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31
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1 package alice.jungle.transaction;
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30
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2
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3 import java.util.Iterator;
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4
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179
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5 import fj.data.List;
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6 import fj.data.TreeMap;
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30
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7 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.persistent.ChangeList;
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8 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.persistent.ChangeListWriter;
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9 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.persistent.Result;
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10 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.ChangeSet;
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11 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNode;
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12 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.logger.TreeOperationLog;
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13 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.TreeOperation;
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14 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.AtomicReservableReference;
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15 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.AtomicReservableReference.Reservation;
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16 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.DefaultChangeSet;
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17 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.DefaultTreeContext;
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18 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.TransactionManager;
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19 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.TreeContext;
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20 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.DefaultEither;
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21 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.DefaultError;
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22 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
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23 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
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24
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178
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25 public class NetworkTransactionManager implements TransactionManager
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26 {
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27
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178
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28 private final AtomicReservableReference<TreeContext> repository;
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29 private final TreeContext tip;
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30
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30 private final ChangeListWriter writer;
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31 private final String uuid;
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32 private final String treeName;
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33
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178
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34 public NetworkTransactionManager(String _treeName, ChangeListWriter _writer,TreeContext _tip,
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35 AtomicReservableReference<TreeContext> _repository,String _uuid)
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30
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36 {
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37 repository = _repository;
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38 tip = _tip;
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39 writer = _writer;
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40 uuid = _uuid;
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41 treeName = _treeName;
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42 }
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43
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44 @Override
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45 public Either<Error, TransactionManager> commit(TreeNode _newRoot,final TreeOperationLog _log, TreeMap<String,TreeMap<String, List<TreeNode>>> index) {
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46 ChangeSet cs = tip.getChangeSet();
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47 long currentRevision = cs.revision();
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48 long nextRevision = currentRevision + 1;
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49
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50 ChangeList list = new ChangeList() {
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51 @Override
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52 public Iterator<TreeOperation> iterator(){
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53 return _log.iterator();
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54 }
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87
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55 @Override
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56 public String uuid() {
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57 return uuid;
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58 }
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59 @Override
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60 public String getTreeName() {
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61 return treeName;
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62 }
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63 };
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64
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65 TreeNode root = _newRoot;
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66 DefaultChangeSet newCs = new DefaultChangeSet(root, cs, list, uuid, treeName, nextRevision, null);
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67 DefaultTreeContext newContext = new DefaultTreeContext(_newRoot,newCs);
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68
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69 @SuppressWarnings("rawtypes")
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70 Reservation reservation = repository.makeReservation(tip, newContext);
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71 if(reservation == null) {
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72 return DefaultEither.newA((Error)new DefaultError());
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73 }
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74 Result r = writer.write(list);
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34
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75 if(r != Result.SUCCESS) {
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76 return DefaultEither.newA((Error)new DefaultError());
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77 }
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78 reservation.confirm();
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178
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79 TransactionManager txManager = new NetworkTransactionManager(treeName, writer, newContext, repository, uuid);
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80 return DefaultEither.newB(txManager);
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81 }
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30
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82
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83 @Override
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84 public long getRevision()
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85 {
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86 ChangeSet cs = tip.getChangeSet();
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87 return cs.revision();
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88 }
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89
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90 @Override
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91 public String getUUID() {
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92 return uuid;
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93 }
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94
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95 }
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