org.entityfs
Class AbstractAccessController

java.lang.Object
  org.entityfs.AbstractAccessController

All Implemented Interfaces:

AccessController

Direct Known Subclasses:

AccessGranterAccessController, DisabledAccessController

public abstract class AbstractAccessController
extends Object
implements AccessController

Abstract base class for AccessController implementations. It stores a thread's subject as an InheritableThreadLocal.

Since:

1.0

Author:

Karl Gustafsson

Constructor Summary

AbstractAccessController()

Method Summary

void	checkPermission(Permission p) Verify that the current Subject is authorized for the permission.
Collection<? extends LockCommand>	getLockCommandsForAccessControl(Entity ev) Get the collection of lock commands that have to be executed in order to get all required locks for performing an access control on the supplied entity.
Subject	getSubject() Get the Subject for the current thread.
void	setSubject(Subject s) Set the subject for the current thread.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.entityfs.security.AccessController

hasPermission, isEnabled

Constructor Detail

AbstractAccessController

public AbstractAccessController()

Method Detail

setSubject

public void setSubject(Subject s)

Description copied from interface: AccessController

Set the subject for the current thread. Don't invoke this method directly; use one of the Subject.doAs(java.security.PrivilegedAction) or Subject.doAs(java.security.PrivilegedExceptionAction) methods instead.

Specified by:

setSubject in interface AccessController

Parameters:

s - The new subject for the current thread. May be null.

getSubject

public Subject getSubject()

Description copied from interface: AccessController

Get the Subject for the current thread.

Specified by:

getSubject in interface AccessController

Returns:

The Subject, or null if the current thread does not have a Subject set.

checkPermission

public void checkPermission(Permission p)

Description copied from interface: AccessController

Verify that the current Subject is authorized for the permission.

The AccessController.hasPermission(Permission) method performs the same checks as this method, but returns false instead of throwing an exception if the subject does not have the requested permission.

Specified by:

checkPermission in interface AccessController

Parameters:

p - The permission. When EntityFS methods are calling this method, this is always an EntityPermission.

See Also:

AccessController.hasPermission(Permission), AccessController.getLockCommandsForAccessControl(Entity)

getLockCommandsForAccessControl

public Collection<? extends LockCommand> getLockCommandsForAccessControl(Entity ev)

Description copied from interface: AccessController

Get the collection of lock commands that have to be executed in order to get all required locks for performing an access control on the supplied entity.

Specified by:

getLockCommandsForAccessControl in interface AccessController

Parameters:

ev - The entity to perform access controls on. The entity must be in the file system that owns this AccessController.

Returns:

null

See Also:

AccessController.checkPermission(Permission)