Class UserDefinedAttributeProvider

java.lang.Object

io.roastedroot.zerofs.AttributeProvider

io.roastedroot.zerofs.UserDefinedAttributeProvider

final class UserDefinedAttributeProvider
extends AttributeProvider

Attribute provider that provides the UserDefinedFileAttributeView ("user"). Unlike most other attribute providers, this one has no pre-defined set of attributes. Rather, it allows arbitrary user defined attributes to be set (as ByteBuffer or byte[]) and read (as byte[]).

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	UserDefinedAttributeProvider.View	Implementation of UserDefinedFileAttributeView.

Constructor Summary

Constructors

Constructor	Description
UserDefinedAttributeProvider()

Method Summary

Modifier and Type	Method	Description
Set<String>	attributes(File file)	Returns the set of attributes supported by this view that are present in the given file.
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.
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.
boolean	supports(String attribute)	Returns whether or not this provider supports the given attribute directly.
private static Set<String>	userDefinedAttributes(File file)
UserDefinedFileAttributeView	view(FileLookup lookup, Map<String, FileAttributeView> inheritedViews)	Returns a view of the file located by the given lookup callback.
Class<UserDefinedFileAttributeView>	viewType()	Returns the type of the view interface that this provider supports.

Methods inherited from class AttributeProvider

attributesType, checkNotCreate, checkType, defaultValues, inherits, invalidType, readAttributes, unsettable

Methods inherited from class Object

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

Constructor Details

UserDefinedAttributeProvider

UserDefinedAttributeProvider()

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

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

supports

public boolean supports(String attribute)

Description copied from class: AttributeProvider

Returns whether or not this provider supports the given attribute directly.

Overrides:

supports in class AttributeProvider

attributes

public Set<String> attributes(File file)

Description copied from class: AttributeProvider

Returns the set of attributes supported by this view that are present in the given file. For most providers, this will be a fixed set of attributes.

Overrides:

attributes in class AttributeProvider

userDefinedAttributes

private static Set<String> userDefinedAttributes(File file)

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

viewType

public Class<UserDefinedFileAttributeView> 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 UserDefinedFileAttributeView 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