Feeds

Android tunes into OSGi

Mechanized, mobile modularity

Top 5 reasons to deploy VMware with Tegile

EclipseCon The Eclipse Foundation's announcement of a runtime project got a lot of coverage, as the one-time tools-centric initiative moved deeper into runtime deployment and management.

OSGi on mobile was one area that generated particular interest at EclipseCon. And not just any mobile: we're talking Google's Linux-based Android.

Getting Android to run on Concierge and Equinox was the subject of one packed session. Concierge is an optimized OSGi R3 implementation, and Equinox, a lightweight OSGi-based runtime that serves as the core of the Eclipse Framework and is a key component of the new Eclipse runtime.

OSGi defines an architecture for developing and deploying modular applications and libraries. It's used for mobile and embedded devices, desktop applications, and server applications hosted on a range of operating systems. It's also an enabler of the Eclipse plug-in model.

Why the interest in Android on OSGi, though? The specification provides a common model for writing and deploying applications to local or remote computers in modularized form. Instead of forcing developers to create monolithic apps, the spec potentially enables smaller components to work together.

An OSGi framework on Android allows for the possibility that code developed elsewhere can run unmodified on the Android environment. And that makes it possible for developers to build Android apps as small bundles that provide little more than the GUI code, with all the other work carried out by bundles that can run on any Java platform that supports an OSGi framework.

Session presenters BJ Hargrave, IBM lead architect for OSGi technologies, and independent Java developer and consultant specializing in the Eclipse Rich Client Platform and OSGi Neil Bartlett, credited the work of software engineers Karl Pauls and Marcel Offermans for developing techniques they used on their project. Pauls and Offermans managed to get Apache Felix, the OSGi R4 Service Platform implementation, running on Android.

One technique in particular, which Bartlett called "dexification", takes advantage of a utility within the Android virtual machine (called Dalvik). The utility can convert Java class files to the native Dalvik format - into what are known as DEX files.

In another session, meanwhile, AOL, Cloudsmith and Bug Labs demonstrated an OSGi-based mobile application that linked a group of "virtual distributions" delivered as a service bundle for deployment on OSGi-enabled Android and Bug Labs' mobile devices.

Cloudsmith's web-based component aggregation service was used to publish and consume the OSGi bundles. Cloudsmith also served as an assembly mechanism for separate developer distros of Android/Felix and Bug's Dragonfly SDK.

AOL's Xdrive was used as an infrastructure provider for Eclipse Spaces and as an OSGi bundle providing virtual storage for the demonstration application. Eclipse Spaces was incorporated as a publishing mechanism for newly developed components.®

Security for virtualized datacentres

More from The Register

next story
Brit telcos warn Scots that voting Yes could lead to HEFTY bills
BT and Co: Independence vote likely to mean 'increased costs'
Phones 4u slips into administration after EE cuts ties with Brit mobe retailer
More than 5,500 jobs could be axed if rescue mission fails
New 'Cosmos' browser surfs the net by TXT alone
No data plan? No WiFi? No worries ... except sluggish download speed
Radio hams can encrypt, in emergencies, says Ofcom
Consultation promises new spectrum and hints at relaxed licence conditions
Google+ GOING, GOING ... ? Newbie Gmailers no longer forced into mandatory ID slurp
Mountain View distances itself from lame 'network thingy'
Vodafone to buy 140 Phones 4u stores from stricken retailer
887 jobs 'preserved' in the process, says administrator PwC
Bonking with Apple has POUNDED mobe operators' wallets
... into submission. Weve squeals, ditches payment plans
Drag queens: Oh, don't be so bitchy, Facebook! Let us use our stage names
Handbags at dawn over free content ad network's ID policy
Comcast exec: No, we haven't banned Tor. I use it. You're probably using it
Keep in mind if, say, your Onion browser craps out on Xfinity
prev story

Whitepapers

Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.
WIN a very cool portable ZX Spectrum
Win a one-off portable Spectrum built by legendary hardware hacker Ben Heck
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Beginner's guide to SSL certificates
De-mystify the technology involved and give you the information you need to make the best decision when considering your online security options.