Christos Tranoris

The purpose of these series Tutorial (updated with eclipse Indigo) is to introduce tools needed, setup and initial guidelines for Service Oriented Applications. Since there are many tutorials out there, this text will provide urls that point to each step and fill any gap between them. Web Services, Service Orchestration, Enterprise Service Buses and Business Rules Engine will be explored during these tutorials.

(Please check also the NEW update Tutorial with Eclipse Indigo here) The purpose of these series Tutorial (updated with eclipse Helios) is to introduce tools needed, setup and initial guidelines for Service Oriented Applications.

Here is a sample code for creating an AMI from java code, using the Amazon's EC2 aws-java-sdk. I didn't manage to find a good "hello world" example for java, so I post my attempt here. I hope that you can kick-start working on the cloud.
First, you create an instance of the wrapper. Then, you can use it for example like:  createAMInstances(amiId, 1, 3, "mykey", "m1.small", "us-east-1a");
 

In this short post, I would like to show you how easy it is to integrate persistent objects with Xtext (my favorite toy the last few months). For this experiment I used Eclipse Helios milestone build (and relevant updates of emf, teneo, hibernate) and xtext build 0.8.0M3. I also have used mySQL for the storage.
 

Orchestration and choreography in computing, are architecture frameworks which coordinate messaging/data exchange and define workflow between services and their consumers. In a nutshell, if you have a bunch of web services, you define a workflow (with orchestration) where services will follow in order to accomplish a certain requirement. These concepts are major contribution to reusability in service oriented software.
 

(Please check also the update Tutorial with Helios here)
The purpose of these series Tutorial (updated with eclipse galileo) is to introduce tools needed, setup and initial guidelines for Service Oriented Applications.

Maybe sometimes you wonder if your unit tests during your TDD cover all your code. Well, in perl there is a module called Devel::Coverage which does what you expect. If it is not installed yet in your system just install it by typing (e.g. in your Linux box):

#sudo apt-get install libdevel-cover-per
#sudo apt-get install libpod-coverage-perl

Create a small perl program, like the following one: