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

Default implementation of the LayerManager interface.

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
void	archive(Layer layer)	Request for the archiving of the given layer.
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

archive

public void archive(Layer layer)

Description copied from interface: LayerManager

Request for the archiving of the given layer. The operation may be performed asynchronously, so the caller should check the layer's status to determine when the archiving is complete.

Specified by:

archive in interface LayerManager

Parameters:

layer - the layer to archive

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