/**
    * Copyright 2005-2011 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.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.krms.framework.engine;
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.kuali.rice.krms.api.engine.EngineResults;
  import org.kuali.rice.krms.api.engine.ResultEvent;
  
  
  public class EngineResultsImpl implements EngineResults {
  	
  	private List<ResultEvent> results = new ArrayList<ResultEvent>();
  	private Map<String, Object> attributes = new HashMap<String, Object>();
  	
  	@Override
  	public void addResult(ResultEvent result) {
  		results.add(result);
  	}
  
  	@Override
  	public List<ResultEvent> getAllResults() {		
  		return new ArrayList<ResultEvent>(results); // shallow copy should be defensive enough
  	}
  
  	@Override
  	public ResultEvent getResultEvent(int index) {
  		// TODO Auto-generated method stub
  		return null;
  	}
  
  	@Override
  	public List<ResultEvent> getResultsOfType(String type) {
  		// TODO Auto-generated method stub
  		ArrayList<ResultEvent> newList = new ArrayList<ResultEvent>();
  		if (type == null) return newList;
  		for (int i=0; i<results.size(); i++){
  			if (type.equalsIgnoreCase(results.get(i).getType())){
  				newList.add(results.get(i));
  			}
  		}
  		return newList;
  	}
  	
  	/**
  	 * @see org.kuali.rice.krms.api.engine.EngineResults#getAttribute(java.lang.String)
  	 */
  	@Override
  	public Object getAttribute(String key) {
  	    return attributes.get(key);
  	}
  	
  	/**
  	 * @see org.kuali.rice.krms.api.engine.EngineResults#setAttribute(java.lang.String, java.lang.Object)
  	 */
  	@Override
  	public void setAttribute(String key, Object attr) {
  	    attributes.put(key, attr);
  	}
  	
  }