org.hippoecm.frontend.model

Class JcrQueryModel

java.lang.Object

org.apache.wicket.model.LoadableDetachableModel

org.hippoecm.frontend.model.JcrQueryModel

All Implemented Interfaces:

Serializable, org.apache.wicket.markup.repeater.data.IDataProvider, org.apache.wicket.model.IDetachable, org.apache.wicket.model.IModel, org.apache.wicket.util.io.IClusterable, IObservable

public class JcrQueryModel
extends org.apache.wicket.model.LoadableDetachableModel
implements org.apache.wicket.markup.repeater.data.IDataProvider, IObservable

Data provider that uses a JCR Query object to retrieve nodes.

Registering observers for this class is deprecated; plugins should register efficient listeners themselves. (since 'efficient' is dependent on the query being carried out, this cannot be done generically)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static int	UNKNOWN_SIZE

Constructor Summary

Constructors

Constructor and Description
JcrQueryModel(String statement, String language) Create a model for a JCR query.

Method Summary

Modifier and Type	Method and Description
Iterator<javax.jcr.Node>	iterator(long first, long count)
protected Object	load()
org.apache.wicket.model.IModel<javax.jcr.Node>	model(Object object)
void	setObservationContext(IObservationContext context) Before observation is started on the observable, an observation context is injected by the observer registry.
long	size()
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 org.apache.wicket.model.LoadableDetachableModel

detach, getObject, isAttached, onAttach, onDetach, setObject, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

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

detach

Methods inherited from interface org.hippoecm.frontend.model.event.IObservable

equals, hashCode

Field Detail

UNKNOWN_SIZE

public static final int UNKNOWN_SIZE

See Also:

Constant Field Values

Constructor Detail

JcrQueryModel

public JcrQueryModel(String statement,
                     String language)

Create a model for a JCR query.

Parameters:

statement - the statement to execute

language - the language of the statement

Method Detail

load

protected Object load()

Specified by:

load in class org.apache.wicket.model.LoadableDetachableModel

iterator

public Iterator<javax.jcr.Node> iterator(long first,
                                         long count)

Specified by:

iterator in interface org.apache.wicket.markup.repeater.data.IDataProvider

model

public org.apache.wicket.model.IModel<javax.jcr.Node> model(Object object)

Specified by:

model in interface org.apache.wicket.markup.repeater.data.IDataProvider

size

public long size()

Specified by:

size in interface org.apache.wicket.markup.repeater.data.IDataProvider

setObservationContext

public void setObservationContext(IObservationContext 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

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