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    1   /*
    2    *  Copyright (c) 1998-2001, The University of Sheffield.
    3    *
    4    *  This file is part of GATE (see http://gate.ac.uk/), and is free
    5    *  software, licenced under the GNU Library General Public License,
    6    *  Version 2, June 1991 (in the distribution as file licence.html,
    7    *  and also available at http://gate.ac.uk/gate/licence.html).
    8    *
    9    *  Valentin Tablan 21 Sep 2001
    10   *
    11   *  $Id: Executable.java,v 1.1 2001/09/26 18:23:05 valyt Exp $
    12   */
    13  package gate;
    14
    15  import gate.util.*;
    16  import gate.creole.*;
    17
    18  /**
    19   * Describes entities that can be executed such as {@link ProcessingResource}s
    20   * or {@link Controller}s.
    21   */
    22  public interface Executable {
    23
    24    /**
    25     * Starts the execution of this executable
    26     */
    27    public void execute() throws ExecutionException;
    28
    29    /**
    30     * Notifies this executable that it should stop its execution as soon as
    31     * possible.
    32     */
    33    public void interrupt();
    34
    35    /**
    36     * Returns true if this executable has been interrupted via the
    37     * {@link interrupt()} method since the last time its {@link execute()} method
    38     * was called
    39     */
    40    public boolean isInterrupted();
    41  }

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