java.security
Class PermissionsHash

java.lang.Object
  |
  +--java.security.PermissionCollection
        |
        +--java.security.PermissionsHash

All Implemented Interfaces:

Serializable

final class PermissionsHash

extends PermissionCollection

implements Serializable

A PermissionsHash stores a homogeneous set of permissions in a hashtable.

Version:

1.50, 02/01/02

Author:

Roland Schemers

See Also:

Permission, Permissions, Serialized Form

Field Summary

private Hashtable

perms

Fields inherited from class java.security.PermissionCollection

Constructor Summary

(package private)

PermissionsHash() Create an empty PermissionsHash object.

Method Summary

void	add(Permission permission) Adds a permission to the PermissionsHash.
Enumeration	elements() Returns an enumeration of all the Permission objects in the container.
boolean	implies(Permission permission) Check and see if this set of permissions implies the permissions expressed in "permission".

Methods inherited from class java.security.PermissionCollection

isReadOnly, setReadOnly, toString

Methods inherited from class java.lang.Object

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

Field Detail

perms

private Hashtable perms

Constructor Detail

PermissionsHash

PermissionsHash()

Create an empty PermissionsHash object.

Method Detail

add

public void add(Permission permission)

Adds a permission to the PermissionsHash.

Specified by:

add in class PermissionCollection

Parameters:

permission - the Permission object to add.

implies

public boolean implies(Permission permission)

Check and see if this set of permissions implies the permissions expressed in "permission".

Specified by:

implies in class PermissionCollection

Parameters:

permission - the Permission object to compare

Returns:

true if "permission" is a proper subset of a permission in the set, false if not.

elements

public Enumeration elements()

Returns an enumeration of all the Permission objects in the container.

Specified by:

elements in class PermissionCollection

Returns:

an enumeration of all the Permissions.