/**
    * 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.kew.actionitem;
  
  import java.util.Comparator;
  
  import org.kuali.rice.kew.actionrequest.ActionRequestValue;
  import org.kuali.rice.kew.api.action.ActionItemContract;
  import org.kuali.rice.kew.api.action.RecipientType;
  
  /**
   * Compares an action item to another action item.
   * 
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class ActionItemComparator implements Comparator {
  
  	public int compare(Object object1, Object object2) throws ClassCastException {
  		ActionItemContract actionItem1 = (ActionItemContract)object1;
  		ActionItemContract actionItem2 = (ActionItemContract)object2;
  		int actionCodeValue = ActionRequestValue.compareActionCode(actionItem1.getActionRequestCd(), actionItem2.getActionRequestCd(), true);
  		if (actionCodeValue != 0) {
  			return actionCodeValue;
  		}
  		int recipientTypeValue = ActionRequestValue.compareRecipientType(getRecipientTypeCode(actionItem1), getRecipientTypeCode(actionItem2));
  		if (recipientTypeValue != 0) {
  			return recipientTypeValue;
  		}
  		return ActionRequestValue.compareDelegationType(actionItem1.getDelegationType(), actionItem2.getDelegationType());
  	}
  
      private String getRecipientTypeCode(Object object) {
          ActionItemContract actionItem = (ActionItemContract)object;
          String recipientTypeCode = RecipientType.PRINCIPAL.getCode();
          if (actionItem.getRoleName() != null) {
              recipientTypeCode = RecipientType.ROLE.getCode();
          }
          if (actionItem.getGroupId() != null) {
              recipientTypeCode = RecipientType.GROUP.getCode();
          }
          return recipientTypeCode;
      }
  
  }