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Tag Archives: DSL

Java 8 Friday: Most Internal DSLs are Outdated

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At Data Geekery, we love Java. And as we’re really into jOOQ’s fluent API and query DSL, we’re absolutely thrilled about what Java 8 will bring to our ecosystem. Java 8 Friday Every Friday, we’re showing you a couple of nice new tutorial-style Java 8 features, which take advantage of lambda expressions, extension methods, and other great stuff. You’ll find ...

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Spring Integration Java DSL sample

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A new Java based DSL has now been introduced for Spring Integration which makes it possible to define the Spring Integration message flows using pure java based configuration instead of using the Spring XML based configuration. I tried the DSL for a sample Integration flow that I have – I call it the Rube Goldberg flow, for it follows a ...

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Turning Assertions Into a Domain-Specific Language

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Assertions are an essential part of our unit tests. And yet, it so easy to neglect them. That is a shame because if we overlook the importance of assertions, the assert section of our tests becomes long and messy. Sadly, most tests which I have seen (and written) suffer from this problem. This blog post describes how we can get ...

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FitNesse your ScalaTest with custom Scala DSL

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This article won’t be about FitNesse. As matter of fact I don’t like this tool very much and it seems to be loosing momentum, judging by the traffic on an official mailing list. Instead we will implement trivial internal DSL on top of Scala to simplify testing code, inspired by DoFixture. DoFixture in FitNesse allows one to write very readable ...

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Simple but powerful DSL using Groovy

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In one of my projects we had very complicated domain model, which included more than hundred of different domain object types. It was a pure Java project and, honestly, Java is very verbose with respect to object instantiation, initialization and setting properties. Suddenly, the new requirement to allow users define and use own object models came up. So … the ...

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Apache Camel – A little Scala DSL example

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So we have a Scala DSL in Apache Camel for many years now, and I guess its about time I wrote a little blog entry about this (has been on my todo list for a while). So the Scala DSL is of course using the Scala programming language which has many bells and whistles over plain Java. However the uptake ...

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