package jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction;

import java.nio.ByteBuffer;

import fj.Ord;
import fj.data.List;
import fj.data.TreeMap;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNode;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.logger.DefaultOperationLog;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.logger.OperationLog;

public class DefaultTreeNode implements TreeNode
{
	//private final DefaultNode wrap;
	private List<TreeNode> children;
	private TreeMap<String,ByteBuffer> attrs;
	private OperationLog log;
	
	private static final List<TreeNode> NIL_LIST = List.nil();
	private static final TreeMap<String,ByteBuffer> NIL_MAP = TreeMap.empty(Ord.stringOrd);
	
	public DefaultTreeNode()
	{
		this(NIL_LIST,NIL_MAP,new DefaultOperationLog());
	}
	
	public DefaultTreeNode(List<TreeNode> _children,TreeMap<String,ByteBuffer> _attrs)
	{
		this(_children, _attrs, new DefaultOperationLog());
	}
	
	public DefaultTreeNode(TreeNode _node, OperationLog _log)
	{
		this(_node.getChildren().getChildrenAsRawList(), _node.getAttributes().getAttributesAsRawMap(), _log);
	}
	
	
	
	public DefaultTreeNode(List<TreeNode> _children,TreeMap<String,ByteBuffer> _attrs, OperationLog _log){
		attrs = _attrs;
		children = _children;
		log = _log;
	}

	@Override
	public DefaultTreeNodeChildren getChildren()
	{
		return new DefaultTreeNodeChildren(children, attrs);
	}

	@Override
	public DefaultTreeNodeAttribute getAttributes()
	{
		return new DefaultTreeNodeAttribute(children, attrs,log);
	}
	
	@Override
	public DefaultTreeNode createNewNode(){
		return new DefaultTreeNode();
	}
	
	/*public DefaultNode getWrap()
	{
		return wrap;
	}*/

	/*@Override
	public Node getAsNode()
	{
		return getWrap();
	}
	*/
	public DefaultTreeNode clone()
	{
		return new DefaultTreeNode(children,attrs);
	}

	@Override
	public OperationLog getLog() {
		OperationLog _log = log;
		log = new DefaultOperationLog();
		return _log;
	}
	
	@Override
	public void putLog(OperationLog _log){
		log = _log;
	}
	
}