/*
 * 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.repo.action.evaluator;

import java.util.List;

import org.alfresco.repo.action.ParameterDefinitionImpl;
import org.alfresco.service.cmr.action.ActionCondition;
import org.alfresco.service.cmr.action.ParameterDefinition;
import org.alfresco.service.cmr.dictionary.DataTypeDefinition;
import org.alfresco.service.cmr.repository.NodeRef;
import org.alfresco.service.cmr.repository.NodeService;
import org.alfresco.service.namespace.QName;

/**
 * Has aspect evaluator
 * 
 * @author Roy Wetherall
 */
public class HasAspectEvaluator extends ActionConditionEvaluatorAbstractBase
{
	/**
	 * Evaluator constants
	 */
	public static final String NAME = "has-aspect";
    public static final String PARAM_ASPECT = "aspect";
	
    /**
     * The node service
     */
    private NodeService nodeService;
    
    /**
     * Set node service
     * 
     * @param nodeService  the node service
     */
    public void setNodeService(NodeService nodeService) 
    {
        this.nodeService = nodeService;
    }
    
    /**
     * @see org.alfresco.repo.action.evaluator.ActionConditionEvaluatorAbstractBase#evaluateImpl(org.alfresco.service.cmr.action.ActionCondition, org.alfresco.service.cmr.repository.NodeRef)
     */
    public boolean evaluateImpl(ActionCondition ruleCondition, NodeRef actionedUponNodeRef)
    {
        boolean result = false;
        
        if (this.nodeService.exists(actionedUponNodeRef) == true)
        {
            if (this.nodeService.hasAspect(actionedUponNodeRef, (QName)ruleCondition.getParameterValue(PARAM_ASPECT)) == true)
            {
                result = true;
            }
        }
        
        return result;
    }

    /**
     * @see org.alfresco.repo.action.ParameterizedItemAbstractBase#addParameterDefinitions(java.util.List)
     */
	@Override
	protected void addParameterDefinitions(List<ParameterDefinition> paramList) 
	{
        paramList.add(new ParameterDefinitionImpl(PARAM_ASPECT, DataTypeDefinition.QNAME, true, getParamDisplayLabel(PARAM_ASPECT), false, "ac-aspects"));
	}

}
