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FreeChart with Groovy and Apache POI

The point of this article is to show you how to parse data from an Excel spreadsheet that looks like this:and turn it into a series of graphs that look like this:Recently I was ...
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Groovy DSL – A Simple Example

Domain Specific Languages (DSLs) have become a valuable part of the Groovy idiom. DSLs are used in native Groovy builders, Grails and GORM, and testing frameworks. To a developer, ...
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Grails Custom AuthenticationProvider

In order to tighten up security in our new Grails app I went about implementing the Spring Security Plugin. Getting it up and running with a standard username/password scenario was ...
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GitHub Social Graphs with Groovy and GraphViz

The Goal Using the GitHub API, Groovy and GraphViz to determine, interpret and render a graph of the relationships between GitHub users based on the watchers of their repositories. ...
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Using Groovy scriptlets inside a *.docx document

Introduction One of my recent projects required automated generation of contracts for customers. Contract is a legal document of about 10 pages length. One contract form can be applied ...
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Exposing Functionality Over HTTP with Groovy and Ultra-Lightweight HTTP Servers

I needed a quick and simple way to enable some users to query a table and figured out that the easiest solution was to use an embedded, ligthweight HTTP server so that the users could ...
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Groovy 1.8.0 – meet JsonBuilder!

Groovy 1.8.0 released in April brought a lot of new features to the language, one of them is native JSON support through JsonSlurper for reading JSON and JsonBuilder for writing JSON. I ...
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Simple but powerful DSL using Groovy

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 ...
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Using Groovy – A soft introduction

Groovy is an object-oriented programming language for the Java platform and can be used as a scripting language. Most of us but instead of using Groovy alone, we use Grails (web framework ...
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