WSCAF Demo

1
WS-CAF Demo

• A Demonstration of WS-CTX

2
Overview

• Demo loosely based on WS-I Sample Apps
• Consists of implementations of WS-CTX services
  and modified version of WS-I Sample App Retailer
  Service.
• Demonstrates interoperability between context
  implementations
• Each implementation has a web based UI that will
  be used as a driver for the demos.

3
WS-CTX Services Implemented

• ContextService
• begin(beginMsg)
• complete(completeMsg,contextHeader)
• UserContextService
• begun(begunMsg,contextHeader)
• completed(completedMsg,contextHeader)

4
WS-CTX Service Components not Implemented

• All Fault mechanisms
• ContextManager (no by-reference yet)
• Nested contexts
• Context timeout
• Statuses
• ServiceRefType (for addressing)

5
Store (Retailer) Components Excluded

• Inventory Control
• As proof of interoperability, inventory control
  will be a nice add for the demo.
• Dynamic store identification
• The WS-I SA implementation used UDDI

6
Demo Flow

• User selects a catalog of items from any store
  implementation.
• User selects items from catalog and adds them to
  his cart.
• Store implementation begins new activity if
  there is no current shopping cart held by the
  user (no context in header).
• User can choose to add more items from the same
  or a different catalog. Store implementations
  will add these items to the existing cart.
• User decides to finalize sale, by selecting a
  store (not necessarily one he has added items
  from), and submitting his order.
• Store implementation completes activity by
  calling complete on the ContextService referenced
  by the Context (using the context-service
  element).

7
Flow Example
CTX SVC. 1
Store 1
3 begin
1 getCatalog
User
2 addItemToCart
5 complete
Store 2
CTX SVC. 2
4 submitOrder
8
Caveats

• Addressing is not handled according to spec.
• The demo relies on the context-service element in
  the WS-CTX structure. This element is not
  dereferencable however according to the spec.
• No fault mechanisms can cause unexpected
  behavior.