org.hippoecm.frontend.model.ocm

Class JcrObject

java.lang.Object

org.hippoecm.frontend.model.ocm.JcrObject

All Implemented Interfaces:

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

public abstract class JcrObject
extends Object
implements org.apache.wicket.model.IDetachable, IObservable

A base class for implementing object content mapping. It wraps a JcrNodeModel, and provides an observable on top of JCR. Subclasses can override the processEvents method to translate these events to object-type specific events.

All instances of a type that correspond to the same node are equivalent with respect to the hashCode and equals methods.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
JcrObject(org.apache.wicket.model.IModel<javax.jcr.Node> nodeModel)

Method Summary

Modifier and Type	Method and Description
void	detach()
boolean	equals(Object obj) Equivalence of observables; observation will only be started on one instance.
protected javax.jcr.Node	getNode()
protected JcrNodeModel	getNodeModel()
protected IObservationContext	getObservationContext()
protected Set<String>	getStringSet(String relPath)
int	hashCode()
protected abstract void	processEvents(IObservationContext context, Iterator<? extends IEvent> events) Process the JCR events.
void	save()
void	setObservationContext(IObservationContext<? extends IObservable> context) Before observation is started on the observable, an observation context is injected by the observer registry.
protected void	setStringSet(String relPath, Set<String> strings)
void	startObservation() When the first IObserver of this observable is registered with the observer registry, observation is started.
void	stopObservation() When the last IObserver unregisters, observation is stopped.

Methods inherited from class java.lang.Object

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

Constructor Detail

JcrObject

public JcrObject(org.apache.wicket.model.IModel<javax.jcr.Node> nodeModel)

Method Detail

getNode

protected javax.jcr.Node getNode()
                          throws javax.jcr.ItemNotFoundException

Throws:

javax.jcr.ItemNotFoundException

getNodeModel

protected JcrNodeModel getNodeModel()

getStringSet

protected Set<String> getStringSet(String relPath)

setStringSet

protected void setStringSet(String relPath,
                            Set<String> strings)

save

public void save()

detach

public void detach()

Specified by:

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

setObservationContext

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

Description copied from interface: IObservable

Before observation is started on the observable, an observation context is injected by the observer registry. This context can be used to notify listeners.

Specified by:

setObservationContext in interface IObservable

getObservationContext

protected IObservationContext getObservationContext()

processEvents

protected abstract void processEvents(IObservationContext context,
                                      Iterator<? extends IEvent> events)

Process the JCR events. Implementations should create higher-level events that are meaningful for the subtype. These must be broadcast to the observation context.

Parameters:

context - subtype specific observation context

events - received JCR events

startObservation

public void startObservation()

Description copied from interface: IObservable

When the first IObserver of this observable is registered with the observer registry, observation is started. Implementations must notify observers until observation is stopped.

An implementation should register listeners with external data sources, when appropriate. It is possible for an observable to register as an observer for another observable.

Specified by:

startObservation in interface IObservable

stopObservation

public void stopObservation()

Description copied from interface: IObservable

When the last IObserver unregisters, observation is stopped. Any listeners or observers registered by the observable must be unregistered by the implementation.

Specified by:

stopObservation in interface IObservable

hashCode

public int hashCode()

Specified by:

hashCode in interface IObservable

Overrides:

hashCode in class Object

See Also:

IObservable.equals(Object)

equals

public boolean equals(Object obj)

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