This refactoring is the inverse of Change Unidirectional Association to Bidirectional. We start from a bidirectional association, where two objects reference...
0 replies - 4268 views - 09/05/11 by Giorgio Sironi in Articles
Object graphs are built by maintaining references to other objects inside an object's fields (usually private). These associations are persisted and stored by...
0 replies - 4469 views - 08/31/11 by Giorgio Sironi in Articles
This refactoring is a specialization of Replace Data Value with Object: its goal is to replace a scalar or primitive structure (in this case, an ever-present...
0 replies - 5605 views - 08/24/11 by Giorgio Sironi in Articles
Calisthenics is a Greek-derived term for exercises, in the gym sense. I have object calisthenics, exercises for object-oriented programming, around for a long...
3 replies - 6032 views - 08/18/11 by Giorgio Sironi in Articles
Classes derived from data have often multiple copies of equal objects lying around: there is no functional difference between them. Examples of these classes...
0 replies - 4421 views - 08/17/11 by Giorgio Sironi in Articles
We are entering the data organization refactorings section of Fowler's book: these methods apply to object which maintain state, like entities, records, value...
0 replies - 3950 views - 08/10/11 by Giorgio Sironi in Articles
Following in Fowler's steps, we start a section of refactorings that involve moving features and code between classes and objects. While the changes we have...
0 replies - 4818 views - 07/12/11 by Giorgio Sironi in Articles
If you have written a bit of JavaScript, you certainly have heard the word prototype. Prototype is not only a JavaScript library, but also a key concept of...
0 replies - 5604 views - 05/03/11 by Giorgio Sironi in Articles
A System Metaphor is what eXtreme Programming use to describe an architecture: for example you can think of particular application as production lines, or...
7 replies - 15247 views - 04/27/11 by Giorgio Sironi in Articles
The SOLID principles are a set of guidelines that drives good object-oriented design. They were defined from different people along the years, like Bertrand...
0 replies - 6039 views - 03/01/11 by Giorgio Sironi in Articles
In the last days, the article Why PHP is better than Ruby has got very popular on DZone. Unfortunately, the majority of popular articles are very...
5 replies - 6932 views - 02/24/11 by Giorgio Sironi in Articles
Object-oriented languages, like C++, Java and PHP, implement what is called single dispatch: when you have an object in a variable and you call a method on...
0 replies - 7119 views - 12/07/10 by Giorgio Sironi in Articles
0 replies - 1651 views - 11/16/10 by Snippets Manager in Uncategorized
Once I heard Alberto Brandolini giving a keynote at an Italian conference, saying, between other insights, that Lego bricks where one of the most abused...
34 replies - 17317 views - 09/30/10 by Giorgio Sironi in Articles
As a software developer, it's common to learn new practices every day. Although there are jokes about how the more a programmer ages, the more his lines of...
4 replies - 21352 views - 05/04/10 by Giorgio Sironi in Articles
