Class UnixAttributeProvider

java.lang.Object

io.roastedroot.zerofs.AttributeProvider

io.roastedroot.zerofs.UnixAttributeProvider

final class UnixAttributeProvider
extends AttributeProvider

Attribute provider that provides the "unix" attribute view.

Field Summary

Fields

Modifier and Type	Field	Description
private static final Set<String>	ATTRIBUTES
private final ConcurrentMap<Object,Integer>	idCache
private static final Set<String>	INHERITED_VIEWS
private final AtomicInteger	uidGenerator

Constructor Summary

Constructors

Constructor	Description
UnixAttributeProvider()

Method Summary

Modifier and Type	Method	Description
Set<String>	fixedAttributes()	Returns the set of attributes that are always available from this provider.
Object	get(File file, String attribute)	Returns the value of the given attribute in the given file or null if the attribute is not supported by this provider.
private Integer	getUniqueId(Object object)	Returns an ID that is guaranteed to be the same for any invocation with equal objects.
Set<String>	inherits()	Returns the names of other providers that this provider inherits attributes from.
String	name()	Returns the view name that's used to get attributes from this provider.
void	set(File file, String view, String attribute, Object value, boolean create)	Sets the value of the given attribute in the given file object.
private static int	toMode(Set<PosixFilePermission> permissions)
UnixFileAttributeView	view(FileLookup lookup, Map<String, FileAttributeView> inheritedViews)	Returns a view of the file located by the given lookup callback.
Class<UnixFileAttributeView>	viewType()	Returns the type of the view interface that this provider supports.

Methods inherited from class AttributeProvider

attributes, attributesType, checkNotCreate, checkType, defaultValues, invalidType, readAttributes, supports, unsettable

Methods inherited from class Object

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

Field Details

ATTRIBUTES

private static final Set<String> ATTRIBUTES

INHERITED_VIEWS

private static final Set<String> INHERITED_VIEWS

uidGenerator

private final AtomicInteger uidGenerator

idCache

private final ConcurrentMap<Object,Integer> idCache

Constructor Details

UnixAttributeProvider

UnixAttributeProvider()

Method Details

name

public String name()

Description copied from class: AttributeProvider

Returns the view name that's used to get attributes from this provider.

Specified by:

name in class AttributeProvider

inherits

public Set<String> inherits()

Description copied from class: AttributeProvider

Returns the names of other providers that this provider inherits attributes from.

Overrides:

inherits in class AttributeProvider

fixedAttributes

public Set<String> fixedAttributes()

Description copied from class: AttributeProvider

Returns the set of attributes that are always available from this provider.

Specified by:

fixedAttributes in class AttributeProvider

viewType

public Class<UnixFileAttributeView> viewType()

Description copied from class: AttributeProvider

Returns the type of the view interface that this provider supports.

Specified by:

viewType in class AttributeProvider

view

public UnixFileAttributeView view(FileLookup lookup,
 Map<String, FileAttributeView> inheritedViews)

Description copied from class: AttributeProvider

Returns a view of the file located by the given lookup callback. The given map contains the views inherited by this view.

Specified by:

view in class AttributeProvider

getUniqueId

private Integer getUniqueId(Object object)

Returns an ID that is guaranteed to be the same for any invocation with equal objects.

get

public Object get(File file,
 String attribute)

Description copied from class: AttributeProvider

Returns the value of the given attribute in the given file or null if the attribute is not supported by this provider.

Specified by:

get in class AttributeProvider

set

public void set(File file,
 String view,
 String attribute,
 Object value,
 boolean create)

Description copied from class: AttributeProvider

Sets the value of the given attribute in the given file object. The create parameter indicates whether or not the value is being set upon creation of a new file via a user-provided FileAttribute.

Specified by:

set in class AttributeProvider

toMode

private static int toMode(Set<PosixFilePermission> permissions)