Eclipse indigo upgrade causes missing builder errors
It’s frustrating to find all your settings gone when you upgrade eclipse versions and if you’re pedantic about certain settings (like I am) it can take you almost an entire day to upgrade versions (with everything working just the way you like it). With Indigo, fortunately, none of the manual settings were necessary. There was a very nice import wizard that allowed me to import my old Helios installation. The wizard is in File->Import->Install->From existing installation.
I was really hoping everything would go as planned but it didn’t. (It’s okay, I had very little expectation it would) Maven refused to build any projects. I checked the maven version and it was the embedded one. I figured since this was a little older than the latest maven3 release, it could be causing problems so I changed the installation to use a manually installed version of maven.
No dice. After a few minutes of searching, I found the problem (or so I thought). The maven builder that eclipse was using was missing.
That’s odd. Maven integration is built into Indigo now so there is no reason why it shouldn’t find the builder. Not good. I tried a few things but then I found this very useful thread on stackoverflow. It turns out that the .project eclipse files weren’t updated correctly. I right clicked on the broken projects and saw an option to “Convert into maven project” in the Configure menu.
On clicking this option, eclipse “transformed” my project into a maven project. I checked the .project and noticed that it had added another builder in there. All good but the project still doesn’t build. Grrrr… Check the builders again and this is what I see
Why didn’t it remove the useless builder? If I uncheck the missing builder my build still doesn’t run! Argh.
I see a dependency which doesn’t look like it should be in my build path, this is added because of the old builder (which I hate by now).
Once I remove this dependency from the build path it works! I’d suggest that you not upgrade eclipse on a weekday like I did (on a Wednesday too!) because this is one of the more frustrating downsides of eclipse. Hopefully, the next upgrade will be easy(hah!).
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