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annotate src/org/eclipse/jetty/util/ConcurrentHashSet.java @ 823:9d4eab790cd2

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remove ServletRequestHttpWrapper and ServletResponseHttpWrapper
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 14 Sep 2016 01:05:27 -0600
parents 3428c60d7cfc
children
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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;
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20
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21 import java.util.AbstractSet;
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22 import java.util.Collection;
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23 import java.util.Iterator;
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24 import java.util.Map;
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25 import java.util.Set;
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26 import java.util.concurrent.ConcurrentHashMap;
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27
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28 public class ConcurrentHashSet<E> extends AbstractSet<E> implements Set<E>
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29 {
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30 private final Map<E, Boolean> _map = new ConcurrentHashMap<E, Boolean>();
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31 private transient Set<E> _keys = _map.keySet();
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32
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33 public ConcurrentHashSet()
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34 {
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35 }
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36
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37 @Override
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38 public boolean add(E e)
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39 {
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40 return _map.put(e,Boolean.TRUE) == null;
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41 }
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42
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43 @Override
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44 public void clear()
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45 {
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46 _map.clear();
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47 }
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48
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49 @Override
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50 public boolean contains(Object o)
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51 {
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52 return _map.containsKey(o);
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53 }
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54
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55 @Override
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56 public boolean containsAll(Collection<?> c)
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57 {
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58 return _keys.containsAll(c);
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59 }
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60
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61 @Override
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62 public boolean equals(Object o)
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63 {
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64 return o == this || _keys.equals(o);
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65 }
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66
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67 @Override
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68 public int hashCode()
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69 {
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70 return _keys.hashCode();
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71 }
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72
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73 @Override
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74 public boolean isEmpty()
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75 {
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76 return _map.isEmpty();
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77 }
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78
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79 @Override
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80 public Iterator<E> iterator()
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81 {
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82 return _keys.iterator();
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83 }
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84
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85 @Override
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86 public boolean remove(Object o)
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87 {
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88 return _map.remove(o) != null;
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89 }
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90
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91 @Override
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92 public boolean removeAll(Collection<?> c)
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93 {
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94 return _keys.removeAll(c);
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95 }
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96
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97 @Override
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98 public boolean retainAll(Collection<?> c)
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99 {
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100 return _keys.retainAll(c);
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101 }
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102
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103 @Override
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104 public int size()
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105 {
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106 return _map.size();
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107 }
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108
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109 @Override
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110 public Object[] toArray()
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111 {
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112 return _keys.toArray();
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113 }
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114
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115 @Override
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116 public <T> T[] toArray(T[] a)
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117 {
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118 return _keys.toArray(a);
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119 }
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120
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121 @Override
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122 public String toString()
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123 {
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124 return _keys.toString();
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125 }
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126 }