|
31
|
1 package alice.jungle.transaction;
|
|
30
|
2
|
|
|
3 import java.util.Iterator;
|
|
|
4
|
|
|
5 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.persistent.ChangeList;
|
|
|
6 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.persistent.ChangeListWriter;
|
|
|
7 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.persistent.Result;
|
|
|
8 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.ChangeSet;
|
|
|
9 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNode;
|
|
|
10 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.logger.TreeOperationLog;
|
|
|
11 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.TreeOperation;
|
|
|
12 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.AtomicReservableReference;
|
|
|
13 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.AtomicReservableReference.Reservation;
|
|
|
14 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.DefaultChangeSet;
|
|
|
15 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.DefaultTreeContext;
|
|
|
16 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.TransactionManager;
|
|
|
17 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.TreeContext;
|
|
|
18 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.DefaultEither;
|
|
|
19 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.DefaultError;
|
|
|
20 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
|
|
|
21 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
|
|
|
22
|
|
176
|
23 public class NetworkTransactionManager<T extends TreeNode> implements TransactionManager<T>
|
|
30
|
24 {
|
|
|
25
|
|
|
26 private final AtomicReservableReference<TreeContext<T>> repository;
|
|
|
27 private final TreeContext<T> tip;
|
|
|
28 private final ChangeListWriter writer;
|
|
|
29 private final String uuid;
|
|
|
30 private final String treeName;
|
|
|
31
|
|
32
|
32 public NetworkTransactionManager(String _treeName, ChangeListWriter _writer,TreeContext<T> _tip,
|
|
91
|
33 AtomicReservableReference<TreeContext<T>> _repository,String _uuid)
|
|
30
|
34 {
|
|
|
35 repository = _repository;
|
|
|
36 tip = _tip;
|
|
|
37 writer = _writer;
|
|
|
38 uuid = _uuid;
|
|
|
39 treeName = _treeName;
|
|
|
40 }
|
|
|
41
|
|
|
42 @Override
|
|
176
|
43 public Either<Error, TransactionManager<T>> commit(TreeNode _newRoot,final TreeOperationLog _log) {
|
|
30
|
44 ChangeSet cs = tip.getChangeSet();
|
|
|
45 long currentRevision = cs.revision();
|
|
|
46 long nextRevision = currentRevision + 1;
|
|
|
47
|
|
|
48 ChangeList list = new ChangeList() {
|
|
|
49 @Override
|
|
|
50 public Iterator<TreeOperation> iterator(){
|
|
|
51 return _log.iterator();
|
|
|
52 }
|
|
87
|
53 @Override
|
|
|
54 public String uuid() {
|
|
|
55 return uuid;
|
|
|
56 }
|
|
|
57 @Override
|
|
|
58 public String getTreeName() {
|
|
|
59 return treeName;
|
|
|
60 }
|
|
30
|
61 };
|
|
|
62
|
|
176
|
63 TreeNode root = _newRoot;
|
|
87
|
64 DefaultChangeSet newCs = new DefaultChangeSet(root, cs, list, uuid, treeName, nextRevision);
|
|
30
|
65 DefaultTreeContext<T> newContext = new DefaultTreeContext<T>(_newRoot,newCs);
|
|
|
66
|
|
|
67 @SuppressWarnings("rawtypes")
|
|
|
68 Reservation reservation = repository.makeReservation(tip, newContext);
|
|
|
69 if(reservation == null) {
|
|
|
70 return DefaultEither.newA((Error)new DefaultError());
|
|
|
71 }
|
|
|
72 Result r = writer.write(list);
|
|
34
|
73 if(r != Result.SUCCESS) {
|
|
|
74 return DefaultEither.newA((Error)new DefaultError());
|
|
|
75 }
|
|
|
76 reservation.confirm();
|
|
91
|
77 TransactionManager<T> txManager = new NetworkTransactionManager<T>(treeName, writer, newContext, repository, uuid);
|
|
34
|
78 return DefaultEither.newB(txManager);
|
|
|
79 }
|
|
30
|
80
|
|
|
81 @Override
|
|
|
82 public long getRevision()
|
|
|
83 {
|
|
|
84 ChangeSet cs = tip.getChangeSet();
|
|
|
85 return cs.revision();
|
|
|
86 }
|
|
|
87
|
|
|
88 @Override
|
|
|
89 public String getUUID() {
|
|
|
90 return uuid;
|
|
|
91 }
|
|
|
92
|
|
|
93 }
|
