javax.tv.media
Class MediaSelectPermission

java.lang.Object
  java.security.Permission
      javax.tv.media.MediaSelectPermission

All Implemented Interfaces:

Serializable, Guard

public final class MediaSelectPermission
extends Permission
implements Serializable

This class represents permission to select, via a MediaSelectControl, the content that a JMF Player presents. A caller might have permission to select content referenced by some locators, but not others.

Version:

1.12, 10/09/00

Author:

Bill Foote

See Also:

Serialized Form

Constructor Summary

MediaSelectPermission(Locator locator)
Creates a new MediaSelectPermission object for the specified Locator.

MediaSelectPermission(String locator, String actions)
Creates a new MediaSelectPermission object for a Locator with the given external form.

Method Summary

boolean	equals(Object other) Tests two MediaSelectPermission objects for equality.
String	getActions() Reports the canonical string representation of the actions.
int	hashCode() Returns the hash code value for this object.
boolean	implies(Permission p) Checks if this MediaSelectPermission "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

MediaSelectPermission

public MediaSelectPermission(Locator locator)

Creates a new MediaSelectPermission object for the specified Locator.

Parameters:

locator - The locator for which to create the permission. A value of null indicates permission for all locators.

MediaSelectPermission

public MediaSelectPermission(String locator,
                             String actions)

Creates a new MediaSelectPermission object for a Locator with the given external form. The actions string is currently unused and should be null. This constructor is used by the Policy class to instantiate new Permission objects.

Parameters:

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

actions - Should be null.

Method Detail

implies

public boolean implies(Permission p)

Checks if this MediaSelectPermission "implies" the specified Permission.

More specifically, this method returns true if:

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

Specified by:

implies in class Permission

Parameters:

p - The Permission to check against.

Returns:

true if the specified Permission is implied by this object; false otherwise.

equals

public boolean equals(Object other)

Tests two MediaSelectPermission objects for equality. This method tests that other is of type MediaSelectPermission, and has the same Locator as this object.

Specified by:

equals in class Permission

Parameters:

other - The object to test for equality.

Returns:

true if other is a MediaSelectPermission, and has the same Locator as this MediaSelectPermission.

See Also:

Object.hashCode(), Hashtable

hashCode

public int hashCode()

Returns the hash code value for this object.

Specified by:

hashCode in class Permission

Returns:

The hash code value for this object.

See Also:

Object.equals(java.lang.Object), Hashtable

getActions

public String getActions()

Reports the canonical string representation of the actions. This is currently the empty string "", since there are no actions for a MediaSelectPermission.

Specified by:

getActions in class Permission

Returns:

The empty string "".