Package com.google.common.jimfs

Class PosixAttributeProvider

java.lang.Object

com.google.common.jimfs.AttributeProvider

com.google.common.jimfs.PosixAttributeProvider

final class PosixAttributeProvider
extends AttributeProvider

Attribute provider that provides the PosixFileAttributeView ("posix") and allows reading of PosixFileAttributes.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	PosixAttributeProvider.Attributes	Implementation of PosixFileAttributes.
private static class	PosixAttributeProvider.View	Implementation of PosixFileAttributeView.

Field Summary

Fields

Modifier and Type	Field	Description
private static com.google.common.collect.ImmutableSet<java.lang.String>	ATTRIBUTES
private static java.nio.file.attribute.GroupPrincipal	DEFAULT_GROUP
private static com.google.common.collect.ImmutableSet<java.nio.file.attribute.PosixFilePermission>	DEFAULT_PERMISSIONS
private static com.google.common.collect.ImmutableSet<java.lang.String>	INHERITED_VIEWS

Constructor Summary

Constructors

Constructor	Description
PosixAttributeProvider()

Method Summary

Modifier and Type	Method	Description
java.lang.Class<java.nio.file.attribute.PosixFileAttributes>	attributesType()	Returns the type of file attributes object this provider supports, or null if it doesn't support reading its attributes as an object.
com.google.common.collect.ImmutableMap<java.lang.String,?>	defaultValues(java.util.Map<java.lang.String,?> userProvidedDefaults)	Returns a map containing the default attribute values for this provider.
com.google.common.collect.ImmutableSet<java.lang.String>	fixedAttributes()	Returns the set of attributes that are always available from this provider.
@Nullable java.lang.Object	get(File file, java.lang.String attribute)	Returns the value of the given attribute in the given file or null if the attribute is not supported by this provider.
com.google.common.collect.ImmutableSet<java.lang.String>	inherits()	Returns the names of other providers that this provider inherits attributes from.
java.lang.String	name()	Returns the view name that's used to get attributes from this provider.
java.nio.file.attribute.PosixFileAttributes	readAttributes(File file)	Reads this provider's attributes from the given file as an attributes object.
void	set(File file, java.lang.String view, java.lang.String attribute, java.lang.Object value, boolean create)	Sets the value of the given attribute in the given file object.
private static com.google.common.collect.ImmutableSet<java.nio.file.attribute.PosixFilePermission>	toPermissions(java.util.Set<?> set)
java.nio.file.attribute.PosixFileAttributeView	view(FileLookup lookup, com.google.common.collect.ImmutableMap<java.lang.String,java.nio.file.attribute.FileAttributeView> inheritedViews)	Returns a view of the file located by the given lookup callback.
java.lang.Class<java.nio.file.attribute.PosixFileAttributeView>	viewType()	Returns the type of the view interface that this provider supports.

Methods inherited from class com.google.common.jimfs.AttributeProvider

attributes, checkNotCreate, checkType, invalidType, supports, unsettable

Methods inherited from class java.lang.Object

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

Field Detail

ATTRIBUTES

private static final com.google.common.collect.ImmutableSet<java.lang.String> ATTRIBUTES

INHERITED_VIEWS

private static final com.google.common.collect.ImmutableSet<java.lang.String> INHERITED_VIEWS

DEFAULT_GROUP

private static final java.nio.file.attribute.GroupPrincipal DEFAULT_GROUP

DEFAULT_PERMISSIONS

private static final com.google.common.collect.ImmutableSet<java.nio.file.attribute.PosixFilePermission> DEFAULT_PERMISSIONS

Constructor Detail

PosixAttributeProvider

PosixAttributeProvider()

Method Detail

name

public java.lang.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 com.google.common.collect.ImmutableSet<java.lang.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 com.google.common.collect.ImmutableSet<java.lang.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

defaultValues

public com.google.common.collect.ImmutableMap<java.lang.String,?> defaultValues(java.util.Map<java.lang.String,?> userProvidedDefaults)

Description copied from class: AttributeProvider

Returns a map containing the default attribute values for this provider. The keys of the map are attribute identifier strings (in "view:attribute" form) and the value for each is the default value that should be set for that attribute when creating a new file.

The given map should be in the same format and contains user-provided default values. If the user provided any default values for attributes handled by this provider, those values should be checked to ensure they are of the correct type. Additionally, if any changes to a user-provided attribute are necessary (for example, creating an immutable defensive copy), that should be done. The resulting values should be included in the result map along with default values for any attributes the user did not provide a value for.

Overrides:

defaultValues in class AttributeProvider

get

public @Nullable java.lang.Object get(File file,
                                      java.lang.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,
                java.lang.String view,
                java.lang.String attribute,
                java.lang.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

toPermissions

private static com.google.common.collect.ImmutableSet<java.nio.file.attribute.PosixFilePermission> toPermissions(java.util.Set<?> set)

viewType

public java.lang.Class<java.nio.file.attribute.PosixFileAttributeView> 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 java.nio.file.attribute.PosixFileAttributeView view(FileLookup lookup,
                                                           com.google.common.collect.ImmutableMap<java.lang.String,java.nio.file.attribute.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

attributesType

public java.lang.Class<java.nio.file.attribute.PosixFileAttributes> attributesType()

Description copied from class: AttributeProvider

Returns the type of file attributes object this provider supports, or null if it doesn't support reading its attributes as an object.

Overrides:

attributesType in class AttributeProvider

readAttributes

public java.nio.file.attribute.PosixFileAttributes readAttributes(File file)

Description copied from class: AttributeProvider

Reads this provider's attributes from the given file as an attributes object.

Overrides:

readAttributes in class AttributeProvider