/*
 * 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.filesys.repo;

import java.io.IOException;

import org.alfresco.filesys.repo.rules.Command;
import org.alfresco.jlan.server.SrvSession;
import org.alfresco.jlan.server.filesys.TreeConnection;

/**
 * The Command Executor - executes commands!
 */
public interface CommandExecutor 
{
    /**
     * Execute the command.
     * @param command
     * 
     * @return an object for return or null if there is no return value. 
     * @throws IOException 
     */
    public Object execute(SrvSession sess, TreeConnection tree, Command command) throws IOException;
}