org.apache.tapestry5.internal.services.assets

Class ResourceChangeTrackerImpl

java.lang.Object

org.apache.tapestry5.internal.event.InvalidationEventHubImpl

org.apache.tapestry5.internal.services.assets.ResourceChangeTrackerImpl

All Implemented Interfaces:

ResourceChangeTracker, ResourceDependencies, InvalidationEventHub, UpdateListener

public class ResourceChangeTrackerImpl
extends InvalidationEventHubImpl
implements ResourceChangeTracker, UpdateListener

Constructor Summary

Constructors

Constructor and Description
ResourceChangeTrackerImpl(ClasspathURLConverter classpathURLConverter, boolean productionMode)

Method Summary

Modifier and Type	Method and Description
void	addDependency(Resource dependency) Marks the dependency as an additional resource.
void	checkForUpdates() Invoked to force the receiver to check for updates to whatever underlying resources it makes use of.
void	forceInvalidationEvent() Forces an invalidation event.
void	registerWithUpdateListenerHub(UpdateListenerHub hub)
long	trackResource(Resource resource) Start tracking the resource (or return the last modified time of an already tracked resource).

Methods inherited from class org.apache.tapestry5.internal.event.InvalidationEventHubImpl

addInvalidationCallback, addInvalidationListener, clearOnInvalidation, fireInvalidationEvent

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.tapestry5.services.InvalidationEventHub

addInvalidationCallback, addInvalidationListener, clearOnInvalidation

Constructor Detail

ResourceChangeTrackerImpl

public ResourceChangeTrackerImpl(ClasspathURLConverter classpathURLConverter,
                                 @Symbol(value="tapestry.production-mode")
                                 boolean productionMode)

Method Detail

registerWithUpdateListenerHub

@PostInjection
public void registerWithUpdateListenerHub(UpdateListenerHub hub)

trackResource

public long trackResource(Resource resource)

Description copied from interface: ResourceChangeTracker

Start tracking the resource (or return the last modified time of an already tracked resource). Only file system resources are tracked. Resources are tracked until any resource changes, at which points listeners are notified and the internal state is cleared.

Specified by:

trackResource in interface ResourceChangeTracker

Parameters:

resource - to track

Returns:

last modified time, to nearest second

See Also:

URLChangeTracker

addDependency

public void addDependency(Resource dependency)

Description copied from interface: ResourceDependencies

Marks the dependency as an additional resource. A change to the dependency is considered the same as a change to the resource being transformed.

Specified by:

addDependency in interface ResourceDependencies

forceInvalidationEvent

public void forceInvalidationEvent()

Description copied from interface: ResourceChangeTracker

Forces an invalidation event. This is required in a rare case, to clear out a StreamableResource generated from the component message catalog; there are some walls in place that prevent the message catalog's underlying Resources from being exposed.

Specified by:

forceInvalidationEvent in interface ResourceChangeTracker

See Also:

MessageCatalogResource

checkForUpdates

public void checkForUpdates()

Description copied from interface: UpdateListener

Invoked to force the receiver to check for updates to whatever underlying resources it makes use of.

Specified by:

checkForUpdates in interface UpdateListener