Package org.ehcache.spi.persistence

Interface PersistableResourceService

All Superinterfaces:

MaintainableService, Service

public interface PersistableResourceService
extends MaintainableService

Interface for Services that handle a ResourceType which is persistable.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	PersistableResourceService.PersistenceSpaceIdentifier<T extends PersistableResourceService>	An identifier for an existing persistable resource.

Nested classes/interfaces inherited from interface org.ehcache.spi.service.MaintainableService

MaintainableService.MaintenanceScope

Method Summary

Modifier and Type	Method	Description
void	destroy(String name)	Destroys the persistence space with the given name.
void	destroyAll()	Destroys all persistence spaces.
PersistableResourceService.PersistenceSpaceIdentifier<?>	getPersistenceSpaceIdentifier(String name, ResourcePool resource)	Returns a PersistableResourceService.PersistenceSpaceIdentifier for the space associated to the provided arguments.
PersistableResourceService.PersistenceSpaceIdentifier<?>	getSharedPersistenceSpaceIdentifier(ResourcePool resource)	Returns a PersistableResourceService.PersistenceSpaceIdentifier for a space shared across all caches.
StateRepository	getStateRepositoryWithin(PersistableResourceService.PersistenceSpaceIdentifier<?> identifier, String name)	Returns a named state repository in the context of the given identifier.
boolean	handlesResourceType(ResourceType<?> resourceType)	Returns true if this service handles the given resource type.
void	releasePersistenceSpaceIdentifier(PersistableResourceService.PersistenceSpaceIdentifier<?> identifier)	Releases a previously obtained PersistableResourceService.PersistenceSpaceIdentifier.

Methods inherited from interface org.ehcache.spi.service.MaintainableService

startForMaintenance

Methods inherited from interface org.ehcache.spi.service.Service

start, stop

Method Details

handlesResourceType

boolean handlesResourceType(ResourceType<?> resourceType)

Returns true if this service handles the given resource type.

Parameters:

resourceType - the resource type to check

Returns:

true if this service handles the resource type

getPersistenceSpaceIdentifier

PersistableResourceService.PersistenceSpaceIdentifier<?> getPersistenceSpaceIdentifier(String name,
 ResourcePool resource)
                                                                                throws CachePersistenceException

Returns a PersistableResourceService.PersistenceSpaceIdentifier for the space associated to the provided arguments.

This method may create a new persistence space or load one. The returned identifier is the only way to interact with the persistence space.

Parameters:

name - the name of the persistence context

resource - the associated persistable resource pool

Returns:

an identifier for the persistence space

Throws:

CachePersistenceException - if the persistence space cannot be created

See Also:

• getStateRepositoryWithin(PersistenceSpaceIdentifier, String)

getSharedPersistenceSpaceIdentifier

PersistableResourceService.PersistenceSpaceIdentifier<?> getSharedPersistenceSpaceIdentifier(ResourcePool resource)
                                                                                      throws CachePersistenceException

Returns a PersistableResourceService.PersistenceSpaceIdentifier for a space shared across all caches.

This method may create a new persistence space or load one. The returned identifier is the only way to interact with the persistence space.

Parameters:

resource - the associated shared persistable resource pool

Returns:

an identifier for the shared resources persistence space

Throws:

CachePersistenceException - if the persistence space cannot be created

releasePersistenceSpaceIdentifier

void releasePersistenceSpaceIdentifier(PersistableResourceService.PersistenceSpaceIdentifier<?> identifier)
                                throws CachePersistenceException

Releases a previously obtained PersistableResourceService.PersistenceSpaceIdentifier.

This indicates to the persistence space that resource linked to the given identifier are no longer needed and thus enables cleaning up any transient state left.

Parameters:

identifier - the PersistenceSpaceIdentifier to release

Throws:

CachePersistenceException - If the identifier is not known

getStateRepositoryWithin

StateRepository getStateRepositoryWithin(PersistableResourceService.PersistenceSpaceIdentifier<?> identifier,
 String name)
                                  throws CachePersistenceException

Returns a named state repository in the context of the given identifier.

If the StateRepository already existed, this method returns it in a fully available state.

Parameters:

identifier - the space identifier

name - the state repository name

Returns:

a StateRepository

Throws:

CachePersistenceException - if the StateRepository cannot be created or recovered.

destroy

void destroy(String name)
      throws CachePersistenceException

Destroys the persistence space with the given name.

This method can be called without having created the persistence space from this JVM.

Parameters:

name - persistence context name

Throws:

CachePersistenceException - if the persistence space cannot be destroyed

destroyAll

void destroyAll()
         throws CachePersistenceException

Destroys all persistence spaces.

Note that this method can be called without having created the persistence spaces from this JVM.

Throws:

CachePersistenceException - if the persistence storage cannot be destroyed