absolutevalidityperiod.java

一个完整的XACML工程,学习XACML技术的好例子!

/*
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package issrg.pba.rbac;

/**
 * This class represents a validity period, specified as two margins in time: the
 * notBefore and notAfter times. The times are absolute and are input as java.util.Date
 * objects. The notAfter can be set to time before notBefore, but such a validity
 * period will mean "invalid time" and cause the credential to be not accepted.
 *
 * @author A.Otenko
 */

public class AbsoluteValidityPeriod extends DefaultValidityPeriodBehaviour {

  protected java.util.Date notBefore;
  protected java.util.Date notAfter;

  /**
   * This constructor creates an infinite validity period. This is equivalent
   * to calling AbsoluteValidityPeriod(null, null);
   */
  public AbsoluteValidityPeriod() {
    this(null, null);
  }

  /**
   * This constructor creates a validity period with the margins specified. If
   * a margin is null, the period is infinite in that direction.
   *
   * @param notBefore is the date and time when the period starts; if null, it
   *    existed forever
   * @param notAfter is the date and time when the period ends; if null, it lasts
   *    forever
   */
  public AbsoluteValidityPeriod(java.util.Date notBefore, java.util.Date notAfter){
    this.notBefore = notBefore;
    this.notAfter = notAfter;
  }

  /**
   * This method returns the Date of NotBefore, as specified in the constructor.
   * Can be null, if the validity period exists "since time immemorial"
   */
  public java.util.Date getNotBefore(){
    return notBefore;
  }

  /**
   * This method returns the Date of NotAfter, as specified in the constructor.
   * Can be null, if the validity period lasts forever.
   */
  public java.util.Date getNotAfter(){
    return notAfter;
  }

  public Object clone(){
    return new AbsoluteValidityPeriod(notBefore, notAfter);
  }

  public String toString(){
    return "("+((notBefore==null)?"-oo":notBefore.toString())+"; "+((notAfter==null)?"+oo":notAfter.toString())+")";
  }
}