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annotate src/org/eclipse/jetty/util/MultiMap.java @ 899:3abf945c33e3
remove _acceptorPriorityOffset
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Fri, 07 Oct 2016 00:02:32 -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; |
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20 |
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21 import java.io.Serializable; |
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22 import java.util.Arrays; |
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23 import java.util.Collection; |
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24 import java.util.HashMap; |
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25 import java.util.List; |
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26 import java.util.Map; |
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27 import java.util.Set; |
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28 import java.util.concurrent.ConcurrentHashMap; |
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29 import java.util.concurrent.ConcurrentMap; |
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30 |
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31 /* ------------------------------------------------------------ */ |
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32 /** A multi valued Map. |
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33 * This Map specializes HashMap and provides methods |
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34 * that operate on multi valued items. |
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35 * <P> |
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36 * Implemented as a map of LazyList values |
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37 * @param <K> The key type of the map. |
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38 * |
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39 * @see LazyList |
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40 * |
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41 */ |
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42 public class MultiMap<K> implements ConcurrentMap<K,Object>, Serializable |
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43 { |
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44 private static final long serialVersionUID = -6878723138353851005L; |
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45 Map<K,Object> _map; |
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46 ConcurrentMap<K, Object> _cmap; |
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47 |
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48 public MultiMap() |
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49 { |
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50 _map=new HashMap<K, Object>(); |
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51 } |
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52 |
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53 public MultiMap(Map<K,Object> map) |
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54 { |
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55 if (map instanceof ConcurrentMap) |
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56 _map=_cmap=new ConcurrentHashMap<K, Object>(map); |
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57 else |
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58 _map=new HashMap<K, Object>(map); |
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59 } |
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60 |
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61 public MultiMap(MultiMap<K> map) |
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62 { |
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63 if (map._cmap!=null) |
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64 _map=_cmap=new ConcurrentHashMap<K, Object>(map._cmap); |
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65 else |
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66 _map=new HashMap<K,Object>(map._map); |
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67 } |
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68 |
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69 public MultiMap(int capacity) |
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70 { |
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71 _map=new HashMap<K, Object>(capacity); |
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72 } |
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73 |
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74 public MultiMap(boolean concurrent) |
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75 { |
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76 if (concurrent) |
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77 _map=_cmap=new ConcurrentHashMap<K, Object>(); |
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78 else |
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79 _map=new HashMap<K, Object>(); |
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80 } |
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81 |
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82 |
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83 /* ------------------------------------------------------------ */ |
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84 /** Get multiple values. |
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85 * Single valued entries are converted to singleton lists. |
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86 * @param name The entry key. |
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87 * @return Unmodifieable List of values. |
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88 */ |
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89 public List getValues(Object name) |
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90 { |
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91 return LazyList.getList(_map.get(name),true); |
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92 } |
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93 |
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94 /* ------------------------------------------------------------ */ |
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95 /** Get a value from a multiple value. |
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96 * If the value is not a multivalue, then index 0 retrieves the |
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97 * value or null. |
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98 * @param name The entry key. |
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99 * @param i Index of element to get. |
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100 * @return Unmodifieable List of values. |
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101 */ |
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102 public Object getValue(Object name,int i) |
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103 { |
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104 Object l=_map.get(name); |
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105 if (i==0 && LazyList.size(l)==0) |
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106 return null; |
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107 return LazyList.get(l,i); |
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108 } |
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109 |
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110 |
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111 /* ------------------------------------------------------------ */ |
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112 /** Get value as String. |
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113 * Single valued items are converted to a String with the toString() |
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114 * Object method. Multi valued entries are converted to a comma separated |
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115 * List. No quoting of commas within values is performed. |
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116 * @param name The entry key. |
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117 * @return String value. |
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118 */ |
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119 public String getString(Object name) |
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120 { |
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121 Object l=_map.get(name); |
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122 switch(LazyList.size(l)) |
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123 { |
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124 case 0: |
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125 return null; |
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126 case 1: |
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127 Object o=LazyList.get(l,0); |
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128 return o==null?null:o.toString(); |
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129 default: |
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130 { |
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131 StringBuilder values=new StringBuilder(128); |
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132 for (int i=0; i<LazyList.size(l); i++) |
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133 { |
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134 Object e=LazyList.get(l,i); |
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135 if (e!=null) |
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136 { |
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137 if (values.length()>0) |
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138 values.append(','); |
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139 values.append(e.toString()); |
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140 } |
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141 } |
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142 return values.toString(); |
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143 } |
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144 } |
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145 } |
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146 |
