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MOM für mobile Endgeräte

Bei der heutigen Erstellung verteilter Applikationen wird das Problem des Verbindungsverlustes oftmals vernachlässigt. Wird die Verbindungen zwischen den Systemen unterbrochen, ist die Anwendung neu aufzusetzen. Die bereits getätigten Eingaben und angestoßenen Abläufe werden zurückgesetzt und sind dadurch verloren. Dieses Problem taucht in einem festen LAN nur sehr selten auf und findet deshalb oftmals keine besondere Beachtung.

 

Im mobilen Bereich sieht es anders aus. Hier passiert es fast regelmäßig, daß die Verbindung zwischendurch unterbrochen oder die Netzabdeckung zeitweise nicht gewährleistet ist. Um dort wieder aufzusetzen, wo die Verarbeitung unterbrochen wurde, ist ein Session-Management unter Verwendung von Message-Mechanismen notwendig.

 

jtom ist eine Message-oriented Middleware (MOM) für mobile Endgeräte und stellt dieses in der Vollversion zur Verfügung; transparent für die Anwendungsentwicklung.

 

Weitere allgemeine Informationen über Konzepte und Vorgehen von MOMs im Zusammenhang mit Java finden Sie unter: http://java.sun.com/products/jms/