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A 3 Step Guide to Getting Started with NoSQL


I have been looking in to NoSQL databases for few months and would like to share my experience with it. This is a post might help you if you indent to start learning about the NoSQL Databases. I would try to link the resources which I found useful here. Step 1: What is NoSQL? NoSQL DEFINITION: Next Generation Databases mostly ...

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Indexing data in Solr from disparate sources using Camel


Apache Solr is ‘the popular, blazing fast open source enterprise search platform’ built on top of Lucene. In order to do a search (and find results) there is the initial requirement of data ingestion usually from disparate sources like content management systems, relational databases, legacy systems, you name it… Then there is also the challenge of keeping the index up ...

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Introduction to Default Methods (Defender Methods) in Java 8


We all know that interfaces in Java contain only method declarations and no implementations and any non-abstract class implementing the interface had to provide the implementation. Lets look at an example:                 public interface SimpleInterface { public void doSomeWork(); } class SimpleInterfaceImpl implements SimpleInterface{ @Override public void doSomeWork() { System.out.println('Do Some Work implementation ...

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Bidirectional @OneToMany / @ManyToOne association


One of goals in programming is representing of models from real world. Very often an application need to model some relationship between entities. In the last article about Hibernate associations I have described rules of setting up the “one to one” relationship. Today I’m going to show you how to setup bidirectional “one to many” and “many to one” association. ...

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Bidirectional @OneToOne primary key association


It’s time to continue articles about Hibernate. The last one was dedicated to unidirectional @OneToOne association. So today I will show you how to obtain bidirectional @OneTonOne primary key association. An example from this tutorial based on previous article. Let’s get started. I will work with the same tables which I have created previously. In order to setup a bidirectional ...

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ARM Virtualization Extensions – Introduction (Part 1)


Sorry guys for another hiatus, my job at Calxeda keeps me busy. I was recently discussing ARM’s virtualization support with my friend Ali Hussain (yup, that’s our idea of a fun dinner conversation) and found some very interesting facts. I requested Ali to share his knowledge in a blog post series on this topic, so here you go. Ali is in ...

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Apache Camel meets Redis


The Lamborghini of Key-Value stores Camel is the best of bread Integration framework and in this post I’m going to show you how to make it even more powerful by leveraging another great project – Redis. Camel 2.11 is on its way to be released soon with lots of new features, bug fixes and components. Couple of these new components ...

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Java Collections API Quirks


So we tend to think we’ve seen it all, when it comes to the Java Collections API. We know our ways around Lists, Sets, Maps, Iterables, Iterators. We’re ready for Java 8?s Collections API enhancements. But then, every once in a while, we stumble upon one of these weird quirks that originate from the depths of the JDK and its ...

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Using Maven Jetty plugin


Although I am using Maven since a long time I never used the Jetty plugin until recently. To be able to test a REST client I created a servlet which showed me all incoming parameters and headers with the incoming request. To run the servlet in a container I decided to give the Maven Jetty plugin a go. So first ...

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