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

#ifndef _KVSTORE_ISTREE_NODE_ISINTLNODE_H
#define _KVSTORE_ISTREE_NODE_ISINTLNODE_H

#include "ISNode.h"

class ISIntlNode : public ISNode
{
protected:
	ISNode* childs[MAX_CHILD_NUM + 1];
	//Node** childs;
	//void AllocChilds();
public:
	ISIntlNode();
	ISIntlNode(bool isVirtual);
	//IntlNode(Storage* TSM);
	void Virtual();
	void Normal();
	ISNode* getChild(int _index) const;
	bool setChild(ISNode* _child, int _index);
	bool addChild(ISNode* _child, int _index);
	bool subChild(int _index);
	unsigned getSize() const;
	ISNode* split(ISNode* _father, int _index);
	ISNode* coalesce(ISNode* _father, int _index);
	void release();
	~ISIntlNode();
	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