1. Web Services + Jim Weaver, Learning Assistant Technologies
Ken Weiner, Interactive Business Solutions
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

2. Overview LAT/IBS co-development Introduction to web services
JAX-RPC and Apache Axis
uPortal channels exposed by web services
PLA client and uPortal channel client
Web Services for Remote Portals (WSRP)
Live Demos!
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

3. LAT/IBS Co-development
Learning Assistant Technologies (LAT)
Personal Learning Assistant (PLA)
Motivation: present uPortal channels to PLA users
Interactive Business Solutions (IBS)
Code contributed to open source
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

4. Personal Learning Assistant
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

5. Personal Learning Assistant
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

6. Personal Learning Assistant
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

7. Web Services
A Web service is a piece of software that can communicate with another application over a network by using a specific set of standard protocols
SOAP, WSDL, UDDI
Microsoft .NET and SunONE
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

8. SOAP – Simple Object Access Protocol
XML-based protocol for exchange of information in a decentralized, distributed environment
Envelope
defines what is in a message and how to process it
Encoding rules
expressing instances of application-defined data types
defines a convention for representing RPC requests and responses.
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

9. WSDL – Web Services Description Language
XML format for describing a Web service
Specifies the service's location and the operations exposed by the service
WSDL is to web services what IDL is to COM
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

10. UDDI – Universal Description, Discovery, and Integration
The “yellow pages” of web services
Facilitates service discovery
UDDI Business Registry
UDDI Operators: IBM and Microsoft
API for registering and finding businesses and services
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

11. Service-oriented architecture
Registry
UDDI
UDDI
Find
Publish
Service
Requestor
(client)
Service
Provider
(server)
WSDL
SOAP
Bind
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

12. JAX-RPC JavaTM APIs for XML-based Remote Procedure Call
For developing and accessing Web services
Defines mapping between WSDL and Java interfaces
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

13. Apache Axis Apache eXtensible Interaction System
An implementation of the SOAP submission to W3C and JAX-RPC
Follow-on to Apache SOAP project
Current version: beta 2
Tools
TCPMonitor
Java2WSDL
WSDL2Java
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

14. Axis on the Server Monday, June 10, 2002
Source:
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

15. Axis on the Client Monday, June 10, 2002
Source:
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

16. TCP Monitor Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

17. Remote Channel Web Service
PLA client
Channels
Web Service
SOAP
Channels
uPortal
WSDL
uPortal
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

18. Remote Channel Web Service
Authenticate
credentials
Instantiate channel
fname
instance identifier
Web
Service
Client
Render channel
Web Service
instance identifier, runtime data
channel markup
Receive event
instance identifier, portal event
Free channel
instance identifier
Logout
WSDL
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

19. Channel Functional Name (fname)
Uniquely identifies a published channel within an instance of uPortal
UP_CHANNEL
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

20. Remote Channel Service Java Classes
org.jasig.portal.webservices
IRemoteChannel
RemoteChannel
org.jasig.portal.webservices.ser
CookieSerializerFactory
CookieSerializer
CookieDeserializerFactory
CookieDeserializer
PortalEventSerializerFactory
PortalEventSerializer
PortalEventDeserializerFactory
PortalEventDeserializer
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

21. Web Service Deployment Descriptor
WEB-INF/server-config.wsdd
<service name="RemoteChannel" provider="java:RPC">
<requestFlow><handler type="SessionHandler"/></requestFlow>
<responseFlow><handler type="SessionHandler"/></responseFlow>
<parameter name="scope" value="session"/>
<parameter name="className“
value="org.jasig.portal.webservices.RemoteChannel"/>
<parameter name="methodName" value="*"/>
[type mappings for Cookie, Cookie[], and PortalEvent]
</service>
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

22. URL Rewriting org.jasig.portal.utils… AbsoluteURLFilter Add base URL
<img src=“picture.gif”/>
<img src=“
org.jasig.portal.utils…
AbsoluteURLFilter
XHTMLURLFilter
WMLURLFilter
Add base URL
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

