Invisible to the eye

I have set out, almost unconsciously, to use constructor injection by default in the last few years while writing object-oriented applicatio...

A customer should be able to view its past orders, along with their dates and chosen products. This is necessary so that clients can view a ...

The post on php's foreach construct raised a discussion about the design of the language and of userland code, so I'm recollecting ...

Have you ever heard of Multitier architecture ? If not, you have probably encountered it without knowing its name while working on web appli...

Probably during your career you have heard the term impedance mismatch , which is commonly referred to the problems that arise in converting...

Saturday is becoming the 'questions day of week', since it is not the first time that after a week of work some readers email me t...

This morning I have tried for the first time to use Doctrine 2 in a Zend Framework application. I used the latest release, 2.0.0 alpha3 , ...

This blog has grown much during the last month and the newest readers may have missed some important articles in the posts archive, on one o...

A Repository is a Domain-Driven Design concept but it is also a standalone pattern. Repositories are an important part of the domain layer ...

Applying Domain-Driven Design and Patterns: With Examples in C# and .NET is a book from Jimmy Nilsson which shows you how to begin applying ...

An Orm is a complex and generic tool which stores objects such as Entities and Value Objects (Customer, Groups, Money classes) in a relatio...

Naked Objects pattern strips down the layering of your application to a single one: the Domain Model, and poses a lot of questions about how...

In the last weeks I started to contribute with code to the Doctrine project . Doctrine is an Orm and database abstraction layer for php: it...

What is a good domain model? The one that bridges together domain and infrastructure... According to Wikipedia , D...