2000-05-06 Mobile Commerce and WAP

Mobile Commerce and WAP
Marcus O’Connell
Agenda
• I-Hometown and Jeestore

• Jeestore Architecture
• Generation of Dynamic WML
• Java Internationalisation
• Generating multi-lingual content
• Support for user sessions
• WAP 1.2
Overview of Jeestore
Business-to-Consumer
e-commerce software
• Online shop building application

• No software required
• No programming or html skills
7 steps to building a store
• Store owner registration

• Logo upload/generation
• Welcome message
• Store details
• Product groups
• Adding products
• Publish store
Jeestore Architecture
Oracle
Postgres
Linux / Unix / NT
Presentation Layer
• ‘Web-MVC Architecture’
• Java Servlet based controller
• Dynamic content produced through Java

Server Pages (JSP)
Presentation Layer
HTTP Request HTTP Response
Servlet
Instantiates JSP
Business Logic
Jeestore on WAP
• Supports Wireless Application Protocol
• Generates dynamic Wireless Markup

Language (WML) pages
• Shops built for PC and mobile device

simultaneously
• Consumers can purchase goods with a

mobile phone
Using JSPs to Generate WML
<?xml version=1.0?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN"
"http://www.wapforum.org/DTD/wml_1.1.xml">
<wml>
<card id=“home” title=“Jeestore Home”>
<p>
<%
// Display a list of store departments
Enumeration products =
dataBean.getAbstractProductGroup().getElements();
while (productObjects.hasMoreElements()) {
Product obj = products.nextElement();
out.println("<a href=\"" + Dept?id=" + obj.getId() + "\">");
out.println(obj.getName() + "</a><br/>");
}
%>
</p>
</card>
</wml>
Internationalisation
Jeestore has the ability to send content in
the appropriate format and language
depending on the browser locale
Provide the right

• Language
• Character set
• ‘Look & Feel’
Single server
Internationalisation of server code
Session Support
• Session support between HTTP requests

required
– Allow users how have logged in to access
certain areas
– Maintenance of shopping cart
– Reporting and tracking of users’ activities
• Two main ways to maintain sessions

– Cookies
– URL-rewriting
– Hidden fields in POST methods
Transformation Gateway
• Determines the appropriate format of

the content
– markup language
– content language
– session support
• Queries HTTP request headers to

determine browser type and
supported languages
• Uses a lookup table to determine
markup language and session support.
• Based on this, determines which JSP to

instantiate
– Based on the HTTP request, the servlet does not
determine the actual jsp to instantiate, but the jsp
type. The transformation gateway determines the
actual jsp filename.
• Sets the appropriate content-type,

language and character set of the HTTP
response.
HTTP Response
HTTP Request
Instantiates JSP
Jsp filename
Servlet
Jsp type
Trans. Gateway
Browser parameters
Business Logic
• Need a standard naming convention for

jsp’s to handle multiple editions.
– Parameters such as markup, session support,
and language need to be encoded in filename.
• Issues
– Multiple sets of jsp’s need maintenance
– Use of resource bundles
WAP 1.2
• Wireless Identity Module
– Tamper resistent device

– Perform cryptographic operations for
WTLS
– Store sensitive information
– Can also be utilised in non-WAP
applications
• S/MIME, TLS, SSL
WAP 1.2
• Crypto API
– Library interface for WMLScript

– provides cryptographic functionality to
client
– proof of transaction authorization
• digital signature functionality
– complements transport layer security
WAP 1.2
• User Agent Profile Specification
– heterogeneity of display capabilities
– different user preferences

– interoperates with W3C standard
• Composite Capabilities/Preferences profile
(CC/PP)
• Capability and Preference Information (CPI)
– Origin servers, gateways and proxies use

CPI
WAP 1.2
• Push Framework
– transmit information to device without a

previous user action
– Push Initiator
– Push Proxy Gateway (PPG)

Thank you
marcus@ipo2.com

2000-05-06 Mobile Commerce and WAP

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Mobile Commerce and WAP

• I-Hometown and Jeestore

• Online shop building application

• Store owner registration

• Java Servlet based controller

• Dynamic content produced through Java

• Supports Wireless Application Protocol

• Generates dynamic Wireless Markup

• Shops built for PC and mobile device

• Consumers can purchase goods with a

Provide the right

• Session support between HTTP requests

• Two main ways to maintain sessions

• Determines the appropriate format of

• Queries HTTP request headers to

• Based on this, determines which JSP to

• Sets the appropriate content-type,

• Need a standard naming convention for

– Tamper resistent device

– Library interface for WMLScript

– different user preferences

– Origin servers, gateways and proxies use

– transmit information to device without a

– Push Proxy Gateway (PPG)

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