Package dev.getelements.elements.rt.transact

Class StandardSnapshot

java.lang.Object

dev.getelements.elements.rt.transact.StandardSnapshot

All Implemented Interfaces:

Snapshot, AutoCloseable

public class StandardSnapshot
extends Object
implements Snapshot

Nested Class Summary

Nested classes/interfaces inherited from interface dev.getelements.elements.rt.transact.Snapshot

Snapshot.Builder

Constructor Summary

Constructors

Constructor	Description
StandardSnapshot(Monitor monitor, DataStore dataStore, SortedSet<ResourceId> resourceIds, SortedSet<Path> paths)

Method Summary

Modifier and Type	Method	Description
ResourceEntry	add(ResourceId resourceId)	Adds a new ResourceEntry with the supplied ResourceId, returning the result.
void	close()	Closes this snapshot, releasing any underlying system resources associated with this snapshot.
Optional<ResourceEntry>	findResourceEntry(ResourceId resourceId)	Finds the ResourceEntry at the supplied ResourceId.
Optional<ResourceEntry>	findResourceEntry(Path path)	Finds the ResourceEntry at the supplied path.
Optional<TaskEntry<ResourceId>>	findTaskEntry(ResourceId resourceId)	Finds the TaskEntry associated with the supplied ResourceId.
DataStore	getDataStore()
TaskEntry<ResourceId>	getOrCreateTaskEntry(ResourceId resourceId)	Gets the TaskEntry or throws an instance of SnapshotMissException.
Collection<ResourceEntry>	getResourceEntries()	Gets all ResourceEntry instances in this Snapshot.
Collection<TaskEntry<?>>	getTaskEntries()	Gets all TaskEntry instances in this Snapshot.
Stream<ResourceService.Listing>	list(Path path)	List all ResourceEntry instances matching the Path.

Methods inherited from class java.lang.Object

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

Methods inherited from interface dev.getelements.elements.rt.transact.Snapshot

getResourceEntry, getResourceEntry

Constructor Details

StandardSnapshot

public StandardSnapshot(Monitor monitor,
 DataStore dataStore,
 SortedSet<ResourceId> resourceIds,
 SortedSet<Path> paths)

Method Details

list

public Stream<ResourceService.Listing> list(Path path)

Description copied from interface: Snapshot

List all ResourceEntry instances matching the Path. As a Snapshot may be backed by a Stream from the DataStore, it is required that the Stream reach a terminal state or be explicitly closed. Closing this Snapshot will close the stream associatd with it.

Specified by:

list in interface Snapshot

Parameters:

path - the path

Returns:

the Stream<ResourceEntry>

findTaskEntry

public Optional<TaskEntry<ResourceId>> findTaskEntry(ResourceId resourceId)

Description copied from interface: Snapshot

Finds the TaskEntry associated with the supplied ResourceId.

Specified by:

findTaskEntry in interface Snapshot

Parameters:

resourceId - the ResourceId

Returns:

the Optional containing the TaskEntry<ResourceId>

getOrCreateTaskEntry

public TaskEntry<ResourceId> getOrCreateTaskEntry(ResourceId resourceId)

Description copied from interface: Snapshot

Gets the TaskEntry or throws an instance of SnapshotMissException.

Specified by:

getOrCreateTaskEntry in interface Snapshot

Parameters:

resourceId - the path

Returns:

the Optional containing a TaskEntry never null

findResourceEntry

public Optional<ResourceEntry> findResourceEntry(Path path)

Description copied from interface: Snapshot

Finds the ResourceEntry at the supplied path.

Specified by:

findResourceEntry in interface Snapshot

Parameters:

path - the path

Returns:

an Optional containing the Entry.

findResourceEntry

public Optional<ResourceEntry> findResourceEntry(ResourceId resourceId)

Description copied from interface: Snapshot

Finds the ResourceEntry at the supplied ResourceId.

Specified by:

findResourceEntry in interface Snapshot

Parameters:

resourceId - the path

Returns:

an Optional containing the Entry.

getTaskEntries

public Collection<TaskEntry<?>> getTaskEntries()

Description copied from interface: Snapshot

Gets all TaskEntry instances in this Snapshot.

Specified by:

getTaskEntries in interface Snapshot

Returns:

gets all TaskEntry instances associated with this Snapshot

getResourceEntries

public Collection<ResourceEntry> getResourceEntries()

Description copied from interface: Snapshot

Gets all ResourceEntry instances in this Snapshot.

Specified by:

getResourceEntries in interface Snapshot

Returns:

gets all ResourceEntry instances associated with this Snapshot

add

public ResourceEntry add(ResourceId resourceId)

Description copied from interface: Snapshot

Adds a new ResourceEntry with the supplied ResourceId, returning the result. Any previously accessed ResourceEntry instances.

Specified by:

add in interface Snapshot

Parameters:

resourceId - the ResourceId

Returns:

the ResourceEntry which was added.

close

public void close()

Description copied from interface: Snapshot

Closes this snapshot, releasing any underlying system resources associated with this snapshot.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Snapshot

getDataStore

public DataStore getDataStore()