/*=============================================================================
# Filename: IntlNode.h
# Author: syzz
# Mail: 1181955272@qq.com
# Last Modified: 2015-04-26 16:40
# Description: the internal-node of a B+ tree
=============================================================================*/

#ifndef _KVSTORE_NODE_INTLNODE_H
#define _KVSTORE_NODE_INTLNODE_H

#include "../../Util/Util.h"
#include "Node.h"

class IntlNode: public Node
{
protected:
	Node* childs[MAX_CHILD_NUM+1];
	//Node** childs;
	//void AllocChilds();
public:
	IntlNode();
	IntlNode(bool isVirtual);
	//IntlNode(Storage* TSM);
	void Virtual();
	void Normal();
	Node* getChild(int _index) const;
	bool setChild(Node* _child, int _index);
	bool addChild(Node* _child, int _index);
	bool subChild(int _index);
	unsigned getSize() const;
	Node* split(Node* _father, int _index);
	Node* coalesce(Node* _father, int _index);
	void release();				
	~IntlNode();
	void print(std::string s);				//DEBUG
	/*non-sense functions: polymorphic
	Node* getPrev() const;
	Node* getNext() const;
	const Bstr* getValue(int _index) const;
	bool setValue(const Bstr* _value, int _index);
	bool addValue(const Bstr* _value, int _index);
	bool subValue(int _index);
	void setPrev(Node* _prev);
	void setNext(Node* _next);
	*/
};

#endif