java.io

Class FilePermission

Implemented Interfaces:
Guard, Serializable

public final class FilePermission
extends Permission
implements Serializable

See Also:
Serialized Form

Constructor Summary

FilePermission(String pathExpression, String actionsString)
Create a new FilePermission.

Method Summary

boolean
equals(Object o)
Check two FilePermissions for semantic equality.
String
getActions()
Get the actions this FilePermission supports.
int
hashCode()
Get the hash code for this Object.

FilePermission's hash code is calculated as the exclusive or of the target String's hash code and the action String's hash code.

boolean
implies(Permission p)
Check to see if this permission implies another.

Methods inherited from class java.security.Permission

checkGuard, equals, getActions, getName, hashCode, implies, newPermissionCollection, toString

Methods inherited from class java.lang.Object

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

Constructor Details

FilePermission

public FilePermission(String pathExpression,
                      String actionsString)
Create a new FilePermission.
Parameters:
pathExpression - an expression specifying the paths this permission represents.
actionsString - a comma-separated list of the actions this permission represents. The actions must be "read", "write", "execute" and/or "delete".

Method Details

equals

public boolean equals(Object o)
Check two FilePermissions for semantic equality. Two FilePermissions are exactly equivalent if they have identical path expressions and have exactly the same access permissions.
Overrides:
equals in interface Permission
Parameters:
o - the Object to compare to.
Returns:
whether the Objects are semantically equivalent.

getActions

public String getActions()
Get the actions this FilePermission supports.
Overrides:
getActions in interface Permission
Returns:
the String representing the actions this FilePermission supports.

hashCode

public int hashCode()
Get the hash code for this Object.

FilePermission's hash code is calculated as the exclusive or of the target String's hash code and the action String's hash code.

Overrides:
hashCode in interface Permission
Returns:
the hash code for this Object.

implies

public boolean implies(Permission p)
Check to see if this permission implies another. Permission A implies permission B if these things are all true:
  1. A and B are both FilePermissions.
  2. All possible files in B are included in A (possibly more are in A).
  3. All actions B supports, A also supports.
Overrides:
implies in interface Permission
Parameters:
p - the Permission to compare against.
Returns:
whether this Permission implies p

FilePermission.java -- Copyright (C) 1998, 2000, 2003, 2004, 2005, 2006 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.