com.adobe.acs.commons.httpcache.invalidator.event

Class JCRNodeChangeEventHandler

java.lang.Object

com.adobe.acs.commons.httpcache.invalidator.event.JCRNodeChangeEventHandler

All Implemented Interfaces:

org.apache.sling.api.resource.observation.ExternalResourceChangeListener, org.apache.sling.api.resource.observation.ResourceChangeListener, org.osgi.service.event.EventHandler

@Property(label="JCR paths to watch for changes. (legacy)",description="Paths expressed in LDAP syntax. Example: (|(path=/content*)(path=/etc*)) - Watches for changes under /content or /etc. This is deprecated - consider using resource.paths instead for better performance.",name="event.filter") @Property(label="JCR paths to watch for changes.",value={"/content","/etc"},description="List of paths to watch. Entries with the \'glob:\' prefix are interpreted as globs, i.e. the * and ** wildcards are supported.",name="resource.paths") @Property(label="Type of change to listen to",value={"ADDED","REMOVED","CHANGED"},name="resource.change.types") @Property(name="webconsole.configurationFactory.nameHint",value="JCR paths to watch for changes: {event.filter} {resource.paths}",propertyPrivate=true)
public class JCRNodeChangeEventHandler
extends Object
implements org.osgi.service.event.EventHandler, org.apache.sling.api.resource.observation.ResourceChangeListener, org.apache.sling.api.resource.observation.ExternalResourceChangeListener

Sample http cache invalidation job creator. Creates invalidation job when there is a change in JCR repository. Cache invalidation events could be sling event handlers, sling filter to trap replication events, workflow steps, etc. Invalidation event creates and starts Invalidation jobs.

This is modeled as a sling observer which listens to any change in paths (by default) -- /content, /etc and creates an invalidation job. The intention of this invalidation job is that whenever there is any change in the above said paths, the configured cache needs to be invalidated.

Field Summary

Fields inherited from interface org.apache.sling.api.resource.observation.ResourceChangeListener

CHANGES, PATHS, PROPERTY_NAMES_HINT

Constructor Summary

Constructors

Constructor and Description
JCRNodeChangeEventHandler()

Method Summary

Modifier and Type	Method and Description
protected void	activate(org.osgi.framework.BundleContext context, Map<String,Object> config)
protected void	deactivate()
void	handleEvent(org.osgi.service.event.Event event)
void	onChange(List<org.apache.sling.api.resource.observation.ResourceChange> changes)

Methods inherited from class java.lang.Object

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

Constructor Detail

JCRNodeChangeEventHandler

public JCRNodeChangeEventHandler()

Method Detail

activate

@Activate
protected void activate(org.osgi.framework.BundleContext context,
                                  Map<String,Object> config)

deactivate

@Deactivate
protected void deactivate()

handleEvent

public void handleEvent(org.osgi.service.event.Event event)

Specified by:

handleEvent in interface org.osgi.service.event.EventHandler

onChange

public void onChange(List<org.apache.sling.api.resource.observation.ResourceChange> changes)

Specified by:

onChange in interface org.apache.sling.api.resource.observation.ResourceChangeListener