csqlresult.h

很好用的数据库连接组件

/*=================================================================
** 摘    要：	定义驱动层的CSqlResult和CSqlBcpResult
**              它们是虚拟类。不同的数据库使用时应该继承实现
**		CsqlResult用于执行sql语句。
**		CSqlResult用于执行bcp操作      
==================================================================*/
#ifndef CSQLRESULT_H
#define CSQLRESULT_H
#include "csql.h"
class CVariant;
class CSqlDriver;
class CSql;
class CSqlResultPrivate;
class CSqlBcpResultPrivate;
class CSqlError;

class CSqlResult
{
	friend class CSqlQuery;
	friend class CSqlResultShared;
public:
	virtual ~ CSqlResult ();

protected:
	CSqlResult (const CSqlDriver * db);
	string lastQuery () const;
	CSqlError lastError () const;
	bool isValid () const;
	bool isActive () const;
	bool isSelect () const;
	int at () const;
	void setAt (int at);
	const CSqlDriver *driver () const;
	virtual void setActive (bool a);
	virtual void setLastError (const CSqlError & e);
	virtual void setQuery (const string & query);
	virtual void setSelect (bool s);
	virtual CVariant data (int i) = 0;
	virtual int intData (int i) = 0;
	virtual char* stringData (int i) = 0;
	virtual bool isNull (int i) = 0;
	virtual bool reset (const string & sqlquery) = 0;
	virtual bool multi_reset (const string & sqlquery) = 0;
	virtual int  get_result(){return -1;};
	virtual int  get_columns(){return -1;};
	virtual bool fetch () = 0;
	virtual bool cancel(bool bAll=true) = 0;
	virtual int size () = 0;
	virtual int numRowsAffected () = 0;
	virtual bool bind( char buf[][256] , int len ) { return FALSE ;} ;
private:
	CSqlResultPrivate * d;
private:			// Disabled copy constructor and operator=
	CSqlResult (const CSqlResult &);
	CSqlResult & operator= (const CSqlResult &);
};
#endif