IUserPrincipal Interface

Reference

Definition

Namespace:: Java.Nio.FileNio.Attributes

Assembly:: Mono.Android.dll

Important

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A Principal representing an identity used to determine access rights to objects in a file system.

[Android.Runtime.Register("java/nio/file/attribute/UserPrincipal", "", "Java.Nio.FileNio.Attributes.IUserPrincipalInvoker", ApiSince=26)]
public interface IUserPrincipal : IDisposable, Java.Interop.IJavaPeerable, Java.Security.IPrincipal

[<Android.Runtime.Register("java/nio/file/attribute/UserPrincipal", "", "Java.Nio.FileNio.Attributes.IUserPrincipalInvoker", ApiSince=26)>]
type IUserPrincipal = interface
    interface IPrincipal
    interface IJavaObject
    interface IDisposable
    interface IJavaPeerable

Derived: Java.Nio.FileNio.Attributes.IGroupPrincipal

Attributes: RegisterAttribute

Implements: IJavaObject IJavaPeerable IPrincipal IDisposable

Remarks

A Principal representing an identity used to determine access rights to objects in a file system.

On many platforms and file systems an entity requires appropriate access rights or permissions in order to access objects in a file system. The access rights are generally performed by checking the identity of the entity. For example, on implementations that use Access Control Lists (ACLs) to enforce privilege separation then a file in the file system may have an associated ACL that determines the access rights of identities specified in the ACL.

A UserPrincipal object is an abstract representation of an identity. It has a #getName() name that is typically the username or account name that it represents. User principal objects may be obtained using a UserPrincipalLookupService, or returned by FileAttributeView implementations that provide access to identity related attributes. For example, the AclFileAttributeView and PosixFileAttributeView provide access to a file's PosixFileAttributes#owner owner.

Added in 1.7.

Java documentation for java.nio.file.attribute.UserPrincipal.

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Properties

Handle	Gets the JNI value of the underlying Android object. (Inherited from IJavaObject)
JniIdentityHashCode	Returns the value of `java.lang.System.identityHashCode()` for the wrapped instance. (Inherited from IJavaPeerable)
JniManagedPeerState	State of the managed peer. (Inherited from IJavaPeerable)
JniPeerMembers	Member access and invocation support. (Inherited from IJavaPeerable)
Name	Returns the name of this `Principal`. (Inherited from IPrincipal)
PeerReference	Returns a JniObjectReference of the wrapped Java object instance. (Inherited from IJavaPeerable)

Methods

Disposed()	Called when the instance has been disposed. (Inherited from IJavaPeerable)
DisposeUnlessReferenced()	If there are no outstanding references to this instance, then calls `Dispose()`; otherwise, does nothing. (Inherited from IJavaPeerable)
Equals(Object)	Compares this principal to the specified object. (Inherited from IPrincipal)
Finalized()	Called when the instance has been finalized. (Inherited from IJavaPeerable)
GetHashCode()	Returns a hashcode for this principal. (Inherited from IPrincipal)
Implies(Subject)	Returns true if the specified subject is implied by this principal. (Inherited from IPrincipal)
SetJniIdentityHashCode(Int32)	Set the value returned by `JniIdentityHashCode`. (Inherited from IJavaPeerable)
SetJniManagedPeerState(JniManagedPeerStates)	(Inherited from IJavaPeerable)
SetPeerReference(JniObjectReference)	Set the value returned by `PeerReference`. (Inherited from IJavaPeerable)
ToString()	Returns a string representation of this principal. (Inherited from IPrincipal)
UnregisterFromRuntime()	Unregister this instance so that the runtime will not return it from future Java.Interop.JniRuntime+JniValueManager.PeekValue invocations. (Inherited from IJavaPeerable)

Extension Methods

JavaCast<TResult>(IJavaObject)	Performs an Android runtime-checked type conversion.
JavaCast<TResult>(IJavaObject)
GetJniTypeName(IJavaPeerable)

Applies to

通过