Aem

Once I needed to write several debugging servlets for some functionality. Those servlets had to accept a big pile of parameters and I was tired of having tens of rows like String paramValue = request.getParameter(“paramName”). Luckily, I’ve already known Sling Models. So I’ve decided to find the way to inject these parameters into the model, so I could write just request.adaptTo(MyModel.class) . Unfortunately, I found nothing, so decided to write it myself. So in this article, I will show you how to write custom Sling Model injector on the example of Sling Model Request Parameter Injector. ...

At some point, Hexagonal architecture has been introduced to me. It espouses a one-way flow of dependencies - from the outside, in. And this is a great way to increase maintainability. However, we still need to access request and other external resources in our Sling Models. That is where @Self annotation can be used. @Self Annotation According to the documentation, this annotation injects the adaptable object itself. If the @Self annotation is present it is tried to adapt the adaptable to the field type. ...