data.h

关联规则中转换树算法在VC下的实现

// data.h: interface for the data class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_DATA_H__5BD29E7A_20D4_49BD_BA76_8D26BA2D2923__INCLUDED_)
#define AFX_DATA_H__5BD29E7A_20D4_49BD_BA76_8D26BA2D2923__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#define TRANSLEN 80

class Transaction
{
public:
	
	Transaction():maxlength(TRANSLEN), length(0){ t = new int[maxlength];}
	void EnlargeTranSize(int, int);				// if current item is greater than current longest transaction, we change the length of t as m*item
	~Transaction(){delete []t;}
	
	int maxlength;
	int length;
	int *t;
};

class data  
{
public:
	data(char *filename);
	virtual ~data();

	int isOpen();
	void close(){if(fin)fclose(fin);}
	
	Transaction *getNextTrans(Transaction* Trans);
	
private:
	FILE *fin;
};

#endif // !defined(AFX_DATA_H__5BD29E7A_20D4_49BD_BA76_8D26BA2D2923__INCLUDED_)