Home » Author Archives: Frank Appel

Author Archives: Frank Appel

Clean Sheet – an Ergonomic Eclipse Theme for Windows 10

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Clean Sheet is an ergonomic Eclipse theme for Windows 10. It has been attuned to lessen visual fatigue and eyestrain, based on a clean and low glare look and feel. It incorporates well-balanced color selections that offer harmonic syntax highlighting and focus on readability. Along with custom scrollbars, it additionally strives to satisfy unobtrusively contemporary aesthetic demands. This post explains ...

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What the Heck Is Mutation Testing?

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In recent times, I came repeatedly upon the term mutation testing. Since the word is that this approach is able to detect test safety net gaps in a way which goes beyond code coverage, I took my time to catch up on the topic and gave it a try. This post summarizes my findings as a quick introduction to the ...

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Clean Integration Testing with JUnit Rules

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The benefits of JUnit Rules, especially when dealing with integration testing, can hardly be overrated. In this post, we’ll shine a light on the usefulness of ExternalResource extensions. These simplify fixture control in cases where we have to work with external-resource-abstracting third-party libraries. As an example, we’ll have a look at how to verify the correct retrieval of a list ...

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OSGi Service Test Helper: ServiceCollector

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OSGi services come in handy for the development of systems based on loosely coupled components. But loose coupling can make it difficult to recognize problems related to dangling service references. Thus we usually run integrations tests to ensure the availability of service components at runtime. With the intention to reduce boilerplate needed for these kind of tests, I have written ...

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Apache FOP Integration with Eclipse and OSGi

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Apache FOP is an open source print processor driven by XSL formatting objects (XSL-FO). It can be quite useful to transform data objects into a PDF for example. However it turned out to be somewhat cumbersome to get it integrated into PDE and finally up and running as OSGi Service. Because of this I provided a P2 repository that contains ...

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Sacrilege – a Custom SWT Scrollbar

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SWT is a thin abstraction layer on top of native OS widgets. Which is a very good thing if you intent that your applications integrate well with the OS look and feel. But as a trade-off this approach limits styling capabilities significantly. In particular I perceive the native SWT scrollbar often disruptive on more subtle view layouts. Coming across this ...

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SWT Mouse Click Implementation

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Doing a bit of SWT custom widget development lately, I stumbled across the question why is there no such thing as a default SWT mouse click listener? As this subject raises once in a while, I thought writing a word or two about the rational ground behind – and how to implement mouse clicks in general – would not hurt. ...

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Deferred Fetching of Model Elements with JFace Viewers

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Model elements displayed by Eclipse JFace Viewers sometimes take a considerable amount of time to load. Because of this the workbench provides the type IDeferredWorkbenchAdapter to fetch such model elements in background. Unfortunately this mechanism seems to be supported only for AbstractTreeViewer derivates via the DeferredTreeContentManager. Hence I developed a generic DeferredContentManager of my own… It enables background loading for ...

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OSGi Testsuite: Introducing Classname Filters

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OSGi Testsuite is a JUnit test-runner that collects dynamically test classes for execution. It has been published by my fellow Rüdiger about a year ago and proven useful in some projects already. However for gonsole we had to use an ugly patch because version 1.0 only supported .*Test postfix matching for test class names. I solved this problem with version ...

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Efficient Creation of Eclipse Modules with Maven Archetype

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Maven Archetype is a project templating toolkit that provides developers with the means to generate parameterized versions of built-in or custom scaffolding artefacts. Recently I applied it to our Xiliary P2 repository to achieve automation of Eclipse module stubs creation. As it worked out well enough, I thought it might be worth while to share my experiences in this post. ...

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