

53. JSON Wrap Up
Concise
Fast

54. What’s The Point?
XML for Integration JSON for speed

55. Questions?
Tom Marrs
Architect
thomasamarrs@comcast.net
www.slideshare.net/tmarrs