Portals, uportal and JA-SIG. Jim Farmer China Education and Research Conference 2002 Beijing, China March 28, 2002

Transcription

1 Portals, uportal and JA-SIG Jim Farmer China Education and Research Conference 2002 Beijing, China March 28, 2002

2 Portals

3 A student s Web World Research Administrative Library Instruction

4 Portal defined Portal - an entry point or starting site for the World-Wide Web, combining a mixture of content and services and attempting to provide a personalized "home base" for its audience with features like customizable pages and personal homepage construction kits. Auburn University March 24, 2002

5 With channels (portlets) Channel B Channel A Channel C Channel D uportal Framework uportal database

6 Students expectations shaped by... Their use of the Internet Their use of government and business portals Their life in a real-time, information rich environment

7 Why are portals important Make knowledge workers more productive Meet user preferences A viable architecture for information services Improved services Lower costs

8 A student portal

9 Types of portals Enterprise [integration] Knowledge/document management Collaboration and messaging Front end to application servers Jim Rapoza, Enterprise value of portals is clear, eweek, September 13, 2001

10 Required capabilities Type of Portal JSP Chat & Mail Content Classification and Search Web Services Enterprise??? Collaboration??? Knowledge management??? Front end???? uportal

11 Typical services Directory Authentication Roles Groups Wallet Authorization and chat Web Services XML, SOAP, UDDI Workflow Calendaring Announcements Type of Portal Enterprise X????? Collaboration??? X? X X?? Knowledge management? X? X?? Front end???????????

12 uportal

13 What is uportal? Enterprise, horizontal portal Framework for presenting aggregated content (channels or portlets) Personalization Role-based access control Open source, collaborative effort Java web application

14 Where does uportal fit? People Browsing Devices uportal with Channels Data Applications

15 uportal interfaces Authentication Proving your identity Authorization Deciding what you can access Directory services Such as populating EduPerson User preferences Profiles, structure, themes, skins Channel information Availability and configuration

16 What is a channel? Displays content XML feeds Rich Site Summary (RSS) Web services Legacy systems Interactive applications Bookmarks , chat, list serves

17 The Meteor channel

18 Flexible layouts Structures Tab/ column Tree / column Themes Multi-column Multi-row Skins Matrix, Java

19 User preferences

20 Tab / Column layout

21 Tree / Column layout

22 Content transformation XML XSLT Processor XHTML: Web Browser HTML: PDA Stylesheet WML: Cell Phone

23 Multiple target devices

24 Theme: uosm

25 Theme: java

26 Theme: imm

27 Theme: matrix

28 What is new in 2.0? Abstraction of layout Structure/theme transformations Standard channel events Standard CSS classes More flexible publish/subscribe User profile management JNDI lookup service WebProxy channel

29 What is planned for 2.1? Aggregated layouts Publishing/channel administration Frame support Browser differentiation Tree/column structure and themes Web services extension WML theme Internationalization

30 What is planned for 2.2? Integrated content management Workflow services Composite group services Channel development kit User administration tools Synchronization of multiple Java Virtual Machines

31 Channel developments Composite directory Calendaring (Washington) Library system integration via Web services (Hull) Single signon using WebISO (Hawaii) Digital certificate support (CREN) WSRP Support

32 JA-SIG Java In Administration Special Interest Group Conferences biannually Clearing house Collaborative projects

33 The End Jim Farmer Project Administrator JA-SIG Collaborative

34 uportal Framework Architecture

35 Basic architecture uportal Framework uportal database

36 Basic architecture Permissions authentication User preferences Channel registry Other uportal Data iplanet LDAP Oracle db2 mysql

37 With channels Channel B Channel A Channel C Channel D uportal Framework uportal database

38 Interface services Provider - an application that provides service to an interface, and may use the uportal database Connector - a program that provides service from a standalone application to an interface. May also be called an adaptor

39 Interface options Provider Connector External Application

40 Architectural features Extensive user customization Inter-channel communications Channel services Normalized database schema Profiles (multiple device management) Layout-specific preferences channels JNDI backbone

41 Channel services Services provide common functionality to the channels Logging facility Password wallet File sharing, printing, mail, calendar Channel synchronization JNDI access

42 Inter-channel communication Channel discovery How to find a channel? Need channel instance ID. Functional names Direct interaction Channel access objects Channel-bound public JNDI subtrees

43 Basic Architecture

44 Connectors may communicate By calls to the application By custom protocols over, say, sockets By standards protocols such as LDAP By business messages using Web services - XML, SOAP, UDDI

45 uportal interfaces Permissions - permission management Security Context - authentication, single signon User preferences - layout, style sheet choices Channel registry - channel specific persistent store

46 IChannel content must Be well-formed XML such as XHTML, RSS, SVG, SMIL, or SOAP message (but not HTML) Rendered by an XSL transformation using an XSL stylesheet

47 A channel may be extended To support an application using custom code Or a different form of content rendered using custom code Through the IChannel interface

48 Web services Architecture

49 A Web service is XML business messages using ebxml/soap compliant data transport rendered using XSL transformations for a remotely authenticated user

50 Web services architecture is XML tagged data content extensible Markup Language ebxml/soap data transport Simple Object Access Protocol XSL transformations for presentation extensible stylesheet language and now UDDI/WSDL directory services Universal Description, Discovery, and Integration, and Web Services Description Language

51 Is Web technology important? Feb The University of Illinois releases the Mosaic browser Oct The word e-commerce enters the vocabulary Feb ED/SFA announces UML, XML, Java standards Sep IBM announces Web services, a new architecture

52 Value of Web Services technology Open standards Web service projects are taking one-fourth the time and costing onefifth comparable projects using traditional technology. Performance is 2 to 10 times better than expected. HFC Bank - IFX credit card application using XML, SOAP and XSLT Deutsche Bank Bauspar - FixML security transaction integration using XML messages and XSL transformations Hypo Vereinsbank - Integration Based on presentations at the XSLT [Invitational] Conference Oxford, University, April 8-9, 2001

53 Standards-based Development

54 Standards-based channels Design using current Web standards Internet Engineering Task Force W3C World Wide Web Consortium IMS Global Learning, Inc. ADL (Advanced Distributed Learning) Labs Extend current applications to meet academic needs Hierarchical permissions Secure anonymous authentication Integrate with uportal

55 Requested standards-based channels Authentication/Authorization SAML (Security Assertion Markup Language) Secure Logging Syslog (IETF Syslog) Log4j (Apache Foundation log4j)

56 Requested standards-based channels Directory eduperson (Educause person object) IMS (IMS Enterprise Specification) DSML (Directory Service Markup Language) LDAP (Lightweight Directory Access Protocol) Workflow WfML (Work Flow Markup Language) WSFL (Web Services Flow Language)

57 Requested standards-based channels Internet chat IMPP (IETF Internet Messaging and Presence Protocol) Jabber (Jabber Foundation Jabber Protocol) Distributed authoring WebDAV (IETF Web Distributed Authoring and Versioning) Extending a current uportal channel authored by the University of British Columbia: POP3 (IETF Post Office Protocol) IMAP4 (Internet Mail Access Protocol) SMTP (Simple Mail Transport Protocol)

58 Requested standards-based channels Electronic books Open ebook Electronic publications DocBook Customer Relationship Management Customer Profile Exchange In conjunction with the Open Knowledge Initiative: instruction delivery IMS (Instructional Management Systems) SCORM (ADL s Shareable Content Object Reference Model) testing IMS, SCORM