July 2009
Intermediate to advanced
464 pages
12h 25m
English
Content preview from Palm webOSBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 8. Application Services
So far we’ve looked at UI elements and web service requests, but very little of what we’ve done is anything you couldn’t do in a sufficiently capable web browser. What makes Mojo particularly powerful is its access to services that encapsulate both low-level hardware capabilities and higher-level data services that provide access to Palm webOS Synergy features, cloud services, and more. It is this access to the device and its services that lets developers build applications with the capabilities of a native application.
Most intriguing are the cloud-based services—emerging web services from many providers, including Palm—that provide limitless potential for added capability.
The Web as expressed through cloud service APIs is a platform in itself, and the webOS service architecture enables access to Palm cloud services. You can also access third-party cloud services or your own services through Ajax calls or other direct service interfaces, and build applications that integrate or mash up these services in unique ways.
In this chapter and the next, we’ll explore a number of the available Mojo services. This chapter introduces the service architecture and presents the calling conventions that all Mojo services share. We will extend the News application to launch the web browser and to allow users to share stories over email or text messaging.
In Chapter 9, we conclude our discussion of the service layer by delving into cloud services and lower-level system ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.