olivier liechti java architect sun microsystems p7: a pilot portal project for the k12 community in...
TRANSCRIPT
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Olivier LiechtiJava architectSun Microsystems
P7: A pilot portal project for theK12 Community in Geneva, Switzerland
PEPC 2003
Pan European Portal Conference 2003
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Agenda● Presentation of a K12 portal project
– Pilot for the State of Geneva, Switzerland– Delivered by Sun Professional Services
● Approach & methodology● Architecture
– Sun ONE platform & open source packages– 4 different modules delivered incrementally
● Demonstration (off-line)● Lessons learned● Questions & answers
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Objectives● Share the experience gained
during the project● Explain how the portal is used
by the K12 community● Describe the pilot architecture● Review a number of Open
Source packages that fit nicely in any collaborative portal
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Project Overview (1)● Partnership between:
– State of Geneva, Switzerland– Sun Microsystems
● Project owner– CTO for the State of Geneva (CTI)– Strong focus on e-Government– Want to establish a transversal portal
across departments (education, health, finance, ...)
● Project sponsor– Director of the Pedagogical Center for ICT
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Project Overview (2)● The role of Sun Microsystems
– Take project leadership and deliver a complete solution.
– Take an active role in the capture of requirements and coaching of project team.
– Provide technical expertise.– Provide a platform for building a K12 portal.
● The approach– Iterative and incremental development– Early and frequent release of the system– Early involvement of portal users,
workshops and feedback gathering
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Project Objectives● Pilot project● Explore the application domain
– Define high-level functional requirements– Implement them and provide a "sandbox"
to pilot users (teachers)– Iterative & incremental development,
participatory design, lots of workshops!● Evaluate the Sun ONE platform
– Design and implement a Sun ONE stack with the Sun ONE products.
● Integrate third-party packages
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Project Timeframe● July 02 – November 02
– Analysis, design, implementation & evaluation
– Iterative process, evaluation started in August already
● December 02– End of the first evaluation period,
validation of the results.● January 03
– Extension of the pilot evaluation, with an increase in the number of participants
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Approach & Methodology (1)● Iterative & incremental
development– Deliver system releases early and regularly– 4 modules delivered sequentially
● Involvement and coaching of users– Series of workshops, after each release– Super-users (teachers) had to come up
with usage scenarii for the generic tools● Initial requirement capture
– brainstorming workshops, high-level requirements definition
– Selection and definition of priorities
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Approach & Methodology (2)● For every functional module
– Search for, evaluate and select a software package (Open Source if available)
– Integrate the user management of the package with the user management of the portal
– Develop a portal channel to present information on the desktop page
● Involve the customer team, so they can repeat the process in the future
● Show that S1PS can integrate heterogeneous technologies
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Functional Requirements● Basic portal features
– personalization, aggregation, messaging, calendar, search
● Support identity management in a decentralized way
● Support role-based access to services
● Strong focus on collaborative tools– Collaborative Web spaces– Content Management System– Mailing lists and newsgroups
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“Don't learn to use ICT. Use ICT to learn!”Raymond Morel, Director of CPTIC, Geneva
Project Sponsor
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Non-Functional Requirements● Ease of use
– for the end-users– for the system administrator
● Localization● Stability & performance● Prepare for scalability and high-
availability, but do not address it explicitly during the pilot.
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Subsystems● Core Portal
module– infrastructure– portal– messaging– calendar– search engine
● Collaborative Web module
● CMS module● Mailing lists
module● Newsgroups
module
Sun ONE stack Open Source packages
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Core Portal Module (1)● Requirements
– Personalization– Aggregation– Identity
management– Communication– Search
● Hardware– 3 servers– 1 development
server
● Sun ONE Products– Portal Server 3.0– Directory Server– Messaging Server– Calendar Server– Sun ONE Web
Server– Compass– Personalized
Knowledge Pack
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Collaborative Web Module (1)● Requirements
– Create a collaborative space, where people can browse and easily edit Web pages.
– The target is the workgroup (e.g. a class, biology teachers, a project team)
– Favor a lightweight approach, that does not require special tools on the client side.
