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Copyright © 2006 Sun Microsystems, Inc. All rights reserved.

javax.tv.service.selection
Class SelectPermission

java.lang.Object
  java.security.Permission
      javax.tv.service.selection.SelectPermission

All Implemented Interfaces:

java.security.Guard, java.io.Serializable

public final class SelectPermission

extends java.security.Permission

implements java.io.Serializable

SelectPermission represents permission to perform a select() operation on a ServiceContext. A caller might have permission to select some content but not others.

The actions string is either "own" or "*". The string "own" means the permission applies to your own service context, acquired via ServiceContextFactory.createServiceContext() or ServiceContextFactory.getServiceContext(javax.tv.xlet.XletContext). The string "*" implies permission to these, plus permission for service contexts obtained from all other sources.

Note that undefined actions strings may be provided to the constructors of this class, but subsequent calls to SecurityManager.checkPermission() with the resulting SelectPermission object will fail.

See Also:

Serialized Form

Constructor Summary

SelectPermission(Locator locator, java.lang.String actions)
Creates a new SelectPermission object for the specified locator.

SelectPermission(java.lang.String locator, java.lang.String actions)
Creates a new SelectPermission object for a locator with the given external form.

Method Summary

boolean	equals(java.lang.Object other) Checks two SelectPermission objects for equality.
java.lang.String	getActions() Returns the canonical string representation of the actions.
int	hashCode() Returns the hash code value for this object.
boolean	implies(java.security.Permission p) Checks if this SelectPermission object "implies" the specified permission.

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

SelectPermission

public SelectPermission(Locator locator,
                        java.lang.String actions)

Creates a new SelectPermission object for the specified locator.

Parameters:

locator - The locator. A value of null indicates permission for all locators.

actions - The actions string, as detailed in the class description.

SelectPermission

public SelectPermission(java.lang.String locator,
                        java.lang.String actions)

Creates a new SelectPermission object for a locator with the given external form. This constructor exists for use by the Policy object to instantiate new Permission objects.

Parameters:

locator - The external form of the locator. The string "*" indicates all locators.

actions - The actions string, as detailed in the class description.

Method Detail

implies

public boolean implies(java.security.Permission p)

Checks if this SelectPermission object "implies" the specified permission. More specifically, this method returns true if:

• p is an instance of SelectPermission, and
• p's action string matches this object's, or this object has "*" as an action string, and
• p's locator's external form matches this object's locator string, or this object's locator string is "*".

Parameters:

p - The permission against which to check.

Returns:

true if the specified permission is implied by this object, false if not.

equals

public boolean equals(java.lang.Object other)

Checks two SelectPermission objects for equality. Tests that the given object is a SelectPermission and has the same Locator and actions string as this object.

Parameters:

other - The object to test for equality.

Returns:

true if other is a SelectPermission and has the same locator and actions string as this SelectPermission object; false otherwise.

hashCode

public int hashCode()

Returns the hash code value for this object.

Returns:

A hash code value for this object.

getActions

public java.lang.String getActions()

Returns the canonical string representation of the actions.

Returns:

The canonical string representation of the actions.