environment.java

一个完整的XACML工程,学习XACML技术的好例子!

/*
* Copyright (c) 2000-2005, University of Salford
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without 
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*
* Redistributions of source code must retain the above copyright notice, this 
* list of conditions and the following disclaimer.
* 
* Redistributions in binary form must reproduce the above copyright notice, 
* this list of conditions and the following disclaimer in the documentation 
* and/or other materials provided with the distribution. 
*
* Neither the name of the University of Salford nor the names of its 
* contributors may be used to endorse or promote products derived from this 
* software without specific prior written permission. 
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
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package issrg.pba.rbac.xmlpolicy.ifstatement;

/**
 * This class holds the execution environment parameters. They are the 
 * arguments to
 * the action and other environmental variables, as defined by the AEF.
 */
public class Environment {
  protected java.util.Map args;
  protected java.util.Map env;

  protected Environment() {
  }

  /**
   * This constructor builds an Environment from the given map of arguments
   * and a map of environmental variables. Both maps have the variable names
   * as keys and their string values as values. The values are then decoded 
   * using Types.construct() method.
   *
   * @param arguments - the arguments of the action; if null, no arguments of
   *   the action are present
   * @param environment - the environment; if null, the environment is assumed
   *   to be empty
   *
   * @see Types#construct
   */
  public Environment(java.util.Map arguments, java.util.Map environment){
    args=arguments==null?new java.util.Hashtable():arguments;
    env=environment==null?new java.util.Hashtable():environment;
  }

  /**
   * This method returns a map of action arguments, indexed by their name, as
   * defined by the ActionPolicy.
   *
   * @return java.util.Map of the action arguments; never null, but may contain
   *   no entries
   */
  public java.util.Map getArgs(){
    return args;
  }

  /**
   * This method returns a map of environmental parameters, indexed by their 
   * name, as defined by the AEF.
   *
   * @return java.util.Map of the environmental parameters; never null, but
   *   may contain no entries
   */
  public java.util.Map getEnv(){
    return env;
  }
}