Feeds

Getting to grips with Callisto

Inside the Eclipse release

3 Big data security analytics techniques

Eclipse is not just a Java IDE, it is a tools platform, which supports an increasing number of projects. The broad scope of these was apparent in Callisto, the code name for a set of simultaneous project releases earlier this summer.

There are 10 projects in Callisto, including Java and C++ development tools, visual editors, database and reporting tools. It is an impressive bundle.

"We haven't actually found anything else coming from open source that has done quite the same thing," executive director Mike Milinkovich said. "Shipping seven million lines of code put together by 260 committers in 12 different countries working for at least 15 different organisations is a pretty significant achievement."

Figure 1 shows the complete Callisto components.

Few people will want to install all of Callisto, but in the interests of good journalism, I did so. Installation is a matter of downloading the Eclipse SDK and then using Software Updates, on the Help menu, to add the projects you want.

As you can see from Figure 1, there are numerous components.Showing "out of memory" conditions experienced.

Download and install took a while, but everything worked well on my Windows XP box, though Eclipse seemed to feel the strain with occasional "Out of memory" error messages. [Reader Alex Blewitt notes that the out of memory exception is really a JVM issue, though it would be nice if Eclipse would handle it a little more gracefully (it offers to shut down, then fails to do so on our system). He writes: "The JVM defaults to something like 64m of permanent generation space, and when you start bolting on lots of plugings, that can grow. The fix is to add -XX:MaxPermSize=128m into eclipse.ini on a separate line after the -vmflags argument. This is only an issue on Sun VMs."]

The main rationale behind Callisto is to deliver significant new releases on a predictable schedule. "We feel that is very important for encouraging commercial adoption," says Milinkovich. "This is now the third year in a row where we shipped in the last week of June." However, in past years the platform shipped first, followed later by individual projects. This year everything shipped together.

It is not only a matter of good marketing. There is also the problem of managing dependencies. Keeping up-to-date with multiple Eclipse projects can be frustrating, because of dependencies both on the core platform and between projects. Maintaining multiple Eclipse installations becomes essential.

So was Callisto born of necessity? "Somewhere in the middle," Milinkovich admits. "There's definitely a dependency issue that we manage between the different projects, and Callisto was born out of a desire to make it simpler for our consumers. But the drive for doing Callisto was very much a bottoms-up affair which came from a number of the leaders in the project community. It had a great side-effect as well, which is it forced a lot more interaction between the different projects."

Unfortunately, Callisto has rough edges which remind you that it comes from an open source community rather than a slick commercial release [although some commercial tool releases are none too slick neither – Ed].

The version numbers on the software update dialog reveal that not everything is finished, particularly the Data Tools Platform, which is at version 0.9 and with a number of missing pieces. The Visual Editor is Release Candidate 2, and so is the Java EMF Model. Continual dialogs remind you that code is unsigned and risky to install. Still, the point is that they do all work together.

Top three mobile application threats

Next page: Beyond Java

More from The Register

next story
This time it's 'Personal': new Office 365 sub covers just two devices
Redmond also brings Office into Google's back yard
Batten down the hatches, Ubuntu 14.04 LTS due in TWO DAYS
Admins dab straining server brows in advance of Trusty Tahr's long-term support landing
Inside the Hekaton: SQL Server 2014's database engine deconstructed
Nadella's database sqares the circle of cheap memory vs speed
Microsoft lobs pre-release Windows Phone 8.1 at devs who dare
App makers can load it before anyone else, but if they do they're stuck with it
Oh no, Joe: WinPhone users already griping over 8.1 mega-update
Hang on. Which bit of Developer Preview don't you understand?
Half of Twitter's 'active users' are SILENT STALKERS
Nearly 50% have NEVER tweeted a word
Internet-of-stuff startup dumps NoSQL for ... SQL?
NoSQL taste great at first but lacks proper nutrients, says startup cloud whiz
Windows 8.1, which you probably haven't upgraded to yet, ALREADY OBSOLETE
Pre-Update versions of new Windows version will no longer support patches
IRS boss on XP migration: 'Classic fix the airplane while you're flying it attempt'
Plus: Condoleezza Rice at Dropbox 'maybe she can find ... weapons of mass destruction'
prev story

Whitepapers

Top three mobile application threats
Learn about three of the top mobile application security threats facing businesses today and recommendations on how to mitigate the risk.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Five 3D headsets to be won!
We were so impressed by the Durovis Dive headset we’ve asked the company to give some away to Reg readers.
SANS - Survey on application security programs
In this whitepaper learn about the state of application security programs and practices of 488 surveyed respondents, and discover how mature and effective these programs are.