Hello all,
I've been reading up on OSGi, checked out Neil Bartlett's excellent tutorial, and checking out some of the examples available for Felix. The reason for this is that for my master thesis, I'm developing a context-aware application on Android and plan to include a context-awareness framework that has been developed on Oscar. Although it doesn't work straight out of the box on Felix, I suppose some minor adjustments will fix this. To shortly explain what it does: the framework contains a context broker, allowing the registration of context sources, which can be looked up by context consumers. These are all implemented as separate bundles. It also has a reasoning engine (also made up out of a number of bundles), allowing notifications to be triggered by certain context properties. To do a notification, the reasoning engine calls a specified method of a registered bundle. For more info, check out the Amigo Project. My idea is to get data from the phone, like its location or some information entered by the user, into the framework, so that it can be made available to the reasoning engine and to other registered services. For instance, based on the location, a certain context consumer could determine the weather at that location and send it back to the phone. The location could also be used by the reasoning engine to trigger a notification when the user is close to a store. The question is, what is the best way to establish the communication between the mobile device and the context-awareness server running on Felix? Does the Android phone need to run an OSGi-platform, that communicates somehow with the other OSGi-platform? Something like: Phone -> context source bundle, running on OSGi on Android -> context source bundle running on OSGi on server Or should I use another way, like some RMI-based objects on the server, that can be looked up in a registry and can be used to call methods of the context source bundle? Like: Phone -> RMI-object on server -> context source bundle on OSGi on server Scalability is also an issue, how is it possible to have multiple phones, thus multiple context sources providing their data to the server? Hopefully there is someone who could shed some light on this for me, finding the best solution has been bugging me for some time now.. Of course, if you want to know more about my assignment, I'd be happy to explain it some more, but I thought it to be best to keep it as simple as possible here. Thank you very much! Freek Uijtdewilligen University of Twente, the Netherlands Logica, the Netherlands Please help Logica to respect the environment by not printing this email / Pour contribuer comme Logica au respect de l'environnement, merci de ne pas imprimer ce mail / Bitte drucken Sie diese Nachricht nicht aus und helfen Sie so Logica dabei die Umwelt zu schuetzen / Por favor ajude a Logica a respeitar o ambiente nao imprimindo este correio electronico. This e-mail and any attachment is for authorised use by the intended recipient(s) only. It may contain proprietary material, confidential information and/or be subject to legal privilege. It should not be copied, disclosed to, retained or used by, any other party. If you are not an intended recipient then please promptly delete this e-mail and any attachment and all copies and inform the sender. Thank you.