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147 /* ------------------------------------------------------------ */ |
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148 public Object get(Object name) |
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149 { |
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150 Object l=_map.get(name); |
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151 switch(LazyList.size(l)) |
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152 { |
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153 case 0: |
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154 return null; |
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155 case 1: |
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156 Object o=LazyList.get(l,0); |
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157 return o; |
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158 default: |
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159 return LazyList.getList(l,true); |
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160 } |
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161 } |
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162 |
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163 /* ------------------------------------------------------------ */ |
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164 /** Put and entry into the map. |
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165 * @param name The entry key. |
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166 * @param value The entry value. |
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167 * @return The previous value or null. |
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168 */ |
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169 public Object put(K name, Object value) |
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170 { |
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171 return _map.put(name,LazyList.add(null,value)); |
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172 } |
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173 |
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174 /* ------------------------------------------------------------ */ |
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175 /** Put multi valued entry. |
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176 * @param name The entry key. |
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177 * @param values The List of multiple values. |
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178 * @return The previous value or null. |
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179 */ |
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180 public Object putValues(K name, List<? extends Object> values) |
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181 { |
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182 return _map.put(name,values); |
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183 } |
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184 |
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185 /* ------------------------------------------------------------ */ |
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186 /** Put multi valued entry. |
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187 * @param name The entry key. |
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188 * @param values The String array of multiple values. |
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189 * @return The previous value or null. |
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190 */ |
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191 public Object putValues(K name, String... values) |
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192 { |
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193 Object list=null; |
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194 for (int i=0;i<values.length;i++) |
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195 list=LazyList.add(list,values[i]); |
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196 return _map.put(name,list); |
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197 } |
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198 |
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199 |
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200 /* ------------------------------------------------------------ */ |
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201 /** Add value to multi valued entry. |
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202 * If the entry is single valued, it is converted to the first |
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203 * value of a multi valued entry. |
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204 * @param name The entry key. |
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205 * @param value The entry value. |
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206 */ |
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207 public void add(K name, Object value) |
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208 { |
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209 Object lo = _map.get(name); |
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210 Object ln = LazyList.add(lo,value); |
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211 if (lo!=ln) |
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212 _map.put(name,ln); |
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213 } |
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214 |
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215 /* ------------------------------------------------------------ */ |
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216 /** Add values to multi valued entry. |
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217 * If the entry is single valued, it is converted to the first |
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218 * value of a multi valued entry. |
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219 * @param name The entry key. |
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220 * @param values The List of multiple values. |
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221 */ |
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222 public void addValues(K name, List<? extends Object> values) |
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223 { |
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224 Object lo = _map.get(name); |
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225 Object ln = LazyList.addCollection(lo,values); |
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226 if (lo!=ln) |
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227 _map.put(name,ln); |
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228 } |
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229 |
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230 /* ------------------------------------------------------------ */ |
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231 /** Add values to multi valued entry. |
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232 * If the entry is single valued, it is converted to the first |
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233 * value of a multi valued entry. |
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234 * @param name The entry key. |
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235 * @param values The String array of multiple values. |
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236 */ |
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237 public void addValues(K name, String[] values) |
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238 { |
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239 Object lo = _map.get(name); |
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240 Object ln = LazyList.addCollection(lo,Arrays.asList(values)); |
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241 if (lo!=ln) |
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242 _map.put(name,ln); |
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243 } |
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244 |
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245 /* ------------------------------------------------------------ */ |
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246 /** Remove value. |
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247 * @param name The entry key. |
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248 * @param value The entry value. |
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249 * @return true if it was removed. |
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250 */ |
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251 public boolean removeValue(K name,Object value) |
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252 { |
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253 Object lo = _map.get(name); |
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254 Object ln=lo; |
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255 int s=LazyList.size(lo); |
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256 if (s>0) |
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257 { |
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258 ln=LazyList.remove(lo,value); |
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259 if (ln==null) |
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260 _map.remove(name); |
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261 else |
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262 _map.put(name, ln); |
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263 } |
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264 return LazyList.size(ln)!=s; |
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265 } |
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266 |
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267 |
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268 /* ------------------------------------------------------------ */ |
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269 /** Put all contents of map. |
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270 * @param m Map |
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271 */ |
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272 public void putAll(Map<? extends K, ? extends Object> m) |
