Aggregation of WSRP Channels on Eclipse Rich Client Platform

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Francis Dixon
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1 Aggregation of WSRP Channels on Eclipse Rich Client Platform Shoji Kajita Associate Professor, Ph.D Information Technology Center Nagoya University Japan

2 Agenda Background ULAN: Ubiquitous Learning Architecture for the Next-generation To Realize More User Context-aware Institutional Information Services Review of Current Paradigm For Diverse Institutional Information Services Review of Rich Client Solutions Current Technologies Eclipse RCP WSRP Sakai WSRP Producer Eclipse WSRP Implementation Closing Thoughts To Envision Our Future

3 Notes and Apologies In proposing, I wrote. In this presentation, we review WSRP, Eclipse RCP and its plug-in development, and then demonstrate the integration of Sakai WSRP producers and Eclipse RCP to discuss the challenges and obstacles of client-side aggregation. Our native tongue is not English Be patient :-)

4 Background To Realize More User Context-aware Institutional Information Services

Nagoya University One of the key national universities in Japan About

staff About 16,000 under-graduate & graduate students Osaka Kyoto Nagoya

three major cities started a research project to seek a nextgeneration

5 Nagoya University One of the key national universities in Japan About 3,500 faculty & admin. staff About 16,000 under-graduate & graduate students Osaka Kyoto Nagoya 350km Tokyo Last year, the ITCs of key national universities in these three major cities started a research project to seek a nextgeneration Course Management System for Japanese H.E. institutions, under the support of Ministry of Education, Culture, Sports, Science and Technologies

6 ULAN Project Objectives Develop a user s context-aware CMS under ubiquitous computing environment Release and maintain a production-level open source CMS that can be used in Japanese higher educational institutions Project Leader: Professor Kenji Mase Five Years Research Project Main Groups Nagoya University, Kyoto University, Osaka University, CSK Corporation

7 Research Group Organization Project Management Team Leader: Kenji Mase Nagoya Univ.) Application Oriented Team 1 Research of User s Context-aware UI Haruo Takemura (Osaka Universiy) Infrastructure Oriented Team 2 Research of User s Context-aware NG CMS Enterprise Software Shoji Kajita ( Nagoya University) Collaborative Evaluation Experiments with Three Universities 3 Evaluation in Language Education Michihiko Minoh (Kyoto University)

8 User Environment Is Becoming Diverse in Terms of Place and Device Computer Lab PDA Regular Class Room Café Restaurant On Campus Office Home User Context Awareness is going to be a key technology in near future (5-10Y) Cellar Phone Kiosk Library Public Big Screen

9 User Context-aware Next Generation CMS Architecture Camera, Microphones, and Other Sensors.. Client-side Context Capture Client-side Presentation Client Tier Integration of User Context Integration of Abstracted Presentation Portal Tier Context A Analysis Context B Analysis Common Context Analysis Service A Service B Common Services Application Tier User Context-aware Resources Database Tire

10 User s contextaware, PC-based CMS Client Software Components Rich CMS Client Client Tier User s contextaware functions Portal Framework (uportal) Portal Tier Original Work Open Source Proprietary Sakai CLE WebCT Vista A Domestic LMS Application Tier User s contextaware features User s contextaware contents Fedora Database Tire

11 Questions Arise For our research project, it was necessary for us to enrich the capability of clientside (esp. Web browser) in order to acquire user context information Is it enough for institution as production system? We could attain better user s experiences by Rich Client more and more. That is why we started the aggregation of WSRP channels on Rich Client

12 Review of Current Paradigm For Diverse Institutional Information Services

13 Institutional Information Services Have Been Becoming Diverse CMS LMS Calendar Announcement Helpdesk Instant Message Institutional Web Site Mail Portfolio Library Academic Social Network Content Mgmt Department Web Site SIS Anti Virus Human Resource Finance File Institutional Repository Backup

14 Simplified Scenario Institution wants to provide academic information services Constituent (Student, Faculty, Staff, ) wants to consume academic information services Constituent Institution Web Browser Web-base App Server

15 Current Web based Scenario Web Browser User Mgmt Group Mgmt Web-based App Server Authentication Authorization Request HTML User Layout Rendering Aggregation Pushed by institution Pulled by user All of key concepts except for rendering are located in server-side

Layout Aggregation Pushed by institution Pulled by user

16 Rich Client based Scenario Rich Client User Mgmt Group Mgmt Web-based App Server Authentication Authorization Rendering User Layout Aggregation Pushed by institution Pulled by user Aggregation of services, generating user layout and rendering are done in client-side

17 Pros and Cons of Rich Client based Scenario Pros User context-aware Rich representation Load balancing for simulation contents Institutionally secured sandbox on desktop Gateway to mobile devices Cons Distribution and maintenance costs Platform dependence

