Package nl.knaw.dans.layerstore

Class TarArchiveProvider

java.lang.Object

nl.knaw.dans.layerstore.TarArchiveProvider

All Implemented Interfaces:

ArchiveProvider

public class TarArchiveProvider
extends Object
implements ArchiveProvider

An ArchiveProvider that creates and reads TAR archives.

Constructor Summary

Constructors

Constructor	Description
TarArchiveProvider(Path archiveRoot)

Method Summary

Modifier and Type	Method	Description
Archive	createArchive(long layerId)	Create a new Archive instance for the given layer ID.
boolean	exists(long layerId)	Check if an archive exists at the given path.
List<Long>	listLayerIds()	List all archived layer IDs.
void	validateRoot()	Verifies that the archive root contains only valid archives.

Methods inherited from class java.lang.Object

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

Constructor Details

TarArchiveProvider

public TarArchiveProvider(Path archiveRoot)

Method Details

createArchive

public Archive createArchive(long layerId)

Description copied from interface: ArchiveProvider

Create a new Archive instance for the given layer ID.

Specified by:

createArchive in interface ArchiveProvider

Parameters:

layerId - the layer ID

Returns:

the new archive

exists

public boolean exists(long layerId)

Description copied from interface: ArchiveProvider

Check if an archive exists at the given path.

Specified by:

exists in interface ArchiveProvider

Parameters:

layerId - the layer ID

Returns:

true if the archive exists, false otherwise

listLayerIds

public List<Long> listLayerIds()
                        throws IOException

Description copied from interface: ArchiveProvider

List all archived layer IDs.

Specified by:

listLayerIds in interface ArchiveProvider

Returns:

a list of layer IDs for which archives exist

Throws:

IOException

validateRoot

public void validateRoot()
                  throws IOException

Description copied from interface: ArchiveProvider

Verifies that the archive root contains only valid archives.

Specified by:

validateRoot in interface ArchiveProvider

Throws:

IOException