/* DomainCombiner.java -- Combines ProtectionDomains
   Copyright (C) 1999, 2002 Free Software Foundation, Inc.

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package java.security;

/**
 * A public interface used to combine two ProtectionDomains in a new
 * ProtectionDomain and update the current Protection Domains
 * associated with the current AccessControlContext.
 *
 * It can add, subtract, or update ProtectionDomains or possibly
 * remove duplicates or any possible complex action but just not add
 * ones that do not already exist in either array.
 *
 * @author Mark Benvenuto
 * @see AccessControlContext
 * @see AccessController
 * @since 1.3
 * @status updated to 1.4
 */
public interface DomainCombiner
{
  /**
   * Combines the current ProtectionDomains of the Thread with new
   * ProtectionDomains.
   *
   * @param currentDomains - the ProtectionDomains for the current thread.
   * @param assignedDomains - ProtectionsDomains to add
   * @return a new array of all the ProtectionDomains
   */
  ProtectionDomain[] combine(ProtectionDomain[] currentDomains,
                             ProtectionDomain[] assignedDomains);
} // interface DomainCombiner