Dan Ingalls
SAP Research
Technology Infrastructure Practice
Robert Krahn, Jens Lincke
Software Architecture Group
Hasso-Plattner-Institut Potsdam
06/15/2011
Live Web
SAP / HPI 2011
1
Taking Control (back)
■ The good old days
□ Every computer came with
OS, BASIC, files
□ Every user had control
■ The bad days of the web
□ A text markup language
HTML, CSS, PHP, ...
□ Little help for the rest of us
■ But take another look
□ Every browser comes with
Graphics, JavaScript, HTTP
□ JavaScript is the key
Live Web
SAP / HPI 2011
1
JavaScript A Dynamic Language
■ Shapes → live graphics
■ Graphics → live widgets
text
Live Web
SAP / HPI 2011
1
JavaScript A Dynamic Language
■ Widgets → live apps
■ Apps → live programming
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Hello World
Hello World
3 + 4
3 + 4
0.27
0.2
Hello World
World
Live Web
SAP / HPI 2011
1
The Live Web
■ Web 1.0
□ HTML = passive content
□ authored offline
■ Web 2.0
□ HTML + JS = active content
□ authored offline
■ Live Web
□ lively kernel (graphics + JS + HTTP)
□ live authoring
Live Web
SAP / HPI 2011
1
A Tool for Orchestration
■ The workbench
□ Architecture Workbench
■ Access to OData, SAPData
□ Metadata Viewing
■ OMeta compiler to JS
□ Embedded languages
■ Metacircular Scripting
□ Scipting from scratch
■ Rapid application development
□ Remote CPU monitoring
Live Web
SAP / HPI 2011
1
Summary
■ Simple, General Architecture
□ embrace disparate content
■ Pages
□ document content
□ persistence, sharing
■ Parts
□ vocabulary / library
□ persistence, sharing
■ Client Server Symmetry
□ enable simple processing in the cloud
■ Live Composition Environment (Mashups)
□ simple layout and simple scripting
■ Active content in the Web / Cloud
