/*
 * Copyright (C) 2005 Alfresco, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program 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 General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

 * As a special exception to the terms and conditions of version 2.0 of 
 * the GPL, you may redistribute this Program in connection with Free/Libre 
 * and Open Source Software ("FLOSS") applications as described in Alfresco's 
 * FLOSS exception.  You should have recieved a copy of the text describing 
 * the FLOSS exception, and it is also available here: 
 * http://www.alfresco.com/legal/licensing"
 */
package org.alfresco.repo.search;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;

import org.alfresco.service.cmr.repository.ChildAssociationRef;
import org.alfresco.service.cmr.repository.NodeRef;
import org.alfresco.service.cmr.repository.Path;
import org.alfresco.service.cmr.search.LimitBy;
import org.alfresco.service.cmr.search.PermissionEvaluationMode;
import org.alfresco.service.cmr.search.ResultSet;
import org.alfresco.service.cmr.search.ResultSetMetaData;
import org.alfresco.service.cmr.search.ResultSetRow;
import org.alfresco.service.cmr.search.SearchParameters;

public class EmptyResultSet implements ResultSet
{

    public EmptyResultSet()
    {
        super();
    }

    public Path[] getPropertyPaths()
    {
       return new Path[]{};
    }

    public int length()
    {
        return 0;
    }

    public NodeRef getNodeRef(int n)
    {
        throw new UnsupportedOperationException();
    }

    public float getScore(int n)
    {
        throw new UnsupportedOperationException();
    }

    public Iterator<ResultSetRow> iterator()
    {
        ArrayList<ResultSetRow> dummy = new ArrayList<ResultSetRow>(0);
        return dummy.iterator();
    }

    public void close()
    {

    }

    public ResultSetRow getRow(int i)
    {
        // TODO Auto-generated method stub
        throw new UnsupportedOperationException();
    }

    public List<NodeRef> getNodeRefs()
    {
        return Collections.<NodeRef>emptyList();
    }

    public List<ChildAssociationRef> getChildAssocRefs()
    {
        return Collections.<ChildAssociationRef>emptyList();
    }

    public ChildAssociationRef getChildAssocRef(int n)
    {
        // TODO Auto-generated method stub
        throw new UnsupportedOperationException();
    }

    public ResultSetMetaData getResultSetMetaData()
    {
        return new SimpleResultSetMetaData(LimitBy.UNLIMITED, PermissionEvaluationMode.EAGER, new SearchParameters());
    }
}