001    /*
002     * Copyright (C) 2012 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.shell.impl.command.spi;
020    
021    import org.crsh.cli.impl.invocation.InvocationMatch;
022    
023    /**
024     * The real command that will be used in an command pipeline.
025     *
026     * @param <C> the consumed type
027     * @param <P> the the produced type
028     */
029    public abstract class Command<C, P> {
030    
031      /**
032       * @return an invoker for this command.
033       * @throws CommandCreationException
034       */
035      public  abstract CommandInvoker<C, P> getInvoker() throws CommandCreationException;
036    
037      /**
038       * @return the match that created this command
039       */
040      public abstract InvocationMatch<?> getMatch();
041    
042      /**
043       * @return the command produced type
044       */
045      public abstract Class<P> getProducedType();
046    
047      /**
048       * @return the command consumed type
049       */
050      public abstract Class<C> getConsumedType();
051    }