Mercurial > hg > Members > tatsuki > bench > jungle-core

comparison src/main/java/jp/ac/u_ryukyu/ie/cr/tatsuki/jungle/store/index/ParentIndex.java @ 150:1432adf6f490

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
add ParentIndex.java
author one
date Sat, 22 Nov 2014 12:54:28 +0900
parents
children d9fbddf77bf6
comparison
equal deleted inserted replaced
149:feb2346ace19 150:1432adf6f490
1 package jp.ac.u_ryukyu.ie.cr.tatsuki.jungle.store.index;
2
3 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNode;
4 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.TreeMapOrd;
5 import fj.data.Option;
6 import fj.data.TreeMap;
7
8 public class ParentIndex {
9
10 private final TreeMap<TreeNode, TreeNode> parentIndex;
11
12 public ParentIndex() {
13 parentIndex = TreeMap.empty(TreeMapOrd.treeNodeOrd);
14 }
15
16 public ParentIndex(TreeMap<TreeNode, TreeNode> parentIndex) {
17 this.parentIndex = parentIndex;
18 }
19
20 public ParentIndex(ParentIndex parentIndex) {
21 this.parentIndex = parentIndex.getParentIndex();
22 }
23
24 private TreeMap<TreeNode, TreeNode> getParentIndex() {
25 return parentIndex;
26 }
27
28 public Option<TreeNode> get(TreeNode child) {
29 Option<TreeNode> parentOp = parentIndex.get(child);
30 return parentOp;
31 }
32
33 public ParentIndex set(TreeNode child, TreeNode parent){
34 TreeMap<TreeNode, TreeNode> newParentIndex = parentIndex.set(child,parent);
35 return new ParentIndex(newParentIndex);
36 }
37
38 public ParentIndex delete(TreeNode child) {
39 TreeMap<TreeNode, TreeNode> newParentIndex = parentIndex.delete(child);
40 return new ParentIndex(newParentIndex);
41 }
42
43 }