Standard language syntax to generate DDD objects in php
An aggregate is responsible of dispatching changes to its encapsulated entities. He has the responsibility of dispatching events when a change occurs. The aggregates are the objects fetched by repositories with which command handlers work to trigger a change.
// MyAggregate.wrap
aggregate MyAggregate
{
}
will generate
final class MyAggregate
{
// ...
}By default, the system will generate all __construct() as private, and provide a fromEmpty() static method.
An entity is encapsulated in an Aggregate, and should not be know to the outside world. As the aggregate, its state might change through its lifecycle. The aggregate is responsible of calling the entities methods.
A value object can never be changed once created. He keep his invariant and allow state change, but always return a new immutable value object when changing of state. Used by Entities and Aggregate.