irbacuser.java

这是一个基于角色的访问控制程序

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 * The Apache Software License, Version 1.1
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package gov.nist.security.rbac;

import gov.nist.security.rbac.*;
/**
 * User which acquires permissions by being members of roles.
 */
public interface IRbacUser {
  /** A null set of RBAC user. */
  public static final IRbacUser[] ZERO_USER = new IRbacUser[0];
  /** A user with no role. */
  public static final IRbacUser NO_USER = new AbstractRbacUser();
  /**
   * Adds the given role to this user.
   * The limit of the number of users that can be assigned to the role
   * should be checked before calling this method.
   * @throws RbacSecurityViolation if the limit of the number of users
   * that can be assigned to the given role is exceeded.
   */
  public boolean addRole(IRole role) throws RbacSecurityViolation;
  /**
   * Removes the given role from this user.
   */
  public boolean dropRole(IRole role);
  /**
   * Returns the current set of roles that have been assigned to this user.
   * (A core RBAC feature.)
   */
  public IRole[] getRoles();
  /** Returns the set of permissions a this user gets thru his assgined roles. */
  public IPermission[] getPermissions();
}