● Application examples– Group assignments and collaboration– Never-ending story– Project management for interest groups
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Collaborative Web Module (2)“TWiki is a leading-edge, web-
based collaboration platform targeting the corporate intranet world. TWiki fosters information flow within an organization; lets distributed teams work together seamlessly and productively; and eliminates the one-webmaster syndrome of outdated intranet content.”
http://twiki.org, mission statement
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Collaborative Web Module (3)● Selected
software– http://twiki.org– perl
● Features– Any browser– Link management– Attachments– Revision control– Access control– Variables & plugins– Skins
● Pros– very lightweight– editing the content
is very fast● Cons
– don't expect "beautiful" documents
– need to learn the TWiki syntax
– not designed for scalability
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Collaborative Web Module (4)
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Collaborative Web Module (5)● Portal channel
– Quick solution: the URLScaper provider, but...– only works for non-protected URLs– Screen real-estate is an issue
● Identity management– TWiki provides its own user management– Users and groups are defined in TWiki topics– Every TWiki user has an associated TWikiUser
topic, with its data and preferences.– In this topic, the TWikiUser id is mapped with
the Web server user id
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Browser Web server TWiki script
GET /twiki/bin/view
401 UnauthorizedWWW-Authenticate: Basic realm="twiki"
TWiki
UserTopic
GET /twiki/bin/viewAuthorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==
invoke
REMOTE_USER=john
lookup mapping
between web server user
and TWiki user
LDAP Server
auth
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CMS Module (1)● Requirements
– Provide a mechanism to create and publish on-line documents, in a controlled manner.
– Support a basic validation workflow, where editors validate the content submitted by authors (then accessed by readers).
● Application examples– School newspaper– Assignments submitted on-line– One-to-many communication channel
between teacher and parents
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CMS vs. Collaborative Web
AuthorsLecteurs
CMS (spip)
Éditeurs
explicit control and validation
Editors
Readers
induced control mechanisms
Collaborative
Web (twiki)Community of peers
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CMS Module (3)
SPIP is a simple, yet powerful CMS system
http://spip.org
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CMS Module (4)● Selected
software– http://spip.org– PHP, mysql
● Features– administrative
interface– LDAP interface– validation
workflow– forums– syndication
● Features (cont.)– keywords– search engine
● Pros– new instance can
be deployed very easily (by end-user)
– user friendly– very simple, yet
feature rich– elegant
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CMS Module (5)● The dynamic sites consist of
categories, organized in a hierarchy● Articles and briefs are published in
these categories● Authors use the admin interface to
create and submit documents● Editors use this interface to define
categories and validate documents● Webmaster use tags to create
templates for the site
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CMS Module (7)● Identity management
– First versions of SPIP stored users, passwords and roles in the mysql database
– SPIP 1.5 now offers an LDAP interface for authentication, and a basic mechanism for role assignment on initial login
● Portal channel– Display article headers in the channel– In the "edit" mode of the channel, users
can select from which SPIP categories
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CMS Module (9)
Portal
Provider
SPIP
Abstraction
Layer in JavaSPIP
Database
SPIP
PHP
Web
Browser JDBC
JDBC
Client Presentation Business Integration Resource
Templates Core
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Mailing Lists Module (1)● Requirements
– Support the creation and management of mailing lists
– Enable the definition of policies for these lists (access rights to archives, posting rights, etc.)
– Provide a web-based interface (localized) ● Application examples
– Teacher to students communication channel in a classroom
– Exchange of information between all teachers of the same branch
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Mailing Lists Module (2)
http://sympa.org
Sympa is a very flexible mailing list manager
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Mailing Lists Module (3)● Selected
software– http://sympa.org– perl, mysql
● Features– Multilingual– Customizable web
interface– Policies– Dynamic
membership– Document
repository
● Pros– very flexible– LDAP interface
for authentication and dynamic membership
● Cons– Need to run as
FASTCGI for good performance
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Mailing List Module (4)
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Mailing List Module (5)● Integration with Sun ONE Messaging
– One account for every mailing list– Pipe the messages to the Sympa daemon– Manage accounts through the web interface
● Identity management– Sympa offers an LDAP interface for
authentication and dynamic membership● Portal channel
– Display message headers in the channel.– Future work: display statistics, e.g. most
active list, number of messages, etc.
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Mailing Lists Module (8)
Portal
Provider
Sympa
Abstraction
Layer in JavaSympa
Database
Sympa
perl
Web
Browser JDBC
JDBC
Client Presentation Business Integration Resource
Templates Core
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Summary● Use TWiki if you want to
create collaborative spaces for workgroups
● Use SPIP if you need a publication workflow and good looking documents
● Use Sympa if you want to use mailing lists and newsgroups
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Lessons Learned & Conclusions● Engaging users early and often in
the design process is very important● There is a strong demand for
collaborative tools in the K12 community
● The tools used for the project are not specific to the K12 domain – they can be used in other application domains
● Working with teachers is a lot of fun!
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Q&A