/*

  * Copyright 2011 The Kuali Foundation Licensed under the Educational Community

  * License, Version 1.0 (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.opensource.org/licenses/ecl1.php 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 org.kuali.rice.kns.uif.util;

 import java.util.HashMap;

 import java.util.Set;

 /**

  * Map implementation takes a <code>Set</code> of Strings and converts to Map

  * where the string is the map key and value is the Boolean true, convenience

  * collection for expression language

  * 

  * @author Kuali Rice Team (rice.collab@kuali.org)

  */

 public class BooleanMap extends HashMap<String, Boolean> {

     private static final long serialVersionUID = 4042557657401395547L;

     public BooleanMap(Set<String> keys) {

         super();

         for (String key : keys) {

             this.put(key, Boolean.TRUE);

         }

     }

     /**

      * Overrides the get method to return Boolean false if the key does not

      * exist in the Map

      * 

      * @see java.util.HashMap#get(java.lang.Object)

      */

     @Override

     public Boolean get(Object key) {

         if (super.containsKey(key)) {

             return super.get(key);

         }

         return Boolean.FALSE;

     }

 }