Package org.hippoecm.frontend.model

Class JcrNodeModel

java.lang.Object

org.hippoecm.frontend.model.ItemModelWrapper<Node>

org.hippoecm.frontend.model.JcrNodeModel

All Implemented Interfaces:

Serializable, org.apache.wicket.model.IDetachable, org.apache.wicket.model.IModel<Node>, org.apache.wicket.util.io.IClusterable, IObservable

public class JcrNodeModel
extends ItemModelWrapper<Node>
implements IObservable

The model for a JCR Node. It maintains a reference to a (possibly null) Node object. In addition, it is IObservable, broadcasting JCR Events for property changes and child node additions or removals.

In general, no guarantees are made on the existence of the Node. I.e. the referenced node may disappear or it may even never have existed.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
JcrNodeModel(String path)	Create a JcrNodeModel based on an absolute JCR path.
JcrNodeModel(Node node)	Create a JcrNodeModel based on a JCR Node.
JcrNodeModel(JcrItemModel model)	Create a JcrNodeModel based on an JcrItemModel.

Method Summary

Modifier and Type	Method	Description
void	detach()
boolean	equals(Object object)	Equivalence of observables; observation will only be started on one instance.
Node	getNode()	Retrieve the node from the repository.
Node	getObject()
JcrNodeModel	getParentModel()	Retrieve a JcrNodeModel for the parent node.
int	hashCode()
void	setObservationContext(IObservationContext<? extends IObservable> context)	Store the observation context to be used to dispatch events.
void	startObservation()	Start the observation by listening to JCR Events.
void	stopObservation()	Stop listening to JCR Events.
String	toString()

Methods inherited from class org.hippoecm.frontend.model.ItemModelWrapper

getItemModel, setItemModel, setObject

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.wicket.model.IModel

combineWith, filter, flatMap, isPresent, map, orElse, orElseGet

Constructor Detail

JcrNodeModel

public JcrNodeModel(JcrItemModel model)

Create a JcrNodeModel based on an JcrItemModel. The JcrItemModel should provide access to the Node to be wrapped by this model.

Parameters:

model - the Item model

JcrNodeModel

public JcrNodeModel(Node node)

Create a JcrNodeModel based on a JCR Node.

Parameters:

node - the node to wrap

JcrNodeModel

public JcrNodeModel(String path)

Create a JcrNodeModel based on an absolute JCR path.

Parameters:

path - the JCR path to the Node.

Method Detail

getNode

public Node getNode()

Retrieve the node from the repository. May return null when the node no longer exists or the model was initially created with a null object.

getObject

public Node getObject()

Specified by:

getObject in interface org.apache.wicket.model.IModel<Node>

Overrides:

getObject in class ItemModelWrapper<Node>

getParentModel

public JcrNodeModel getParentModel()

Retrieve a JcrNodeModel for the parent node.

Returns:

a model for the parent Node

detach

public void detach()

Specified by:

detach in interface org.apache.wicket.model.IDetachable

Specified by:

detach in interface org.apache.wicket.model.IModel<Node>

Overrides:

detach in class ItemModelWrapper<Node>

setObservationContext

public void setObservationContext(IObservationContext<? extends IObservable> context)

Store the observation context to be used to dispatch events.

Specified by:

setObservationContext in interface IObservable

startObservation

public void startObservation()

Start the observation by listening to JCR Events.

Specified by:

startObservation in interface IObservable

stopObservation

public void stopObservation()

Stop listening to JCR Events.

Specified by:

stopObservation in interface IObservable

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object object)

Description copied from interface: IObservable

Equivalence of observables; observation will only be started on one instance.

Specified by:

equals in interface IObservable

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface IObservable

Overrides:

hashCode in class Object

See Also:

IObservable.equals(Object)