Presentation 11: SOAP on small devices

Ingeniørhøjskolen i Århus Slide 2 af 11 Outline Which small devices? What are the limitations and what kind of support do they offer for SOAP SDK’s available

Ingeniørhøjskolen i Århus Slide 3 af 11 Which small devices? Embedded computers –Windows CE –Java KVM’s –Others (native) PDA’s –Pocket PC’s Windows CE, eC++, eVB.NET Compact Framework & Pocket PC API –Palm Running J2ME/J2SE or native Palm (C++) Mobile phones –J2ME CLCD MIDP –Native (Symbian C++, Personal Java) –Smartphone API (Orange SPV, Motorola)

Ingeniørhøjskolen i Århus Slide 4 af 11 Problems with small computers Limited memory and processing power Limited storage facilities (no hard drive) Limited bandwidth (for mobile phones using GSM/GPRS) –UMTS is in place however (30-50% coverage) and soon to have a break-through (and Edge, and distributed WLAN) Not possible with full.NET Framework or J2SE JDK, big XML parser API’s – big footprints SOAP and XML is bandwidth + processor demanding! CONCLUSION: –SOAP CLIENT ONLY – NOT SERVER –Lightweight parser capabilities – not all features

Ingeniørhøjskolen i Århus Slide 5 af 11 Pocket PC (Windows CE) Pocket PC and Windows CE based operating systems does not have built in SOAP facilities But it is possible with eMbedded Visual Studio –Using Microsofts SOAP implementation for Windows CE us/dnppc2k2/html/ppc_reservices.asphttp://msdn.microsoft.com/library/default.asp?url=/library/en- us/dnppc2k2/html/ppc_reservices.asp –Or using Simon Fells PocketSOAP COM component – which even Microsoft has welcomed Compact Framework –SOAP is integrated in the.NET framework. No need to use eMbedded Visual Studio

Ingeniørhøjskolen i Århus Slide 6 af 11 SmartPhone API As with the Windows CE – using Embedded Visual Studio 3.0 it is possible to consume Web services for the Smartphone platform – –All links are available at the course website BUT THIS IS NOT AN EASY TASK –The.NET CF framework also works for this device

Ingeniørhøjskolen i Århus Slide 7 af 11 Pocket TV Viewer -.NET CF

Ingeniørhøjskolen i Århus Slide 8 af 11 J2ME 2006: Apx. 70% of all new mobile phones support the Java 2 Mobile Edition SDK (Gartner Group) – today over 50% No build-in support for SOAP (yet) Does not run the JVM – but KVM (Kilo Virtual Machine) Therefore you cannot use AXIS and others At least two open source projects, one of them kSOAP, building on the Enhydra kXML is designed for Mobile Phones and PDA’s (like the Palm) – –kSOAP: (footprint: 42K) –WingFoot: (footprint: 35K)

Ingeniørhøjskolen i Århus Slide 9 af 11 Developing for J2ME Take a look at –CLCD, MIDP May want to download JBuilder Enterprise Edition Trial Version from –Also download MobileSet –Important with Enterprise Edition because of JAD file –Comes complete with J2ME JDK, Screen designer, Emulator, as well as JAD deployment utillity

Ingeniørhøjskolen i Århus Slide 10 af 11 JBuilder & MobileSet

Ingeniørhøjskolen i Århus Slide 11 af 11 J2ME in action (JBuilder & MobileSet)