Package com.github.marschall.memoryfilesystem

Class CurrentGroup

java.lang.Object

com.github.marschall.memoryfilesystem.CurrentGroup

public final class CurrentGroup
extends Object

Provides access to the group of the current user.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	CurrentGroup.GroupTask<V>	Functional interface for a task during which a certain group should be used.
static interface	CurrentGroup.VoidGroupTask	Functional interface for a task during which a certain group should be used.

Method Summary

Modifier and Type	Method	Description
static <V> V	useDuring(GroupPrincipal group, CurrentGroup.GroupTask<V> task)	Sets the current group for a certain period.
static void	useDuring(GroupPrincipal group, CurrentGroup.VoidGroupTask task)	Sets the current group for a certain period.

Methods inherited from class java.lang.Object

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

Method Details

useDuring

public static <V> V useDuring(GroupPrincipal group,
 CurrentGroup.GroupTask<V> task)
                       throws IOException

Sets the current group for a certain period.

Type Parameters:

V - the type of the return value

Parameters:

group - the group to use

task - during this task the given group will be used, will be called immediately by the current thread

Returns:

what the task returned

Throws:

IOException - if any of the code in the task throws an IOException

useDuring

public static void useDuring(GroupPrincipal group,
 CurrentGroup.VoidGroupTask task)
                      throws IOException

Sets the current group for a certain period.

Parameters:

group - the group to use

task - during this task the given group will be used, will be called immediately by the current thread

Throws:

IOException - if any of the code in the task throws an IOException

Since:

2.4.0