org.apache.sling.api.resource

Interface ModifyingResourceProvider

All Superinterfaces:

ResourceProvider

public interface ModifyingResourceProvider
extends ResourceProvider

A modifying resource provider is an extension of a resource provider which is only supported if the resource provider has been created through a ResourceProviderFactory. A modifying resource provider allows to create, update, and delete resources. Update is handled through ModifiableValueMap. All changes should be kept in a transient store until commit(ResourceResolver) is called. revert(ResourceResolver) discards all transient changes. If the modifying resource provider needs to clean up resources when it is discarded like removing objects from the transient state which are not committed etc., it should also implement the DynamicResourceProvider interface.

Since:

2.2 (Sling API Bundle 2.2.0)

See Also:

ResourceProviderFactory.getResourceProvider(java.util.Map), ResourceProviderFactory.getAdministrativeResourceProvider(java.util.Map)

Field Summary

Fields inherited from interface org.apache.sling.api.resource.ResourceProvider

OWNS_ROOTS, RESOURCE_TYPE_SYNTHETIC, ROOTS, SERVICE_NAME, USE_RESOURCE_ACCESS_SECURITY

Method Summary

Methods

Modifier and Type	Method and Description
void	commit(ResourceResolver resolver) Commit all transient changes: create, delete and updates
Resource	create(ResourceResolver resolver, String path, Map<String,Object> properties) Create a new resource at the given path.
void	delete(ResourceResolver resolver, String path) Delete the resource at the given path.
boolean	hasChanges(ResourceResolver resolver) Are there any transient changes?
void	revert(ResourceResolver resolver) Revert all transient changes: create, delete and updates.

Methods inherited from interface org.apache.sling.api.resource.ResourceProvider

getResource, getResource, listChildren

Method Detail

create

Resource create(ResourceResolver resolver,
              String path,
              Map<String,Object> properties)
                throws PersistenceException

Create a new resource at the given path. The new resource is put into the transient space of this provider until commit(ResourceResolver) is called. A resource provider should value ResourceResolver.PROPERTY_RESOURCE_TYPE to set the resource type of a resource.

Parameters:

resolver - The current resource resolver.

path - The resource path.

properties - Optional properties

Returns:

The new resource.

Throws:

PersistenceException - If anything fails

delete

void delete(ResourceResolver resolver,
          String path)
            throws PersistenceException

Delete the resource at the given path. This change is kept in the transient space of this provider until commit(ResourceResolver) is called.

Parameters:

resolver - The current resource resolver.

path - The resource path.

Throws:

PersistenceException - If anything fails

revert

void revert(ResourceResolver resolver)

Revert all transient changes: create, delete and updates.

Parameters:

resolver - The current resource resolver.

commit

void commit(ResourceResolver resolver)
            throws PersistenceException

Commit all transient changes: create, delete and updates

Parameters:

resolver - The current resource resolver.

Throws:

PersistenceException - If anything fails

hasChanges

boolean hasChanges(ResourceResolver resolver)

Are there any transient changes?

Parameters:

resolver - The current resource resolver.