org.apache.tapestry5.internal.services.assets
Interface ResourceChangeTracker

All Superinterfaces:

InvalidationEventHub, ResourceDependencies

All Known Implementing Classes:

ResourceChangeTrackerImpl

public interface ResourceChangeTracker
extends InvalidationEventHub, ResourceDependencies

Tracks resources (at least, resources that can change because they are on the file system) and acts as an UpdateListener to check for changes and notify its listeners.

Since:

5.3

Method Summary

long	trackResource(Resource resource) Start tracking the resource (or return the last modified time of an already tracked resource).

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

addInvalidationListener

Methods inherited from interface org.apache.tapestry5.services.assets.ResourceDependencies

addDependency

Method Detail

trackResource

long trackResource(Resource resource)

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.

Parameters:

resource - to track

Returns:

last modified time, to nearest second

See Also:

URLChangeTracker