Comments on: Eclipse 4.0 and tutorial on writing e4-RCP-application released

By: Thomas

Thomas — Fri, 11 Nov 2011 14:18:52 +0000

Interesting tutorial.
I also ran into this nullpointer with eclipse 4.1. It works with 4.0. (older release of org.eclipse.e4.ui.workbench.swt)
Another thing to mention: Chapter “Event-System”. You didn’t mention, that you’ve created the interface EventConstants.

By: Andreas Dessner

Andreas Dessner — Thu, 15 Sep 2011 13:00:58 +0000

Very nice e4 tutorial ! But wenn i try to start the example the same Problem here: Feature ‘bindingContextId’ not found.

will check your blog and hope you will find the time to update the sources

By: Stefan Nöbauer

Stefan Nöbauer — Wed, 31 Aug 2011 14:35:44 +0000

Thanx for the quick answer. Is there a fast way to solve the NPE in the ShellActivationListener?

Caused by: java.lang.NullPointerException
at org.eclipse.e4.ui.internal.workbench.swt.ShellActivationListener.getShellContext(ShellActivationListener.java:193)
at org.eclipse.e4.ui.internal.workbench.swt.ShellActivationListener.activate(ShellActivationListener.java:114)
at org.eclipse.e4.ui.internal.workbench.swt.ShellActivationListener.handleEvent(ShellActivationListener.java:73)

By: Tom Schindl

Tom Schindl — Wed, 31 Aug 2011 14:13:57 +0000

The problem is that we’ve changed the model slightly in this area while working on 4.1 but I haven’t had the chance to fix my tutorial sources

By: Stefan Nöbauer

Stefan Nöbauer — Wed, 31 Aug 2011 14:10:08 +0000

Hi Tom,
Thanx very much for the tutorial. I just have one question about the NPE. I still get this Exception on the 4.1 Platform. What exaclty is the problem?

i also get another problem when running the code downloaded from git:
org.eclipse.emf.ecore.resource.impl.ResourceSetImpl$1DiagnosticWrappedException: org.eclipse.emf.ecore.xmi.FeatureNotFoundException: Feature ‘bindingContextId’ not found. (platform:/plugin/org.eclipse.e4.demo.mailapp/Application.e4xmi, 30, 166)
at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.handleDemandLoadException(ResourceSetImpl.java:315)
at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoadHelper(ResourceSetImpl.java:274)
at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:397)
at org.eclipse.e4.ui.internal.workbench.ResourceHandler.loadResource(ResourceHandler.java:187)
at org.eclipse.e4.ui.internal.workbench.ResourceHandler.loadBaseModel(ResourceHandler.java:167)
at org.eclipse.e4.ui.internal.workbench.ResourceHandler.loadMostRecentModel(ResourceHandler.java:236)
at org.eclipse.e4.ui.internal.workbench.swt.E4Application.loadApplicationModel(E4Application.java:346)

What am I doing wrong?

By: Ben

Ben — Tue, 26 Jul 2011 20:07:22 +0000

Thanks Tom! I’m sorry – I’m a bit of a git noob. I see the branches now. I guess what confused me was that there appears to be no source in master. I’ll be watching the blog for updates. Thanks again.

By: Tom Schindl

Tom Schindl — Tue, 26 Jul 2011 17:28:35 +0000

I started updating the stuff to 4.1 but didn’t had time to finish it. The source is also in the git repo and found in various branches. I’m going to take a look (maybe tonight) and publish a blog post when done. So if you simply subscribe to my blog you should get informed when I’m done.

By: Ben

Ben — Tue, 26 Jul 2011 15:17:34 +0000

First of all, thanks for the tutorial – it’s a nice way to learn about E4. However, I have run across a number of issues as I try to go through the tutorial. For example:

* Some of the examples do not seem to run on Eclipse 4.1. For example, opening the preference dialog bombs in 4.1 with java.lang.NullPointerException at org.eclipse.e4.ui.internal.workbench.swt.ShellActivationListener.getShellContext(ShellActivationListener.java:193). Note: I ran the code directly from chapter8.zip to make sure this wasn’t due to my own mistake. This code works in Eclipse 4.0 however.

* Running the code from contributions.zip in Eclipse 4.1 results in org.eclipse.emf.ecore.xmi.FeatureNotFoundException: Feature ‘bindingContextId’ not found. Trying Eclipse 4.0 yields java.lang.ClassNotFoundException: org.eclipse.e4.core.commands.CommandServiceAddon and others.

* The document suggests all the source code is available from the git repository, but it looks to me like the git repository only contains the document – not the source. I was hoping to gain a little more insight about the differences between 4.0 and 4.1 via the history in git.

By: Holger Sachse

Holger Sachse — Tue, 22 Feb 2011 20:21:33 +0000

Done with Bug 337890.

Holger

By: Tom Schindl

Tom Schindl — Tue, 22 Feb 2011 18:18:24 +0000

Can please file a bug. There is the possibility of a regression in the rendering stuff and or I’m simply creating invalid things. Please cc me on the bug