18 Possible Rich Client Solutions

19 Possible Rich Client Solutions Through my narrow view Web Browser based Solution Browser independent Ajax based Flash based Macromedia Flex OpenLaszlo Browser dependent XUL Application = XUL + JavaScript + XPCOM XUL: XML based User Layout XPCOM: Cross Platform Component Object Model Non Web Browser based Solution Eclipse Rich Client Platform

20 Rich Client Solutions Characteristics Cross Platform Logic Processing Presentation Richness Maintenance (install) Ajax Server-side (HTML) Flex Server-side (Java) (Flash) OpenLaszlo Server-side (Java) (Flash) XUL Client-side (JavaScript) (XUL) Eclipse RCP Client-side (Java)? (SWT) Cross Platform: Availability on Windows, Linux, Mac OS

21 Eclipse RCP Not just a Java IDE Eclipse IDE is also built on the top of Eclipse RCP It is easy to develop RCP-based applications from Eclipse 3.1 Tab Browser demo Steps to launch Sample RCP application

22 Creating A Sample RCP Application: Step 1

23 Creating A Sample RCP Application: Step 2

24 Creating A Sample RCP Application: Step 3

25 Creating A Sample RCP Application: Step 4

26 Creating A Sample RCP Application: Step 5

27 Creating A Sample RCP Application: Step 6

28 Sample RCP applications are good starting points to implement our own functionalities A framework to enable us to develop RCP based institutional application is required API to institutional services Channel Development

29 WSRP

30 WSRP Web Services for Remote Portlet OASIS Standard WSRP 1.0 (approved in August 2003) WSRP 2.0 (Mid 2005?) WSRP defines WSDL interface description for invocation of WSRP services How to publish, find, bind WSRP services Markup fragment rules for markup emitted by WSRP services

31 Objectives of WSRP To develop a web services standard that will allow for the plug-n-play of Portlets To enable an application administrator to pick from a rich choice of compliant remote content and application providers, and integrate them with just a few mouse clicks and no programming effort (From WSRP in uportal" by Ken Weiner, JA-SIG 2003 Winter)

32 Typical Web Service vs. WSRP Application X Business Logic Application X Business Logic WSRP Producer Message in XML Presentation in HTML Business Logic Rendering Logic WSRP Consumer Application Y Application Y Typical Web Service WSRP

33 WSRP and uportal uportal 2.4 enabled us to consume WSRP producer as WSRP channel using Apache WSRP4J Jan 2004 Jan 2005 Jan 2006 From some point after 2.4.2, WSRP channel is not working correctly (probably due to the use of old Axis in WSRP4J)

34 Sakai 2.1 WSRP Producer Sakai 2.1 includes a WSRP producer interface for most of its tools allows individual tools to be placed in a WSRP consumer portal simply by pointing to a Sakai deployment Sakai tools as WSRP producer can be rendered either in a separate configurable context or in any given Sakai site context Sakai WSRP Producer by Vishal Goenka SunGard SCT -ce75-46f8-00c3- f4813d02afef/sakai%20wsrp%20producer/sakai%20wsr P%20Producer.pdf The integration with uportal is well-described in Andrew Petro (Yale) presentation of this conference

35 Sakai WSRP Integration Using Eclipse RCP Constituent Institution Browser Widget HTML WSRP4J SWT driver Sakai Tools WSRP Producer

36 We Need To Develop WSRP4J SWT Consumer Layout Manager Channels pushed by institution Channels pulled by user SSO for WSRP CAS could be used Some local RCP based tools To enrich user s experiences

37 Closing Thoughts

In 1995 Cellar Phone Digital Camera Internet Service Provider Windows95 Java WebCT (the leading Course Mgmt System) Murray Goldberg of UBC got an idea to facilitate

38 In 1995 Cellar Phone Digital Camera Internet Service Provider Windows95 Java WebCT (the leading Course Mgmt System) Murray Goldberg of UBC got an idea to facilitate multiple online course creation by typical sets of Course Tools (November 23rd, 1995) We have already had the beginning of something that will get popularity in 10 years

39 In 2015 What will get popularity in institution? uportal? CAS? Blackboard (including merged WebCT)? Sakai? Moodle? EPIC minutes Flash movie Evolving Personal Information Construct ugrid: Evolving Academic Personal Information Services

40 Questions and Comments

Portal Technology. State University of New York Albany, New York 26 October Jim Farmer. i n s t r u c t i o n a l m e d i a + m a g i c, i n c.

Portal Technology. State University of New York Albany, New York 26 October Jim Farmer. i n s t r u c t i o n a l m e d i a + m a g i c, i n c. i n s t r u c t i o n a l m e d i a + m a g i c, i n c. Portal Technology State University of New York Albany, New York 26 October 2005 Jim Farmer instructional media + magic, inc. Overview Use of portals