Mercurial > hg > Members > tatsuki > bench > jungle-core
view src/main/java/jp/ac/u_ryukyu/ie/cr/tatsuki/jungle/store/index/ParentIndex.java @ 188:868a746996ad
minner change
author | tatsuki |
---|---|
date | Fri, 17 Apr 2015 22:12:44 +0900 |
parents | 066d9c5758dc |
children |
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package jp.ac.u_ryukyu.ie.cr.tatsuki.jungle.store.index; import java.util.Iterator; import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNode; import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNodeChildren; import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.TreeMapOrd; import fj.data.TreeMap; public class ParentIndex { private TreeMap<TreeNode, TreeNode> parentIndex; public ParentIndex() { parentIndex = TreeMap.empty(TreeMapOrd.treeNodeOrd); } public boolean isEmpty(){ return parentIndex.isEmpty(); } public TreeNode get(TreeNode child) { TreeNode parent = parentIndex.getLoop(child); if (parent != null) return parent; return null; } public ParentIndex set(TreeNode parent ,TreeNode child) { parentIndex = parentIndex.set(child, parent); return this; } public ParentIndex delete(TreeNode child) { parentIndex = parentIndex.delete(child); return this; } public ParentIndex deleteAllChildren(TreeNode parentNode) { TreeNodeChildren children = parentNode.getChildren(); Iterator<TreeNode> childrenIterator = children.iterator(); for (; childrenIterator.hasNext();) { TreeNode child = childrenIterator.next(); parentIndex = parentIndex.delete(child); } return this; } public ParentIndex addAllChildren(TreeNode parentNode) { TreeNodeChildren children = parentNode.getChildren(); Iterator<TreeNode> childrenIterator = children.iterator(); for (; childrenIterator.hasNext();) { TreeNode child = childrenIterator.next(); parentIndex = parentIndex.set(child, parentNode); } return this; } }