Package org.apache.sling.discovery.commons.providers.spi.base

Class IdMapService

java.lang.Object

org.apache.sling.discovery.commons.providers.spi.base.AbstractServiceWithBackgroundCheck

org.apache.sling.discovery.commons.providers.spi.base.IdMapService

All Implemented Interfaces:

ResourceChangeListener

public class IdMapService
extends AbstractServiceWithBackgroundCheck
implements ResourceChangeListener

The IdMapService is responsible for storing a slingId-clusterNodeId pair to the repository and given all other instances in the cluster do the same can map clusterNodeIds to slingIds (or vice-versa)

Field Summary

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

CHANGE_ADDED, CHANGE_CHANGED, CHANGE_PROVIDER_ADDED, CHANGE_PROVIDER_REMOVED, CHANGE_REMOVED, CHANGES, PATHS, PROPERTY_NAMES_HINT

Constructor Summary

Constructors

Constructor	Description
IdMapService()

Method Summary

Modifier and Type	Method	Description
void	clearCache()
long	getMyId()
boolean	isInitialized()
void	onChange(java.util.List<ResourceChange> changes)	Report resource changes based on the filter properties of this listener.
static IdMapService	testConstructor(DiscoveryLiteConfig commonsConfig, SlingSettingsService settingsService, ResourceResolverFactory resourceResolverFactory)	test-only constructor
java.lang.String	toSlingId(int clusterNodeId, ResourceResolver resourceResolver)
boolean	waitForInit(long timeout)	for testing only

Methods inherited from class java.lang.Object

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

Constructor Detail

IdMapService

public IdMapService()

Method Detail

testConstructor

public static IdMapService testConstructor(DiscoveryLiteConfig commonsConfig,
                                           SlingSettingsService settingsService,
                                           ResourceResolverFactory resourceResolverFactory)

test-only constructor

getMyId

public long getMyId()

waitForInit

public boolean waitForInit(long timeout)

for testing only

isInitialized

public boolean isInitialized()

clearCache

public void clearCache()

toSlingId

public java.lang.String toSlingId(int clusterNodeId,
                                  ResourceResolver resourceResolver)
                           throws PersistenceException

Throws:

PersistenceException

onChange

public void onChange(java.util.List<ResourceChange> changes)

Description copied from interface: ResourceChangeListener

Report resource changes based on the filter properties of this listener.

Note that resource changes for paths which are ancestors of the paths this listener was registered to may be reported through this method. This is due to limitations of certain resource providers to provide events on a more granular level (e.g. for deletion or movement of resources containing (potentially nested) child resources).

Starting with version 1.2 of this API, an instance of ResoureChangeList is passed as the parameter to allow passing additional information.

Specified by:

onChange in interface ResourceChangeListener

Parameters:

changes - The changes list. This list is immutable.