net.jini.security

Class AccessPermission

java.lang.Object

java.security.Permission

net.jini.security.AccessPermission

All Implemented Interfaces:

Serializable, Guard

Direct Known Subclasses:

ContextPermission

public class AccessPermission
extends Permission

Represents permission to call a method. An instance of this class contains a name (also referred to as a "target name") but no actions list; you either have the named permission or you don't. The target name can be any of the following forms:

 *
 Identifier
 *Suffix
 Identifier*
 QualifiedIdentifier.*
 QualifiedIdentifier.Identifier
 QualifiedIdentifier.*Suffix
 QualifiedIdentifier.Identifier*
 

where QualifiedIdentifier and Identifier are as defined in The Java(TM) Language Specification except that whitespace is not permitted, and Suffix is defined to be one or more characters that may be part of an Identifier. These forms are defined to match fully qualified names of the form QualifiedIdentifier.Identifier as follows:

Target Name	QualifiedIdentifier Match	Identifier Match
*	any	any
method	any	method
*suffix	any	any ending with suffix
prefix*	any	any starting with prefix
type.*	type	any
type.method	type	method
type.*suffix	type	any ending with suffix
type.prefix*	type	any starting with prefix

This class, and simple subclasses of it, can be used (for example) with BasicInvocationDispatcher. It is recommended that a simple subclass of this class be defined for each remote object implementation class that can be exported using an Exporter, to allow separation of grants in policy files.

Since:

2.0

Author:

Sun Microsystems, Inc.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AccessPermission(String name) Creates an instance with the specified target name.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj) Returns true if the specified object is an instance of the same class as this permission and has the same target name as this permission; returns false otherwise.
String	getActions() Returns the empty string.
int	hashCode() Returns a hash code value for this object.
boolean	implies(Permission perm) Returns true if every fully qualified name that matches the specified permission's name also matches this permission's name; returns false otherwise.

Methods inherited from class java.security.Permission

checkGuard, getName, newPermissionCollection, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

AccessPermission

public AccessPermission(String name)

Creates an instance with the specified target name.

Parameters:

name - the target name

Throws:

NullPointerException - if the target name is null

IllegalArgumentException - if the target name does not match the syntax specified in the comments at the beginning of this class

Method Detail

implies

public boolean implies(Permission perm)

Returns true if every fully qualified name that matches the specified permission's name also matches this permission's name; returns false otherwise.

Specified by:

implies in class Permission

Parameters:

perm - the permission to check

Returns:

true if every fully qualified name that matches the specified permission's name also matches this permission's name; false otherwise

equals

public boolean equals(Object obj)

Returns true if the specified object is an instance of the same class as this permission and has the same target name as this permission; returns false otherwise.

Specified by:

equals in class Permission

hashCode

public int hashCode()

Returns a hash code value for this object.

Specified by:

hashCode in class Permission

getActions

public String getActions()

Returns the empty string.

Specified by:

getActions in class Permission