Package org.eclipse.team.core.variants

Class SessionResourceVariantByteStore

java.lang.Object

org.eclipse.team.core.variants.ResourceVariantByteStore

org.eclipse.team.core.variants.SessionResourceVariantByteStore

public class SessionResourceVariantByteStore
extends ResourceVariantByteStore

A ResourceVariantByteStore that caches the variant bytes in memory and does not persist them over workbench invocations.

Since:

3.0

Restriction:

This class is not intended to be subclassed by clients.

Constructor Summary

Constructors

Constructor	Description
SessionResourceVariantByteStore()

Method Summary

Modifier and Type	Method	Description
boolean	deleteBytes(IResource resource)	Method called to indicate that it is known that there is no variant associated with the local resource.
void	dispose()	Dispose of any cached sync bytes when this cache is no longer needed.
boolean	flushBytes(IResource resource, int depth)	Remove the bytes from the tree for the resource variants corresponding to the given local resource and its descendants to the given depth.
byte[]	getBytes(IResource resource)	Return the bytes for the variant corresponding the given local resource.
boolean	isEmpty()	Return true if no bytes are contained in this tree.
IResource[]	members(IResource resource)	Return the children of the given resource that have resource variants in this tree.
boolean	setBytes(IResource resource, byte[] bytes)	Set the bytes for the variant corresponding the given local resource.

Methods inherited from class org.eclipse.team.core.variants.ResourceVariantByteStore

equals, run

Methods inherited from class java.lang.Object

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

Constructor Detail

SessionResourceVariantByteStore

public SessionResourceVariantByteStore()

Method Detail

deleteBytes

public boolean deleteBytes(IResource resource)
                    throws TeamException

Description copied from class: ResourceVariantByteStore

Method called to indicate that it is known that there is no variant associated with the local resource. Subclasses may handle this information in different ways. The flush(IResource, int) method should be used in the cases where a client wishes to remove bytes for other reason.

Specified by:

deleteBytes in class ResourceVariantByteStore

Parameters:

resource - the local resource

Returns:

true if this changes the bytes for the variant

Throws:

TeamException - if an error occurs

dispose

public void dispose()

Description copied from class: ResourceVariantByteStore

Dispose of any cached sync bytes when this cache is no longer needed.

Specified by:

dispose in class ResourceVariantByteStore

flushBytes

public boolean flushBytes(IResource resource,
                          int depth)
                   throws TeamException

Description copied from class: ResourceVariantByteStore

Remove the bytes from the tree for the resource variants corresponding to the given local resource and its descendants to the given depth. After the bytes are removed, getBytes(resource) will return null for the affected resources.

Specified by:

flushBytes in class ResourceVariantByteStore

Parameters:

resource - the local resource

depth - the depth of the operation (one of IResource.DEPTH_ZERO, IResource.DEPTH_ONE, or IResource.DEPTH_INFINITE)

Returns:

true if there were bytes present which were removed

Throws:

TeamException - if an error occurs

getBytes

public byte[] getBytes(IResource resource)
                throws TeamException

Description copied from class: ResourceVariantByteStore

Return the bytes for the variant corresponding the given local resource. A return value of null means that no bytes have been stored for the resource variant. It is up to the client to determine whether this means that the resource variant does not exist or that it has not been fetched or otherwise determined yet.

Specified by:

getBytes in class ResourceVariantByteStore

Parameters:

resource - the local resource

Returns:

the bytes that represent the resource's variant

Throws:

TeamException - if an error occurs

isEmpty

public boolean isEmpty()

Return true if no bytes are contained in this tree.

Returns:

true if no bytes are contained in this tree.

members

public IResource[] members(IResource resource)

Description copied from class: ResourceVariantByteStore

Return the children of the given resource that have resource variants in this tree.

Specified by:

members in class ResourceVariantByteStore

Parameters:

resource - the parent resource

Returns:

the members who have resource variants in this tree.

setBytes

public boolean setBytes(IResource resource,
                        byte[] bytes)
                 throws TeamException

Description copied from class: ResourceVariantByteStore

Set the bytes for the variant corresponding the given local resource. The bytes should never be null. If it is known that the remote does not exist, deleteBytes(IResource) should be used instead. If the sync bytes for the remote are stale and should be removed, flushBytes(IResouce, int) should be called.

Specified by:

setBytes in class ResourceVariantByteStore

Parameters:

resource - the local resource

bytes - the bytes that represent the resource's variant

Returns:

true if the bytes changed

Throws:

TeamException - if an error occurs