Refactoring towards the ubiquitous language

@JefClaes – jefclaes.be

What language?

When a customer moves, we want to send him an email.

UPDATE tbl_customerSET street = … WHERE id = …

It’s us, not them

We have forgotten how to talk

• Database

• Framework

• ORM

• Tools

• Code generation

• UI technology

• ...

= =

The ubiquitous language

Better understanding

of ‘the business’

Faster and less error-prone communication

Less documentation!

Code can be understood

by everyone

Example

Our business has customers. A customer must have a customer number, an address and an

email address. A customer can move to a new address. When a customer moves, we want to

send them an email.

Can we tell this story in code?

Before

After

Before

Before

After

After

After

Work the language,

make the implicit explicit

Disclaimer

CRUD can be fine too.

Learn where the value is in your system.