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Working with MongoDB using Kundera

Kundera – a JPA 2.0 (Java Persistence API) based ORM library was originally developed for Cassandra database. A support for Hbase was later added to...

0 replies - 3061 views - 11/13/12 by Amresh Singh in Articles

Two Actors - Discovering Akka

 Hope you are having fun so far, but our application has serious performance defect. After measuring response times of the RandomOrgRandom class we...

0 replies - 1371 views - 11/11/12 by Tomasz Nurkiewicz in Articles

Testing Hadoop Programs with MRUnit

This post will take a slight detour from implementing the patterns found in Data-Intensive Processing with MapReduce to discuss something equally...

0 replies - 3333 views - 11/09/12 by Bill Bejeck in Articles

Request and Response - Discovering Akka

In the previous part we implemented our first actor and sent message to it. Unfortunately actor was incapable of returning any result of processing this...

0 replies - 2293 views - 11/08/12 by Tomasz Nurkiewicz in Articles

Deep Diving into Cloning

  Before we proceed with the cloning concept let’s refresh our basics with the object creation concept. When...

2 replies - 2030 views - 11/08/12 by Mainak Goswami in Articles

Working with Dependencies to Eliminate Unwanted Cycles

The Dependency Structure Matrix (DSM) is a very powerful and fancy tool to explore your project dependencies. In this article, based on chapter 7 of Sonar in...

0 replies - 3846 views - 11/08/12 by Patroklos Papapetrou in Articles

Polyglot Persistence: EclipseLink with MongoDB and Derby

Polyglot persistence has been in the news since some time now. Kicked off by the famous Fowler post from end 2011 I see more an more nice ideas coming up....

1 replies - 4650 views - 11/06/12 by Markus Eisele in Articles

Designing a Spacial Index

Note: This tutorial is by Nick Dimiduk and Amandeep Khurana, authors of HBase in Action Geographic Information Systems (GIS) is an interesting area of...

0 replies - 3988 views - 11/04/12 by Eric Gregory in Articles

A Solution to the Supernode Problem

  In graph theory and network science, a “supernode” is a vertex with a disproportionately high number of incident edges. While supernodes are rare in...

0 replies - 3422 views - 11/03/12 by Marko Rodriguez in Articles

How to Build an ExtJS 3.4 Scatter Chart with Logarithmic Axis

ProblemYou're rendering data that increases exponentially, and wish to display a chart with a log-scale axis.Exponential data:Logarithmic scale rendering of...

0 replies - 2971 views - 11/02/12 by Gary Sieling in Articles

Java EE: JSP 2.2 and Servlets 3.0 tutorial with Resin Servlet Container Part Two

Java EE Servlet tutorial : Adding create, update and delete to the bookstore listing.   This tutorial is part of Java EE Tutorial covering JSP_2.2, and...

0 replies - 3703 views - 11/01/12 by Bill Digman in Articles

Neo4j 1.9.M01 -- Self-Managed HA

Editor's Note: This post was originally written by Peter Neubauer at the Neo4j Blog. Welcome everyone to the first Milestone of the...

0 replies - 2539 views - 10/31/12 by Andreas Kollegger in Articles

ZK Gritter: Growl-like notifications for ZK apps

Introduction Jawwa ZK Gritter is an open source library that can be used to add Growl-like notifications to ZK apps. The library...

0 replies - 2949 views - 10/31/12 by Joonas Javanainen in Articles

Advanced ZK: Asynchronous UI Updates and Background Processing – Part 2

Introduction In part 1 I showed how server push and threads can be used to execute background tasks in a ZK application. However, the simple example had a...

0 replies - 2501 views - 10/30/12 by Joonas Javanainen in Articles

Want to Get Rid of Documents with Duplicate Content?

Whether you’re combining data from two different data sources, have multiple purchases from the same customer or just entered the same data in a web form...

0 replies - 3272 views - 10/30/12 by Baxter Denney in Articles