org.apache.tapestry5.internal.services
Class ResourceCacheImpl

java.lang.Object
  org.apache.tapestry5.internal.event.InvalidationEventHubImpl
      org.apache.tapestry5.internal.services.ResourceCacheImpl

All Implemented Interfaces:

ResourceCache, InvalidationEventHub, UpdateListener

public class ResourceCacheImpl
extends InvalidationEventHubImpl
implements ResourceCache, UpdateListener

Constructor Summary

ResourceCacheImpl(ResourceDigestGenerator digestGenerator, ClasspathURLConverter classpathURLConverter)

Method Summary

void	checkForUpdates() Invoked to force the receiver to check for updates to whatever underlying resources it makes use of.
String	getDigest(Resource resource) Returns the digest for the given path.
StreamableResource	getStreamableResource(Resource resource) Returns the contents of the resource
long	getTimeModified(Resource resource) Returns the time modified for the resource.
boolean	requiresDigest(Resource resource) Returns true if the path requires that the client URL for the resource include a digest to validate that the client is authorized to access the resource.

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

addInvalidationListener, 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

addInvalidationListener

Constructor Detail

ResourceCacheImpl

public ResourceCacheImpl(ResourceDigestGenerator digestGenerator,
                         ClasspathURLConverter classpathURLConverter)

Method Detail

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

getDigest

public String getDigest(Resource resource)

Description copied from interface: ResourceCache

Returns the digest for the given path.

Specified by:

getDigest in interface ResourceCache

Returns:

the digest, or null if the resource does not exist

getTimeModified

public long getTimeModified(Resource resource)

Description copied from interface: ResourceCache

Returns the time modified for the resource.

Specified by:

getTimeModified in interface ResourceCache

Returns:

the date time modified for the path, or a negative value if the resource does not exist

requiresDigest

public boolean requiresDigest(Resource resource)

Description copied from interface: ResourceCache

Returns true if the path requires that the client URL for the resource include a digest to validate that the client is authorized to access the resource.

Specified by:

requiresDigest in interface ResourceCache

Returns:

true if digest is required for the resource

See Also:

ResourceDigestGenerator.requiresDigest(String)

getStreamableResource

public StreamableResource getStreamableResource(Resource resource)

Description copied from interface: ResourceCache

Returns the contents of the resource

Specified by:

getStreamableResource in interface ResourceCache

Returns:

access to compressed and uncompressed streams