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273 { |
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274 boolean multi = (m instanceof MultiMap); |
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275 |
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276 if (multi) |
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277 { |
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278 for (Map.Entry<? extends K, ? extends Object> entry : m.entrySet()) |
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279 { |
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280 _map.put(entry.getKey(),LazyList.clone(entry.getValue())); |
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281 } |
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282 } |
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283 else |
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284 { |
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285 _map.putAll(m); |
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286 } |
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287 } |
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288 |
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289 /* ------------------------------------------------------------ */ |
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290 /** |
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291 * @return Map of String arrays |
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292 */ |
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293 public Map<K,String[]> toStringArrayMap() |
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294 { |
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295 HashMap<K,String[]> map = new HashMap<K,String[]>(_map.size()*3/2) |
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296 { |
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297 public String toString() |
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298 { |
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299 StringBuilder b=new StringBuilder(); |
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300 b.append('{'); |
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301 for (K k:keySet()) |
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302 { |
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303 if(b.length()>1) |
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304 b.append(','); |
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305 b.append(k); |
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306 b.append('='); |
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307 b.append(Arrays.asList(get(k))); |
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308 } |
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309 |
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310 b.append('}'); |
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311 return b.toString(); |
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312 } |
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313 }; |
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314 |
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315 for(Map.Entry<K,Object> entry: _map.entrySet()) |
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316 { |
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317 String[] a = LazyList.toStringArray(entry.getValue()); |
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318 map.put(entry.getKey(),a); |
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319 } |
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320 return map; |
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321 } |
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322 |
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323 @Override |
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324 public String toString() |
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325 { |
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326 return _cmap==null?_map.toString():_cmap.toString(); |
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327 } |
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328 |
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329 public void clear() |
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330 { |
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331 _map.clear(); |
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332 } |
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333 |
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334 public boolean containsKey(Object key) |
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335 { |
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336 return _map.containsKey(key); |
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337 } |
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338 |
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339 public boolean containsValue(Object value) |
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340 { |
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341 return _map.containsValue(value); |
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342 } |
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343 |
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344 public Set<Entry<K, Object>> entrySet() |
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345 { |
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346 return _map.entrySet(); |
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347 } |
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348 |
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349 @Override |
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350 public boolean equals(Object o) |
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351 { |
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352 return _map.equals(o); |
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353 } |
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354 |
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355 @Override |
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356 public int hashCode() |
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357 { |
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358 return _map.hashCode(); |
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359 } |
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360 |
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361 public boolean isEmpty() |
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362 { |
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363 return _map.isEmpty(); |
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364 } |
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365 |
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366 public Set<K> keySet() |
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367 { |
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368 return _map.keySet(); |
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369 } |
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370 |
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371 public Object remove(Object key) |
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372 { |
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373 return _map.remove(key); |
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374 } |
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375 |
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376 public int size() |
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377 { |
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378 return _map.size(); |
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379 } |
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380 |
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381 public Collection<Object> values() |
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382 { |
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383 return _map.values(); |
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384 } |
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385 |
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386 |
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387 |
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388 public Object putIfAbsent(K key, Object value) |
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389 { |
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390 if (_cmap==null) |
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391 throw new UnsupportedOperationException(); |
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392 return _cmap.putIfAbsent(key,value); |
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393 } |
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394 |
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395 public boolean remove(Object key, Object value) |
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396 { |
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397 if (_cmap==null) |
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398 throw new UnsupportedOperationException(); |
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399 return _cmap.remove(key,value); |
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400 } |
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401 |
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402 public boolean replace(K key, Object oldValue, Object newValue) |
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403 { |
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404 if (_cmap==null) |
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405 throw new UnsupportedOperationException(); |
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406 return _cmap.replace(key,oldValue,newValue); |
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407 } |
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408 |
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409 public Object replace(K key, Object value) |
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410 { |
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411 if (_cmap==null) |
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412 throw new UnsupportedOperationException(); |
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413 return _cmap.replace(key,value); |
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414 } |
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415 } |