content: /*
   * PlatformFilter.java May 2006
   *
   * Copyright (C) 2006, Niall Gallagher <niallg@users.sf.net>
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 
   * implied. See the License for the specific language governing 
   * permissions and limitations under the License.
   */
  
  package com.aliyun.odps.simpleframework.xml.filter;
  
  import java.util.Map;
  
  /**
   * The <code>PlatformFilter</code> object makes use of all filter
   * types this resolves user specified properties first, followed
   * by system properties, and finally environment variables. This
   * filter will be the default filter used by most applications as
   * it can make use of all values within the application platform.
   * 
   * @author Niall Gallagher 
   */
  public class PlatformFilter extends StackFilter {
  
     /**
      * Constructor for the <code>PlatformFilter</code> object. This
      * adds a filter which can be used to resolve environment 
      * variables followed by one that can be used to resolve system
      * properties and finally one to resolve user specified values.
      */
     public PlatformFilter() {
        this(null);
     }
     
     /**
      * Constructor for the <code>PlatformFilter</code> object. This
      * adds a filter which can be used to resolve environment 
      * variables followed by one that can be used to resolve system
      * properties and finally one to resolve user specified values.
      * 
      * @param map this is a map contain the user mappings
      */
     public PlatformFilter(Map map) {
        this.push(new EnvironmentFilter());
        this.push(new SystemFilter());
        this.push(new MapFilter(map));      
     }        
  }
  