java.security

Class AccessControlContext


public final class AccessControlContext
extends Object

AccessControlContext makes system resource access decsion based on permission rights. It is used for a specific context and has only one method checkPermission. It is similar to AccessController except that it makes decsions based on the current context instead of the the current thread. It is created by call AccessController.getContext method.
Since:
1.2

Constructor Summary

AccessControlContext(AccessControlContext acc, DomainCombiner combiner)
Construct a new AccessControlContext with the specified ProtectionDomains and DomainCombiner.
AccessControlContext(ProtectionDomain[] context)
Construct a new AccessControlContext with the specified ProtectionDomains.

Method Summary

void
checkPermission(Permission perm)
Determines whether or not the specific permission is granted depending on the context it is within.
boolean
equals(Object obj)
Checks if two AccessControlContexts are equal.
DomainCombiner
getDomainCombiner()
Returns the Domain Combiner associated with the AccessControlContext
int
hashCode()
Computes a hash code of this class

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

AccessControlContext

public AccessControlContext(AccessControlContext acc,
                            DomainCombiner combiner)
Construct a new AccessControlContext with the specified ProtectionDomains and DomainCombiner.

Code calling this constructor must have a SecurityPermission of createAccessControlContext.

Throws:
SecurityException - If the caller does not have permission to create an access control context.
Since:
1.3

AccessControlContext

public AccessControlContext(ProtectionDomain[] context)
Construct a new AccessControlContext with the specified ProtectionDomains. context must not be null and duplicates will be removed.
Parameters:
context - The ProtectionDomains to use

Method Details

checkPermission

public void checkPermission(Permission perm)
            throws AccessControlException
Determines whether or not the specific permission is granted depending on the context it is within.
Parameters:
perm - a permission to check
Throws:
AccessControlException - if the permssion is not permitted

equals

public boolean equals(Object obj)
Checks if two AccessControlContexts are equal. It first checks if obj is an AccessControlContext class, and then checks if each ProtectionDomain matches.
Overrides:
equals in interface Object
Parameters:
obj - The object to compare this class to
Returns:
true if equal, false otherwise

getDomainCombiner

public DomainCombiner getDomainCombiner()
Returns the Domain Combiner associated with the AccessControlContext
Returns:
the DomainCombiner

hashCode

public int hashCode()
Computes a hash code of this class
Overrides:
hashCode in interface Object
Returns:
a hash code representing this class

AccessControlContext.java --- Access Control Context Class Copyright (C) 1999, 2004 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.