程序包 java.nio.file.attribute

接口 FileOwnerAttributeView

所有超级接口:

AttributeView, FileAttributeView

所有已知子接口:

AclFileAttributeView, PosixFileAttributeView

public interface FileOwnerAttributeView
extends FileAttributeView

A file attribute view that supports reading or updating the owner of a file. This file attribute view is intended for file system implementations that support a file attribute that represents an identity that is the owner of the file. Often the owner of a file is the identity of the entity that created the file.

The getOwner or setOwner methods may be used to read or update the owner of the file.

The getAttribute and setAttribute methods may also be used to read or update the owner. In that case, the owner attribute is identified by the name "owner", and the value of the attribute is a UserPrincipal.

从以下版本开始:

1.7

方法概要

限定符和类型	方法	说明
UserPrincipal	getOwner()	Read the file owner.
String	name()	Returns the name of the attribute view.
void	setOwner(UserPrincipal owner)	Updates the file owner.

方法详细资料

name

String name()

Returns the name of the attribute view. Attribute views of this type have the name "owner".

指定者:

name 在接口中 AttributeView

返回:

the name of the attribute view

getOwner

UserPrincipal getOwner()
                throws IOException

Read the file owner.

It it implementation specific if the file owner can be a GroupPrincipal.

返回:

the file owner

抛出:

IOException - if an I/O error occurs

SecurityException - In the case of the default provider, a security manager is installed, and it denies RuntimePermission("accessUserInformation") or its SecurityManager#checkRead(String) method denies read access to the file.

setOwner

void setOwner(UserPrincipal owner)
       throws IOException

Updates the file owner.

It it implementation specific if the file owner can be a GroupPrincipal. To ensure consistent and correct behavior across platforms it is recommended that this method should only be used to set the file owner to a user principal that is not a group.

参数:

owner - the new file owner

抛出:

IOException - if an I/O error occurs, or the owner parameter is a group and this implementation does not support setting the owner to a group

SecurityException - In the case of the default provider, a security manager is installed, and it denies RuntimePermission("accessUserInformation") or its SecurityManager#checkWrite(String) method denies write access to the file.