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The InitializableModel interface has only one, parameterless method: void afterCreated(). Here's an example use:

@SliceResource
public class ExampleModel implements InitializableModel {
    
    private final static Logger LOG = LoggerFactory.getLogger(ExampleModel.class);
	
    @JcrProperty
    private String text;
    
    @Override
    public void afterCreated() {
        if (text == null) {
		    LOG.warn("There is no text property in the resource");
	    }
	}
}

@PreMapping and @PostMapping annotations

Having a model annotated with @SliceResource you can annotate method with @PreMapping or @PostMapping annotation. Such method will be called before or after mapping is done respectively.

@SliceResource
public class MyComponentModel {

  @JcrProperty
  private String property;

  @Inject
  private ModelProvider modelProvider;

  @PreMapping
  public void preMapping() {
    // modelProvider is already set; property is not set
  }

  @PostMapping
  public void postMapping() {
    // modelProvider and property are already set
  }
}

How to extend mapper?

Writing your own processor

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