23. Sessions org.apache.axis.handlers.SimpleSessionHandler
<SOAP-ENV:Envelope …>
<SOAP-ENV:Header>
<sessionID xsi:type="xsd:long“>12345</sessionID>
</SOAP-ENV:Header>
<SOAP-ENV:Body> .
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

24. PLA Client Subclass of javax.swing.JEditorPane Proxy servlet
Cascading style sheet (CSS)
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

25. PLA Web Services Client
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

26. Channel Web Services Client
New channel type: Remote Channel Proxy
Authentication
Passes user interactions and portal events
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

27. Remote Channel Proxy Java Classes
org.jasig.portal.channels.remotechannel
CRemoteChannel
Extends BaseChannel,
Implements IPrivileged, ICacheable
RemoteChannel
RemoteChannelSoapBindingStub
Extends Stub
Implements RemoteChannel
RemoteChannelService
RemoteChannelServiceLocator
Extends Service
Implements RemoteChannelService
Exception
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

28. Remote Channel Proxy Channel Type
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

29. Remote Channel Proxy Parameters
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

30. Remote Channel Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

31. Web Services for Remote Portals (WSRP)
WSRP will define:
A WSDL interface description for invocation of WSRP services
How to Publish, Find, Bind WSRP services and metadata
Markup Fragment Rules for markup emitted by WSRP services
Companies involved in WSRP:
Bea, Bowstreet, Divine, Epicentric, Factiva, France Telecom, Fujitsu, HP, IBM, Interwoven, Lexis-Nexis, Lotus, Moravia IT, Netegrity, Oracle, Peoplesoft, Plumtree, Silverstream, Stellent, SUN, Sybase, Tibco, WebCollage, SAP Portals, SeeBeyond
Source:
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

32. WSRP Goals
Enable interactive, user-facing web services to be easily plugged into standards-compliant portals
Let anybody create and publish their content and applications as user-facing web services
Let admins browse directories for WSRP services to plug into their portals without programming effort
Let portals publish portlets so that they can be consumed by other portals without programming
Make the Internet a marketplace of visual web services, ready to be integrated into portals
Source:
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

33. Abstract Portal  WSRP Interaction
User
WSRP Consumer
(Portal)
WSRP Producer
(Service)
Adds
Portlet
Create Portlet Instance I I
Views
Portlet
Allocate new Instance
Get Portlet Markup I I I S A
Generate Markup,
(opt: create Session) A S
Clicks
Action
Perform Portlet Action I I S A A I S A
Action Handling
(opt: create Session)
Removes
Portlet
Destroy Portlet Instance I I I
Destroy instance
Source:
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

34. WSRP Interface bindClient() createSession() createPortletInstance()
getPortletMarkup()
invokePortletAction()
destroyInstance()
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

35. Planned WSRP Milestones
May 2002: WSRP Scenarios / Use Cases
July 2002: First draft of WSRP Specification
August 2002: First version of Impl proving that spec works
October 2002: Final draft of WSRP Specification
November 2002: Update of Impl to reflect final draft
December 2002: WSRP Specification 1.0, Update of Impl. to reflect 1.0 spec, Compliance Test Kit
2003 Start next cycle for WSRP Specification
Source:
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

36. Live Demos LAT PLA client uPortal channel client Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

37. Useful URLs JAX-RPC Apache Axis WSRP java.sun.com/xml/jaxrpc/
xml.apache.org/axis
WSRP
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

38. PLA via uPortal Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

39. PLA via uPortal Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC

40. Speaker Evaluation Info:
The End
Speaker Evaluation Info:
Speakers: Jim Weaver and Ken Weiner
Presentation Title: Web Services and uPortal
Date: 6/10/2002
Time: 2:00 PM – 3:00 PM
Room: Grand Ballroom B
Monday, June 10, 2002
JA-SIG uPortal Conference, Vancouver, BC