Package nl.knaw.dans.layerstore

Class LayerManagerImpl

java.lang.Object

nl.knaw.dans.layerstore.LayerManagerImpl

All Implemented Interfaces:

LayerManager

public class LayerManagerImpl
extends Object
implements LayerManager

Constructor Summary

Constructors

Constructor	Description
LayerManagerImpl(@NonNull Path stagingRoot, @NonNull ArchiveProvider archiveProvider, @NonNull LayerArchiver layerArchiver)	Creates a new LayerManagerImpl.

Method Summary

Modifier and Type	Method	Description
Layer	getLayer(long id)	Returns the layer with the given id.
Layer	getTopLayer()	Returns the current top layer.
List<Long>	listLayerIds()	Lists all layer IDs that are currently managed.
Layer	newTopLayer()	Closes the current top layer (if present) and creates a new top layer.

Methods inherited from class java.lang.Object

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

Constructor Details

LayerManagerImpl

public LayerManagerImpl(@NonNull
 @NonNull Path stagingRoot,
 @NonNull
 @NonNull ArchiveProvider archiveProvider,
 @NonNull
 @NonNull LayerArchiver layerArchiver)
                 throws IOException

Creates a new LayerManagerImpl.

Parameters:

stagingRoot - the root directory for staging layers.

archiveProvider - the archive provider to use.

layerArchiver - the layer archiver to use.

Throws:

IOException - if the staging root directory cannot be created.

Method Details

newTopLayer

public Layer newTopLayer()
                  throws IOException

Description copied from interface: LayerManager

Closes the current top layer (if present) and creates a new top layer. The old top layer will be scheduled for archiving.

Specified by:

newTopLayer in interface LayerManager

Throws:

IOException

listLayerIds

public List<Long> listLayerIds()
                        throws IOException

Description copied from interface: LayerManager

Lists all layer IDs that are currently managed.

Specified by:

listLayerIds in interface LayerManager

Returns:

a list of layer IDs

Throws:

IOException - if an I/O error occurs

getLayer

public Layer getLayer(long id)

Description copied from interface: LayerManager

Returns the layer with the given id.

Specified by:

getLayer in interface LayerManager

Parameters:

id - the id of the layer

Returns:

the layer

getTopLayer

public Layer getTopLayer()

Description copied from interface: LayerManager

Returns the current top layer.

Specified by:

getTopLayer in interface LayerManager

Returns:

the current top layer