Posts

30 December 2016 / Howto / Apache / SSL / Security
Just recently I finished an article for the Dutch Java magazine about securing your website by means of https connections. In the article, we (Ivo Woltring and I) describe details on how to get a certificate for your Webserver from the LetsEncrypt CA. The end result of those steps is a site that only allows for https connections. This solved the problem of others listening in on your visitors. Hacking your site is definitely more difficult, but not all possibilities are resolved.
18 November 2016 / Java / Howto
This post describes a implementation for streaming a String of space separated Key Values with Java 8. In order to implement a streaming keyvalue reader two simple classes are implemented. One to handle navigation in the string and one to make a Iterable from the String. The implementation I provide is basic but has enough extension points to meet more extensive requirements. The problem. We all have faced the same problem when dealing with data from other sources.
07 October 2016 / Getting_Started / Maven / Java / Sonatype / Howto / Tools / neo4j
This post is part of a multipart series about creating a graph off all available Maven dependencies. In the article for the Neo4j extension I described the input for the extension. This article describes the model that is used to create the required JSon. I start of with a small introduction to Vertices and edges before going into the implementation. Vertices and Edges In mathematics, and more specifically in graph theory, a vertex (plural vertices) or node is the fundamental unit of which graphs are formed: an undirected graph consists of a set of vertices and a set of edges (unordered pairs of vertices), while a directed graph consists of a set of vertices and a set of arcs (ordered pairs of vertices).
07 October 2016 / Getting_Started / Maven / Java / Sonatype / Howto
This post is part of a multipart series about creating a graph off all available Maven dependencies. Resolving maven dependencies is something we in general leave to our dependency management system, Maven, Ivvy, …. For the purpose to the application we are developing we required a detailed control on how the the dependencies are resolved and the JSon representation of this sub-graph. I start off with a short intro on where to find documentation on the Maven resolving mechanism and then go into the details for each of the parts that are required to do so.
07 October 2016 / Maven / Java / Howto / Github / neo4j
This post is part of a multipart series about creating a graph off all available Maven dependencies. This article describes the drivers behind and the implementation of the Unmanaged Neo4j Extension written for our Maven graph analysis. When a the processing cluster is sending the sub graphs that need to be merged into a single database locking issues will occur. We opted to use a queuing mechanism to prevent. From the choices we had to implement this as a component for the Neo4J server we choose to this as a unmanaged extension.