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1 package jp.ac.u_ryukyu.ie.cr.jungle.transaction;
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2
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3 import jp.ac.u_ryukyu.ie.cr.jungle.JungleTreeEditor;
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4 import jp.ac.u_ryukyu.ie.cr.jungle.store.NodePath;
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5 import jp.ac.u_ryukyu.ie.cr.jungle.store.TreeEditor;
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6 import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.DefaultNodePath;
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7 import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.TreeNode;
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8 import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.logger.DefaultTreeOperationLog;
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9 import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.logger.LoggingNode;
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10 import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.logger.OperationLog;
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11 import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.logger.TreeOperationLog;
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12 import jp.ac.u_ryukyu.ie.cr.jungle.store.operations.DefaultTreeOperation;
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13 import jp.ac.u_ryukyu.ie.cr.jungle.store.operations.NodeOperation;
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14 import jp.ac.u_ryukyu.ie.cr.jungle.store.operations.TreeOperation;
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15 import jp.ac.u_ryukyu.ie.cr.jungle.store.trasnformer.*;
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16 import jp.ac.u_ryukyu.ie.cr.jungle.util.DefaultEither;
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17 import jp.ac.u_ryukyu.ie.cr.jungle.util.Either;
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18 import jp.ac.u_ryukyu.ie.cr.jungle.util.Error;
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19 import jp.ac.u_ryukyu.ie.cr.jungle.util.IterableConverter;
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20
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21 import java.nio.ByteBuffer;
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22
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23 public class DefaultJungleTreeEditor implements JungleTreeEditor
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24 {
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25 private final TransactionManager txManager;
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26 private final TreeNode root;
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27 private final TreeEditor editor;
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28 private final TreeOperationLog log;
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29
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30
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31 public DefaultJungleTreeEditor(TreeNode _root,TransactionManager _txManager,TreeEditor _editor)
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32 {
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33 this(_root,_txManager,_editor,new DefaultTreeOperationLog());
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34 }
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35
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36
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37
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38 public DefaultJungleTreeEditor(TreeNode newNode,TransactionManager _txManager,TreeEditor _editor,TreeOperationLog _log)
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39 {
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40 this.root = newNode;
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41 this.txManager = _txManager;
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42 this.editor = _editor;
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43 this.log = _log;
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44 }
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45
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46 private Either<Error,JungleTreeEditor> _edit(final NodePath _path,NodeEditor _e)
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47 {
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48 Either<jp.ac.u_ryukyu.ie.cr.jungle.util.Error,LoggingNode> either = editor.edit(root,_path,_e);
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49 if(either.isA()){
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50 return DefaultEither.newA(either.a());
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51 }
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52
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53 LoggingNode newLogging = either.b();
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54 OperationLog newLog = newLogging.getOperationLog();
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55 TreeNode newNode = newLogging.getWrap();
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56
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57 IterableConverter.Converter<TreeOperation,NodeOperation> converter = new IterableConverter.Converter<TreeOperation,NodeOperation>(){
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58 @Override
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59 public TreeOperation conv(NodeOperation _b){
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60 return new DefaultTreeOperation(_path,_b);
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61 }
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62 };
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63
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64 Iterable<TreeOperation> iterable = new IterableConverter<>(newLog,converter);
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65 DefaultTreeOperationLog treeOperationLog = new DefaultTreeOperationLog(iterable,newLog.length());
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66 TreeOperationLog newTreeOpLog = log.append(treeOperationLog);
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67
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68 JungleTreeEditor newEditor = new DefaultJungleTreeEditor(newNode,txManager,editor,newTreeOpLog);
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69 return DefaultEither.newB(newEditor);
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70 }
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71
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72 @Override
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73 public Either<Error,JungleTreeEditor> replaceNewRootNode()
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74 {
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75 replaceRootNodeAt appendChildAt = new replaceRootNodeAt();
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76 return _edit(new DefaultNodePath(),appendChildAt);
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77 }
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78
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79 @Override
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80 public Either<Error,JungleTreeEditor> addNewChildAt(NodePath _path, int _pos)
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81 {
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82 AppendChildAt appendChildAt = new AppendChildAt(_pos);
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83 return _edit(_path,appendChildAt);
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84 }
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85
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86 @Override
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87 public Either<Error,JungleTreeEditor> deleteChildAt(NodePath _path, int _pos)
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88 {
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89 DeleteChildAt deleteChildAt = new DeleteChildAt(_pos);
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90 return _edit(_path,deleteChildAt);
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91 }
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92
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93 @Override
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94 public Either<Error,JungleTreeEditor> putAttribute(NodePath _path,String _key,ByteBuffer _value)
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95 {
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96 PutAttribute putAttribute = new PutAttribute(_key,_value);
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97 return _edit(_path,putAttribute);
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98 }
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99
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100 @Override
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101 public Either<Error,JungleTreeEditor> deleteAttribute(NodePath _path, String _key)
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102 {
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103 DeleteAttribute deleteAttribute = new DeleteAttribute(_key);
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104 return _edit(_path,deleteAttribute);
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105 }
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106
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107 @Override
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108 public Either<Error,JungleTreeEditor> edit(NodePath _path,NodeEditor _editor)
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109 {
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110 return _edit(_path,_editor);
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111 }
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112
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113 @Override
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114 public Either<Error,JungleTreeEditor> success()
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115 {
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116 Either<Error,TransactionManager> either = txManager.commit(root,log);
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117 if(either.isA()){
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118 return DefaultEither.newA(either.a());
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119 }
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120
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121 TransactionManager newTxManager = either.b();
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122 JungleTreeEditor newTreeEditor = new DefaultJungleTreeEditor(root,newTxManager,editor);
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123
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124 return DefaultEither.newB(newTreeEditor);
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125 }
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126
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127 @Override
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128 public Either<Error, JungleTreeEditor> flushSuccess() {
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129 return success();
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130 }
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131
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132
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133 }
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