January 2010
Intermediate to advanced
479 pages
11h 5m
English
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Chapter 10. Writing with Friends: A Collaborative Text Editor
WHAT'S IN THIS CHAPTER?
Learning the Operational Transformation algorithm
Using service discovery to probe features
Extending XMPP stanzas
People used to mail manuscripts back and forth to collaborate. Over the years, as technology improved, this turned into file sharing via disks and then sharing over e-mail. Technology has now reached a point where multiple people, even in large groups, can simultaneously edit the same document over the network, and the familiarity of the Web has made it both easy and common. Given your previous experience with XMPP applications, it should be no surprise to you that XMPP provides an ideal medium for collaborative document editing.
One of the latest examples of such applications is Google Wave, a rich, media-filled, collaborative space for groups of people to work on shared documents. When Google needed a protocol to facilitate such a platform, it turned to XMPP. On top of XMPP, Google has built a fantastic platform for collaborative editing based on the principles of operational transformation. It has also chosen to do its protocol design work on the Wave protocol in the open at http://www.waveprotocol.org.
In this chapter, you will build a collaborative text editor based on the same principles as Google Wave — operational transformation. Although the application is designed for collaboration between a pair of users, the underlying algorithms can be scaled to arbitrary numbers of collaborators. ...
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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.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.