This episode of the ABAP Freak Show looks in detail at large database objects – STRINGS and RAWSTRINGS. Although we have had the ability to use unlimited length STRING and RAWSTRING fields in database tables in ABAP since WebAS 6.10, NetWeaver 7.0 Enhancement Package 2 brings several new features which help to optimize access to these fields. In this eLearning we study both the new Locator and Stream object for reduced resource consumption when working with just such large fields from the database.

You can download a high resolution version MP4 version of the video here:
http://blip.tv/file/get/Thomas_jung-AFSJune17th2009LOBStreamsLocators496.mp4

This episode of the ABAP Freak Show looks in detail at the new Web Dynpro ABAP Notification Service that will ship later this year as part of NetWeaver 7.0 Enhancement Package 2. This technology goes by many names – Long Polling, Reverse AJAX, Comet – but regardless the name the idea is to allow data and updates to appear to be pushed from the server to the client. In this eLearning we look at the infrastructure in ABAP that has been built to support such push without putting too much load on either the client or the server. We also look at implementations of this technology for long calculations, inter-session communication, and asynchronous external communication. We also show a real world example using the ESME application for a real time messaging service built into a business transaction.

For more information on ESME: http://blog.esme.us/ or http://cwiki.apache.org/confluence/display/ESME/Index

You can download a high resolution version MP4 version of the video here:
http://blip.tv/file/get/Thomas_jung-AFSJune3rd2009ABAP702NotificationService991.mp4

You can also download an iPod/iPhone version:
http://blip.tv/file/get/Thomas_jung-AFSJune3rd2009ABAP702NotificationService474.mp4