alfresco-community-repo/source/java/org/alfresco/web/config/AspectEvaluator.java

/*
 * Copyright (C) 2005-2010 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
 */
package org.alfresco.web.config;

import java.util.Set;

import org.springframework.extensions.config.evaluator.Evaluator;
import org.alfresco.service.namespace.QName;
import org.alfresco.web.bean.repository.Node;
import org.alfresco.web.bean.repository.Repository;

/**
 * Evaluator that determines whether a given object has a particular aspect applied
 * 
 * @author gavinc
 */
public final class AspectEvaluator implements Evaluator
{
   /**
    * Determines whether the given aspect is applied to the given object
    * 
    * @see org.springframework.extensions.config.evaluator.Evaluator#applies(java.lang.Object, java.lang.String)
    */
   public boolean applies(Object obj, String condition)
   {
      boolean result = false;
      
      if (obj instanceof Node)
      {
         Set aspects = ((Node)obj).getAspects();
         if (aspects != null)
         {
            QName spaceQName = Repository.resolveToQName(condition);
            result = aspects.contains(spaceQName);
         }
      }
      
      return result;
   }
}