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annotate src/org/eclipse/jetty/util/component/LifeCycle.java @ 1019:f126d30e04a4

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start replacing BufferCache with StringCache
author Franklin Schmidt <fschmidt@gmail.com>
date Mon, 31 Oct 2016 03:33:42 -0600
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1 //
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2 // ========================================================================
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3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
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4 // ------------------------------------------------------------------------
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5 // All rights reserved. This program and the accompanying materials
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6 // are made available under the terms of the Eclipse Public License v1.0
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7 // and Apache License v2.0 which accompanies this distribution.
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8 //
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9 // The Eclipse Public License is available at
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10 // http://www.eclipse.org/legal/epl-v10.html
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11 //
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12 // The Apache License v2.0 is available at
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13 // http://www.opensource.org/licenses/apache2.0.php
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14 //
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15 // You may elect to redistribute this code under either of these licenses.
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16 // ========================================================================
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17 //
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18
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19 package org.eclipse.jetty.util.component;
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20
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21 import java.util.EventListener;
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22
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23 /* ------------------------------------------------------------ */
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24 /**
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25 * The lifecycle interface for generic components.
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26 * <br />
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27 * Classes implementing this interface have a defined life cycle
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28 * defined by the methods of this interface.
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29 *
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30 *
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31 */
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32 public interface LifeCycle
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33 {
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34 /* ------------------------------------------------------------ */
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35 /**
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36 * Starts the component.
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37 * @throws Exception If the component fails to start
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38 * @see #isStarted()
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39 * @see #stop()
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40 * @see #isFailed()
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41 */
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42 public void start()
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43 throws Exception;
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44
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45 /* ------------------------------------------------------------ */
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46 /**
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47 * Stops the component.
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48 * The component may wait for current activities to complete
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49 * normally, but it can be interrupted.
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50 * @exception Exception If the component fails to stop
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51 * @see #isStopped()
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52 * @see #start()
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53 * @see #isFailed()
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54 */
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55 public void stop()
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56 throws Exception;
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57
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58 /* ------------------------------------------------------------ */
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59 /**
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60 * @return true if the component is starting or has been started.
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61 */
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62 public boolean isRunning();
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63
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64 /* ------------------------------------------------------------ */
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65 /**
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66 * @return true if the component has been started.
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67 * @see #start()
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68 * @see #isStarting()
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69 */
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70 public boolean isStarted();
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71
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72 /* ------------------------------------------------------------ */
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73 /**
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74 * @return true if the component is starting.
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75 * @see #isStarted()
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76 */
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77 public boolean isStarting();
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78
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79 /* ------------------------------------------------------------ */
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80 /**
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81 * @return true if the component is stopping.
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82 * @see #isStopped()
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83 */
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84 public boolean isStopping();
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85
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86 /* ------------------------------------------------------------ */
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87 /**
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88 * @return true if the component has been stopped.
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89 * @see #stop()
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90 * @see #isStopping()
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91 */
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92 public boolean isStopped();
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93
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94 /* ------------------------------------------------------------ */
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95 /**
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96 * @return true if the component has failed to start or has failed to stop.
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97 */
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98 public boolean isFailed();
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99
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100 }