/*

  *   SONEWS News Server

  *   see AUTHORS for the list of contributors

  *

  *   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 3 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, see <http://www.gnu.org/licenses/>.

  */

 package org.sonews.daemon.command;

 import java.io.IOException;

 import org.sonews.daemon.NNTPConnection;

 import org.sonews.storage.StorageBackendException;

 /**

  * Interface for pluggable NNTP commands handling classes.

  * @author Christian Lins

  * @since sonews/0.6.0

  */

 public interface Command

 {

   /**

    * @return true if this instance can be reused.

    */

   boolean hasFinished();

   /**

    * Returns capability string that is implied by this command class.

    * MAY return null if the command is required by the NNTP standard.

    */

   String impliedCapability();

   boolean isStateful();

   String[] getSupportedCommandStrings();

   void processLine(NNTPConnection conn, String line, byte[] rawLine)

     throws IOException, StorageBackendException;

 }