Mercurial > hg > Members > shoshi > TreeCMSv2

annotate src/treecms/tree/util/NodeChildrenImpl.java @ 17:168deb591f21

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commit
author shoshi
date Tue, 24 May 2011 00:33:12 +0900
parents bb9760760744
children 084de6909451
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1 package treecms.tree.util;
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2
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3 import java.util.ArrayList;
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4 import java.util.Collections;
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5 import java.util.HashSet;
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6 import java.util.Set;
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7 import java.util.List;
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8 import treecms.api.Node;
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9 import treecms.api.NodeChildren;
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10
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11 /**
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12 * 子供ノードを格納するため専用のリストです．java.util.List<T>は継承しておりません．
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13 * 子供ノードのリストには　リスト内に同じUUIDを持つNodeが存在　してはいけません．
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14 * @author shoshi
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15 */
16
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16 public class NodeChildrenImpl<T extends Node<T>> implements NodeChildren<T>
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17 {
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18 private List<T> m_list;
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19 private Set<String> m_set;
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20
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21 public NodeChildrenImpl()
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22 {
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23 m_list = new ArrayList<T>();
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24 m_set = new HashSet<String>();
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25 }
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26
17
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27 public NodeChildrenImpl(T... _args)
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28 {
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29 this();
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30 for(T i : _args){
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31 if(!add(i)){
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32 throw new IllegalArgumentException("duplicate Node UUID at "+i.getID().getUUID());
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33 }
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34 }
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35 }
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36
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37 public NodeChildrenImpl(NodeChildren<T> _list)
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38 {
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39 this();
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40
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41 if(_list != null){
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42 addAll(_list);
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43 }
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44 }
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45
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46 public List<T> getList()
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47 {
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48 return Collections.unmodifiableList(m_list);
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49 }
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50
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51 public Set<String> getUUIDSet()
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52 {
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53 return Collections.unmodifiableSet(m_set);
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54 }
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55
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56 @Override
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57 public T replace(T _newChild)
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58 {
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59 String uuid = _newChild.getID().getUUID();
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60 int size = m_list.size();
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61 for(int i = 0;i < size;i ++){
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62 T n = m_list.get(i);
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63 if(uuid.equals(n.getID().getUUID())){
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64 //_newChildと同一なUUIDを見つけた
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65 return m_list.set(i,_newChild);
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66 }
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67 }
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68 //見つからなかった
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69 return null;
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70 }
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71
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72 /**
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73 * このリストに新しく子供を追加します．
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74 * @param _n
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75 * @return 追加に成功した場合true
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76 */
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77 public boolean add(T _n)
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78 {
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79 if(m_set.contains(_n.getID().getUUID())){
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80 return false;
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81 }
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82
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83 m_set.add(_n.getID().getUUID());
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84 m_list.add(_n);
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85 return true;
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86 }
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87
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88 /**
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89 * _listに含まれている子供がすべてこのリストに含まれない場合にのみ、要素をすべて追加します。
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90 * @param _list
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91 * @return 追加に成功した場合true
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92 */
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93 public boolean addAll(NodeChildren<T> _list)
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94 {
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95 if(Collections.disjoint(m_set,_list.getUUIDSet())){
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96 //共通要素がない
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97 m_set.addAll(_list.getUUIDSet());
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98 m_list.addAll(_list.getList());
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99 return true;
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100 }
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101 return false;
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102 }
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103
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104 /**
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105 * 指定されたNodeID
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106 * @param _id
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107 * @return 子供ノード
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108 */
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109 public T get(String _uuid)
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110 {
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111 for(T n : m_list){
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112 String uuid = n.getID().getUUID();
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113 if(uuid.equals(_uuid)){
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114 return n;
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115 }
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116 }
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117
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118 return null;
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119 }
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120
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121 /**
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122 * 指定された_indexの場所に位置する子供を削除します
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123 * @param _index
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124 * @return 消される子供ノード
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125 */
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126 public T get(int _index)
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127 {
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128 return m_list.get(_index);
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129 }
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130
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131 /**
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132 * 指定されたUUIDを持つ子どもを削除します
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133 * @param _id
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134 * @return 削除される子供ノード
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135 */
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136 public T remove(String _uuid)
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137 {
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138 int size = m_list.size();
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139
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140 for(int i = 0;i < size;i ++){
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141 String uuid = m_list.get(i).getID().getUUID();
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142 if(uuid.equals(_uuid)){
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143 //NodeIDのUUIDが一致した
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144 return m_list.remove(i);
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145 }
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146 }
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147
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148 return null;
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149 }
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150
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151 /**
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152 * 指定された場所の子供ノードを削除します
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153 * @param _index
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154 * @return 削除された子供ノード
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155 */
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156 public T remove(int _index)
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157 {
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158 return m_list.remove(_index);
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159 }
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160
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161 /**
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162 * このリストに指定されたUUIDを持つNodeがあるか確認します
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163 * @param _id
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164 * @return 存在する場合true
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165 */
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166 public boolean contains(String _uuid)
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167 {
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168 return m_set.contains(_uuid);
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169 }
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170
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171 /**
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172 * 指定された二つのUUID(_uuid1,_uuid2)がリスト上に存在する場合、その二つの順番を入れ替えます
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173 * @param _uuid1 String
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174 * @param _uuid2 String
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175 * @return 成功した場合はtrue,NodeIDが見つからなかった場合はfalse
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176 */
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177 public boolean swap(String _uuid1,String _uuid2)
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178 {
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179 /*
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180 * 二つのNodeIDの位置を求める
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181 */
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182 int index1 = -1;
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183 int index2 = -1;
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184
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185 int size = m_list.size();
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186 for(int i = 0;i < size && (index1 == -1 || index2 == 1);i ++){
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187 String uuid = m_list.get(i).getID().getUUID();
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188 if(uuid.equals(_uuid1)){
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189 index1 = i;
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190 continue;
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191 }
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192
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193 if(uuid.equals(_uuid2)){
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194 index2 = i;
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195 continue;
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196 }
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197 }
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198
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199 /*
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200 * Collection.swapを使って入れ替える
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201 */
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202 if(index1 != -1 && index2 != -1){
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203 Collections.swap(m_list,index1,index2);
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204 return true;
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205 }
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206
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207 //NodeIDがリスト上になかった
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208 return false;
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209 }
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210
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211 /**
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212 * 子供ノードのリストをクリアします
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213 */
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214 public void clearChildren()
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215 {
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216 m_set.clear();
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217 m_list.clear();
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218 }
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219
16
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220 @SuppressWarnings("unchecked")
14
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221 @Override
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222 public boolean equals(Object _o)
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223 {
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224 NodeChildrenImpl<T> list = (NodeChildrenImpl<T>)_o;
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225 return m_list.equals(list.m_list);
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226 }
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227
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228 @Override
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229 public int hashCode()
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230 {
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231 int result = 17;
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232 result = 37*result + m_list.hashCode();
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233 result = 37*result + m_set.hashCode();
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234 return result;
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235 }
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236 }