IModelReference (CMS API 15.5.0 API)

Type Parameters:

T - the type of the object for the model

All Superinterfaces:

org.apache.wicket.util.io.IClusterable, org.apache.wicket.model.IDetachable, IObservable, Serializable

All Known Implementing Classes:

ModelReference
```
public interface IModelReference<T>
extends org.apache.wicket.model.IDetachable, IObservable
```
Service interface for sharing models. When a model is shared between plugins and it is subject to change, it should be wrapped in an IModelReference service. The service is usually available under the configuration key 'wicket.model'.
This service is observable as well, so it is possible to receive model change events by registering an IObserver with the service as the observable. An IModelReference.IModelChangeEvent should be sent whenever setModel(org.apache.wicket.model.IModel<T>) is invoked.
The default implementation ModelReference, takes care of sending the events.
Model services should be registered before any of the plugins that uses them is started. This makes it easier to create plugins that consume models (they don't need to register service trackers). Since generally a model is injected into a new plugin cluster, this is usually quite a natural thing to do.

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static interface IModelReference.IModelChangeEvent<T>
Event that's sent to IObservers of the service.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`org.apache.wicket.model.IModel<T>`	`getModel()`	Retrieve the current model of the model service
`void`	`setModel(org.apache.wicket.model.IModel<T> model)`	Update the model of the service.

Methods inherited from interface org.apache.wicket.model.IDetachable
detach

Methods inherited from interface org.hippoecm.frontend.model.event.IObservable
equals, hashCode, setObservationContext, startObservation, stopObservation

- Method Detail
  - getModel
```
org.apache.wicket.model.IModel<T> getModel()
```
    Retrieve the current model of the model service
    
    Returns:
    
    the model
  - setModel
```
void setModel(org.apache.wicket.model.IModel<T> model)
```
    Update the model of the service. Observers will be notified with an IModelReference.IModelChangeEvent.
    
    Parameters:
    
    model - the new model