Package net.jini.core.constraint

Class DelegationAbsoluteTime

java.lang.Object
net.jini.core.constraint.DelegationAbsoluteTime
All Implemented Interfaces:
Serializable, InvocationConstraint
public final class DelegationAbsoluteTime extends Object implements InvocationConstraint, Serializable
Represents a constraint on delegation, such that if delegation is permitted, it be permitted only for a range of absolute times. The mechanisms and credentials used to support this are not specified by this constraint. Each end of the range is itself specified as a range, yielding four absolute times, all specified in milliseconds from midnight, January 1, 1970 UTC. The four times have the following semantics:
  • minStart - delegation must not be permitted any earlier than this time
  • maxStart - delegation must be permitted from this time onwards
  • minStop - delegation must be permitted up until at least this time
  • maxStop - delegation must not be permitted after this time
To accommodate clock skew between systems, it may be desirable to specify start times that are earlier than the current time.

The use of an instance of this class does not directly imply a ClientAuthentication.YES constraint or a Delegation.YES constraint; those must be specified separately to ensure that the client actually authenticates itself and that delegation is actually used. Because this constraint is conditional on delegation, it does not conflict with ClientAuthentication.NO or Delegation.NO.

Since:
2.0
Author:
Sun Microsystems, Inc.
See Also:

  • Constructor Summary

    Constructors
    Constructor
    Description
    DelegationAbsoluteTime(long minStart, long maxStart, long minStop, long maxStop)
    Creates a constraint with the specified absolute times.
    DelegationAbsoluteTime(Date minStart, Date maxStart, Date minStop, Date maxStop)
    Creates a constraint with the specified dates.

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    equals(Object obj)
    Two instances of this class are equal if both have the same minimum start, the same maximum start, the same minimum stop, and the same maximum stop.
    long
    getMaxStart()
    Returns the maximum start time in milliseconds from midnight, January 1, 1970 UTC.
    long
    getMaxStop()
    Returns the maximum stop time in milliseconds from midnight, January 1, 1970 UTC.
    long
    getMinStart()
    Returns the minimum start time in milliseconds from midnight, January 1, 1970 UTC.
    long
    getMinStop()
    Returns the minimum stop time in milliseconds from midnight, January 1, 1970 UTC.
    int
    hashCode()
    Returns a hash code value for this object.
    String
    toString()
    Returns a string representation of this object.

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • DelegationAbsoluteTime

      public DelegationAbsoluteTime(long minStart, long maxStart, long minStop, long maxStop)
      Creates a constraint with the specified absolute times.
      Parameters:
      minStart - the minimum start time in milliseconds from midnight, January 1, 1970 UTC
      maxStart - the maximum start time in milliseconds from midnight, January 1, 1970 UTC
      minStop - the minimum stop time in milliseconds from midnight, January 1, 1970 UTC
      maxStop - the maximum stop time in milliseconds from midnight, January 1, 1970 UTC
      Throws:
      IllegalArgumentException - if minStart is greater than maxStart, or maxStart is greater than minStop, or minStop is greater than maxStop

    • DelegationAbsoluteTime

      public DelegationAbsoluteTime(Date minStart, Date maxStart, Date minStop, Date maxStop)
      Creates a constraint with the specified dates. The arguments passed to the constructor are neither modified nor retained; subsequent changes to those arguments have no effect on the instance created.
      Parameters:
      minStart - the minimum start date
      maxStart - the maximum start date
      minStop - the minimum stop date
      maxStop - the maximum stop date
      Throws:
      NullPointerException - if any argument is null
      IllegalArgumentException - if minStart is later than maxStart, or maxStart is later than minStop, or minStop is later than maxStop

  • Method Details

    • getMinStart

      public long getMinStart()
      Returns the minimum start time in milliseconds from midnight, January 1, 1970 UTC.
      Returns:
      the minimum start time in milliseconds from midnight, January 1, 1970 UTC

    • getMaxStart

      public long getMaxStart()
      Returns the maximum start time in milliseconds from midnight, January 1, 1970 UTC.
      Returns:
      the maximum start time in milliseconds from midnight, January 1, 1970 UTC

    • getMinStop

      public long getMinStop()
      Returns the minimum stop time in milliseconds from midnight, January 1, 1970 UTC.
      Returns:
      the minimum stop time in milliseconds from midnight, January 1, 1970 UTC

    • getMaxStop

      public long getMaxStop()
      Returns the maximum stop time in milliseconds from midnight, January 1, 1970 UTC.
      Returns:
      the maximum stop time in milliseconds from midnight, January 1, 1970 UTC

    • hashCode

      public int hashCode()
      Returns a hash code value for this object.
      Overrides:
      hashCode in class Object

    • equals

      public boolean equals(Object obj)
      Two instances of this class are equal if both have the same minimum start, the same maximum start, the same minimum stop, and the same maximum stop.
      Overrides:
      equals in class Object

    • toString

      public String toString()
      Returns a string representation of this object.
      Overrides:
      toString in class Object