Seweryn Niemiec

Eclipse GMF – Enabling UUIDs in Semantic model – The Simplest Way

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This solution is for those who use also GMF. In one of your plug-ins (or create a new empty plug-in for that) add following section to plugin.xml: <extension point="org.eclipse.emf.ecore.extension_parser"> <parser type="MY_SEMANTIC_MODEL_FILE_EXTENSION" class="org.eclipse.gmf.runtime.emf.core.resources.GMFResourceFactory"> </parser> </extension> It will make EMF use GMFResourceFactory for XMI [de]serialization. GMFResourceFactory enables usage of UUIDs. Don’t forget to replace MY_SEMANTIC_MODEL_FILE_EXTENSION with your … Read more

Problem with GWT-Ext in hosted mode on Linux

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Currently I’m writing NetFlow analyser as a Rich Internet Application. After long consideration and evaluation of available open-source technologies I have concluded that GWT will be the best shot in this case (now I’m not so sure any more, but this is another story). To make building nice user interface easier I have decided to equip user side CLASSPATH with GWT-Ext library. GWT-Ext reuses ExtJS and ExtJS needs some underlying JavaScript framework. A lot of people use YUI as base for ExtJS, so automatically I have started to use it too. And this is where the first problems arose.

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Photos from my bike trip through Szczecin wharves

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Because of the final of the Tall Ships’ Races 2007 in Szczecin one of the gates to Drobnica Port Szczecin was widely opened and I was able to legally get inside. Drobnica Port is connected with Gryfia Shipyard, and then you can get to Szczecin part of Szczecin-ÅšwinoujÅ›cie Port from which you can go without … Read more

New Feature On My Home Page: Gallery

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The first gallery contains few 3D images, I have created quite long time ago using Blender 3D, a great 3D modeling and rendering tool. Some images were finally rendered by yafray renderer. Example image included. Click on thumbnail to pop-up bigger one. All images can be seen in my local gallery or on flickr.

XEland rewritten from scratch

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I have decided to reactivate XEland project. XELand is a small program, which generates night landscapes as stereo pairs for cross-eye viewing. Original version was written in C++/Gnome and had continually problems with compilation (due to lots of dependencies). Java version is of course free of such problems. Currently it uses two map generation methods … Read more

Java Generics: Instantiating Objects Of Type Parameter Without Passing Class Literal To Instance

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Cause generics in Java 1.5 and 1.6 are implemented using erasure, in most cases you can not get class object for type parameter, which means that in your generic classes you can not instantiate objects of type parameters. For example, the following code will not compile:

class Foo<T> {
        T field;
        public void bar() {
                field = new T(); // error
        }
}

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