vitormcruz / sandbox

Sandbox used to experimental stuff

Sandbox

Project in which I experiment various technologies and techniques.

##What do this project currently has:

####Maven

I will eventually create a build based on Graddle while maintaining maven working so that I can compare them.

####Spring Boot with spring-boot-starter-web (using spring parent)

####Vaadin + Spring MVC

_Using Spark now. See _

####Validation using an uniform notification pattern

Moved to

####Implementation of Payroll

Moved to

####Validation based on JUnit

Gave up to a different approach, see Validation using an uniform notification pattern section.

####Magritte for JVM

Very promising, but I gave up for lack of time. I maintained, however, a branch with the partial implementation

Magritte is a meta-description framework that keeps full power to the programmer since the description is made with pure OO. A description alone is useless, but it can be used to any purpose, most notably to generate dynamic stuff, since the description of objects can be obtained anytime at runtime. In Smalltalk it is commonly used to generate web forms in the Seaside Framework. The JVM implementation is more or less like the one in Smalltalk, and I aim to use it to generate not only web forms, but validation and tests also.

For example suppose a class Employee with a name and age, a description of this class could be:

   @DescriptionDefinition
   def myDescritpion(){
     ["name".isAString().beRequired(),
     "age".isAnInteger().minSize(18).beRequired()]
   }

With this description I can generate, dynamically:

• A web form that validates the required fields and that the age is an Integer => 18;
• Validations on the server side;
• An object mother builder class that builds valid Employee classes;
• An entire web API;
• The sky is the limit....

I intent to do the following:

1. Vaadin UI generation based on Magritte
2. Test generation based on Magritte
3. Validation generation based on Magritte