Lazy loading for dependencies

[mnapoli]

Given the simple example:

use DI\Annotations\Inject;

class Class1 {
    /**
     * @Inject
     * @var Class2
     */
    private $class2;
}

Private property $class2 will be injected when Class1 is instantiated, i.e. even if not used. This can impact the performances. Lazy loading could be an optimization.

One solution could be to inject proxy instances instead of the dependency. The proxy can catch method and property calls using __get, __set, __call... When used, the proxy can then load the dependency, and forward the call.

[mnapoli]

Implementation:

use DI\Annotations\Inject;

class Class1 {
    /**
     * @Inject(lazy=true)
     * @var Class2
     */
    private $class2;
}