Mercurial > hg > Database > jungle-network

comparison src/main/java/app/bbs/BullentInBoardJungleManager.java @ 123:495ac60d7f5f

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Modified JungleUpdater
author one
date Fri, 27 Dec 2013 20:13:37 +0900
parents src/main/java/app/bbs/JungleManager.java@895ab2907db3
children 292538b1de32
comparison
equal deleted inserted replaced
122:cef245f71053 123:495ac60d7f5f
1 package app.bbs;
2
3 import java.nio.ByteBuffer;
4
5 import alice.jungle.operations.NetworkTreeOperationLog;
6 import alice.jungle.transaction.JungleUpdater;
7 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.DefaultJungle;
8 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.Jungle;
9 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.JungleTree;
10 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.JungleTreeEditor;
11 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.core.Node;
12 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.DefaultTreeEditor;
13 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.traverser.DefaultTraverser;
14 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
15 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
16
17 public class BullentInBoardJungleManager {
18 private static BullentInBoardJungleManager instance = new BullentInBoardJungleManager();
19 private Jungle jungle;
20
21 private BullentInBoardJungleManager() {
22 jungle = new DefaultJungle(null,"default",new DefaultTreeEditor(new DefaultTraverser()));
23 }
24
25 public static BullentInBoardJungleManager getInstantce() {
26 return instance;
27 }
28
29 public static void setJungle(Jungle _j) {
30 instance.jungle = _j;
31 }
32
33 public static Jungle getJungle() {
34 return instance.jungle;
35 }
36
37 public static JungleTree createNewTree(String name) {
38 return instance.jungle.createNewTree(name);
39 }
40
41 public static Either<Error, JungleTreeEditor> update(NetworkTreeOperationLog netLog) {
42 String treeName = netLog.getTreeName();
43 Jungle jungle = BullentInBoardJungleManager.getJungle();
44 if (jungle.getTreeByName(treeName) == null) {
45 if(null == jungle.createNewTree(treeName)){
46 throw new IllegalStateException();
47 }
48 }
49 JungleTree tree = jungle.getTreeByName(treeName);
50 JungleTreeEditor editor = tree.getLocalTreeEditor();
51
52 int pos = calculatePosition(tree.getRootNode(), netLog.getTimeStamp());
53 Either<Error, JungleTreeEditor> either = JungleUpdater.edit(editor, netLog, pos);
54 if(either.isA()) {
55 throw new IllegalStateException();
56 }
57 editor = either.b();
58 either = editor.success();
59 if(either.isA()) {
60 throw new IllegalStateException();
61 }
62 return either;
63 }
64
65 private static int calculatePosition(Node node, long newNodeTimeStamp) {
66 int count = 0;
67 long childTimeStamp = 0;
68 for(Node n : node.getChildren()) {
69 ByteBuffer timestamp = n.getAttributes().get("timestamp");
70 if(timestamp == null) {
71 return count;
72 }
73 childTimeStamp = timestamp.getLong();
74 if (newNodeTimeStamp < childTimeStamp) {
75 break;
76 }
77 count++;
78 }
79 return count;
80 }
81 }