ABAP_to_the_Future

2
New Language Features in ABAP 7.4
other application servers. In the case of CIC0, the program could subscribe to be
notified about incoming phone calls as op posed to having to constantly poll for
them.
In the same way, the ALV report has subscribed to be notified about new orders
being entered into SAP, the program that processes the new order on one application
server publishes that fact to all the application servers, and running
instances of the ALV report on any given server can react to this and refresh their
displays, again without having to constantly poll.
The mechanics of how to do this are qu ite complicated and outside the scope of
this book. For more information, we recommend the series of blogs mentioned at
the end of the chapter, which cover everything from Ping-Pong games to SAPUI5
applications, all enabled by this technology.
2.11 Summary
In this chapter, you have read about the somewhat radical changes that have been
introduced in the ABAP language in recent years, starting with 7.02 but most
notably in release 7.4. This chapter cataloged the vast array of new language constructs
that have been introduced into ABAP and showed examples of where they
might be useful in your day-to-day work.
Now that you have learned about the development environment (Eclipse) and the
increased capabilities of the language you program in, it’s time to move on to the
first step of creating a program, which—contrary to what you might expect—is all
to do with testing.
Recommended Reading
왘 WebSocket Communication with ABAP Channels: http://scn.sap.com/community/
abap/blog/2013/07/18/abap-news-for-release-740--abap-channels (Horst Keller)
왘 Real-Time Notifications and Workflow using ABAP Push Channels:
http://scn.sap.com/community/abap/connectivity/blog/2014/10/16/
real-time-notifications-using-abap-push-channels-websockets (Brad Pokroy)
왘 WebSocket Communication Using ABAP Push Channels: http://scn.sap.com/
community/abap/connectivity/blog/2013/11/18/websocket-communication-usingabap-push-channels
(Masoud Aghadavoodi Jolfaei)
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