001    /*
002     * Copyright (C) 2003-2009 eXo Platform SAS.
003     *
004     * This is free software; you can redistribute it and/or modify it
005     * under the terms of the GNU Lesser General Public License as
006     * published by the Free Software Foundation; either version 2.1 of
007     * the License, or (at your option) any later version.
008     *
009     * This software is distributed in the hope that it will be useful,
010     * but WITHOUT ANY WARRANTY; without even the implied warranty of
011     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012     * Lesser General Public License for more details.
013     *
014     * You should have received a copy of the GNU Lesser General Public
015     * License along with this software; if not, write to the Free
016     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018     */
019    package org.crsh.command;
020    
021    /**
022     * The base interface for a shell command.
023     *
024     * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
025     * @version $Revision$
026     * @param <C> the consumed type
027     * @param <P> the produced type
028     */
029    public interface CommandInvoker<C, P> {
030    
031      /**
032       * Invoke a command
033       *
034       * @param context the command execution context
035       * @throws ScriptException any script exception
036       */
037      void invoke(InvocationContext<C, P> context) throws ScriptException;
038    
039      /**
040       * Returns the class of the produced type.
041       *
042       * @return the produced type
043       */
044      Class<P> getProducedType();
045    
046      /**
047       * Returns the class of the consumed type.
048       *
049       * @return the consumed type
050       */
051      Class<C> getConsumedType();
052    
053    }