[TYPO3-ect] domainLayer for lib/div?

[Joerg Schoppet]

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I my last self developed framework I integrated a so called
"domainLayer". And I just want to ask, if it is interesting for lib/div?

A domain-object represents a real-life object like a user, article,
banana ...

Each domain-object provides methods to automatically retrieves and saves
itself to the database:

e.g.:

$user = tx_myext_domain_user::getByUid(10);
// creates an user-object of the user with the uid 10

$userArr = tx_myext_domain_user::getByField(array(array('username',
'LIKE', '%test$')));
// returns an array with user-objects, where the username contains 'test'

$userObj->save();
// automatically saves the record to the database

With the magic-method __call() it will also be possible to easily change
the return-values of individual members.

e.g.
$user->tstampGet();
// The method tstampGet() does not exists, so the magic-method __call()
is called. This method looks if the last three letters equals "Get" and
then looks if the member-var exists, if yes it simple returns the value.

$user->tstampGet('human');
// The method tstampGet() exists and look like the following:
	public function tstampGet($mode='') {
		switch ($mode) {
			case 'human':
				return date('d.m.Y', $this->tstampGet());
				break;
			default:
				return $this->tstamp;
		}
	}


With the help of the decorator-pattern, it can be possible to easily
extend this mechanism in the future e.g. include additional fields
and/or methods to a domain-object (LDAP-field mapping for user-object),
or implement a custom logging function each time a record is saved.

An additional step can be to also include the activeRecord-pattern, so
that datatype-conversion can be done automatically by the save-method
(e.g. tstamp is an integer).


What do you think?

Regards

Joerg
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