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Community
Know how persist document in the Cassandra in a way fairly simple
Scala interoperability with Java is not trivial. One of these none trivial cases is when a trait codes in Scala is been used from code written in java. When the trait contains abstract methods only then it is clear that the trait is mapped with an interface. The question is what happens when a trait contains abstract methods as well as implemented ones.
Education
This article has the main objective show a little example for persist information in Cassandra using java.
For demonstrated the persistence with Cassandra will used the Easy-Cassandra, a framework open source for use this SGBG in an easy mode.
@ColumnFamilyValue(nome = "person")//
public class Person implements...
Databases
Yesterday Liquid Robotics announced its Pacific Crossing (PacX) Challenge. Four Wave Glider robots with oceanographic sensors will launch from California attempting to travel the longest distance at sea ever completed by an unmanned marine vehicle. Best science from the collected oceanographic data wins the Challenge.
A simple demo of the Spring and mybatis integration
Finally iAnywhere answered my prayers and implemented support for JDBC batch mode into their latest (and fastest) driver. But at surprisingly bad performance. Let's see why.
Accessibility
The www.abelski.com web site offers free (for personal and academic usage) courses about various topics in software development. The site focuses on Java technologies.
Mobility
Today I read that Apple finally allows interpreted code on the iPhone. When will Oracle deliver Java for iOS?
In front of hundreds of guests from the economy sector, the political sector as well as the Information and Communications sector (ITK) the 'Initiative for Small and Medium Sized Businesses' awarded the Innovation Prize IT 2010 during the NORD/LB forum at the CeBit for the best IT innovations of the year. Micromata came third in the Open Source category with its Java API for KML - JAK.
The...
Programming
Iterating over an Enumeration with the for-each statement would be fine, but the JRE's default support is not very smart. So I wrote my own utility providing five times better speed, using virtually no heap space.
My previous blog, presenting the Life program, was quite long, still not really complete. I've continued the work, but soon found some interesting surprises. This new blog starts investigating an API bug, then trips into some surprising language behavior, and ends in a proposal for a small change in the JavaFX Script language.
Several APIs demand that the user is implementing the .hashCode() method. There are lots of standard implementations on the web, so the question is, what performance impact the implemenation of .hashCode() will have. I did some tests...
Research
Last week I gave a brief explanation of Web 3.0 and The Semantic Web to students at the college I attended more than ten years back. Possibly you are interested in the way Terminator and The Matrix will become real, then you should read on.
Lately I am working in a new pet project, quite interesting and perhaps you also have nice ideas on how to improve it.
JSR
There is much discussion these days about HATEOAS (Hypermedia as the engine of application state) so it gets time to clearly say what HATEOAS actually means.
