This article provides a practical introduction to graph databases with a focus on the Groovy ecosystem. It explores Grails GORM support for Neo4j as well as query comparisons between the Neo4j Cypher language, SQL and the Gremlin graph DSL.
This article originally appeared in the May 2013 issue of GroovyMag.
Freemind is an Open Source mind mapping tool. Version 0.9 (released Feb 2011) introduced Groovy scripting that can be used for processing the mind map nodes. In this article we’ll look at a couple of use cases and the supporting scripts.
This article originally appeared in the February 2013 issue of GroovyMag
This article gives an introduction to working with XML / HTTP APIs from Groovy in the context of a real world scenario using the GoogleCode API.
This article first appeared in the March 2013 issue of GroovyMag. Since the script was originally written Google deprecated the Issue Tracker API and scheduled it for closure on the 14th June 2013. So whilst the script is now for interest only, the principles are still valid for other purposes.
Apache Mahout is a scalable machine learning framework that can be used to create intelligent applications. In this article we’ll see how Mahout can be used to create personalised recommendations within a Grails application.
This article originally appeared in the February 2012 edition of GroovyMag.
Apache Lucene is the leading open source search engine and is used in many businesses, projects and products. Lucene has sub-projects which provide additional functionality such as the Nutch web crawler and the Solr search service. This article gives an introduction to Lucene, a tutorial on three Grails Lucene plugins and a comparison between them.
This article originally appeared in the September 2011 edition of GroovyMag.
Browser Push is the collective term for techniques that allow a server to send asynchronous data updates in near real time to a browser. This article provides an overview of browser push and then provides a sample of Grails usage by extending the example project from the ‘Using JMS in Grails‘ article in the June 2011 edition to send event-driven updates to the browser.
This article originally appeared in the July 2011 edition of GroovyMag.
The Java Message Service (JMS) API is one of the cornerstones of the Java Enterprise Edition that allows applications to reliably communicate using asynchronous messages sent via a message broker. This article provides an introduction to JMS, the JMS support in the Spring Framework and then provides practical examples of usage within Grails using the JMS plugin.
This article originally appeared in the June 2011 edition of GroovyMag.