You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
104 lines
2.7 KiB
104 lines
2.7 KiB
//========= Copyright Valve Corporation, All rights reserved. ============//
|
|
//
|
|
// Purpose:
|
|
//
|
|
// $NoKeywords: $
|
|
//=============================================================================//
|
|
|
|
#ifndef MYSQL_WRAPPER_H
|
|
#define MYSQL_WRAPPER_H
|
|
#ifdef _WIN32
|
|
#pragma once
|
|
#endif
|
|
|
|
|
|
#include "utlvector.h"
|
|
|
|
|
|
class IMySQL;
|
|
|
|
|
|
// This is a helper class to build queries like the stream IO.
|
|
class CMySQLQuery
|
|
{
|
|
friend class CMySQL;
|
|
|
|
public:
|
|
// This is like a sprintf, but it will grow the string as necessary.
|
|
void Format( PRINTF_FORMAT_STRING const char *pFormat, ... );
|
|
|
|
private:
|
|
CUtlVector<char> m_QueryText;
|
|
};
|
|
|
|
|
|
class CColumnValue
|
|
{
|
|
public:
|
|
|
|
CColumnValue( CMySQL *pSQL, int iColumn );
|
|
|
|
const char* String();
|
|
long Int32();
|
|
unsigned long UInt32();
|
|
|
|
private:
|
|
CMySQL *m_pSQL;
|
|
int m_iColumn;
|
|
};
|
|
|
|
|
|
class IMySQL
|
|
{
|
|
public:
|
|
virtual void Release() = 0;
|
|
|
|
// These execute SQL commands. They return 0 if the query was successful.
|
|
virtual int Execute( const char *pString ) = 0;
|
|
virtual int Execute( CMySQLQuery &query ) = 0;
|
|
|
|
// If you just inserted rows into a table with an AUTO_INCREMENT column,
|
|
// then this returns the (unique) value of that column.
|
|
virtual unsigned long InsertID() = 0;
|
|
|
|
// If you just executed a select statement, then you can use these functions to
|
|
// iterate over the result set.
|
|
|
|
// Get the number of columns in the data returned from the last query (if it was a select statement).
|
|
virtual int NumFields() = 0;
|
|
|
|
// Get the name of each column returned by the last query.
|
|
virtual const char* GetFieldName( int iColumn ) = 0;
|
|
|
|
// Call this in a loop until it returns false to iterate over all rows the query returned.
|
|
virtual bool NextRow() = 0;
|
|
|
|
// You can call this to start iterating over the result set from the start again.
|
|
// Note: after calling this, you have to call NextRow() to actually get the first row's value ready.
|
|
virtual bool SeekToFirstRow() = 0;
|
|
|
|
virtual CColumnValue GetColumnValue( int iColumn ) = 0;
|
|
virtual CColumnValue GetColumnValue( const char *pColumnName ) = 0;
|
|
|
|
// You can call this to get the index of a column for faster lookups with GetColumnValue( int ).
|
|
// Returns -1 if the column can't be found.
|
|
virtual int GetColumnIndex( const char *pColumnName ) = 0;
|
|
};
|
|
|
|
|
|
IMySQL* InitMySQL( const char *pDBName, const char *pHostName="", const char *pUserName="", const char *pPassword="" );
|
|
|
|
|
|
|
|
// ------------------------------------------------------------------------------------------------ //
|
|
// Inlines.
|
|
// ------------------------------------------------------------------------------------------------ //
|
|
|
|
inline CColumnValue::CColumnValue( CMySQL *pSQL, int iColumn )
|
|
{
|
|
m_pSQL = pSQL;
|
|
m_iColumn = iColumn;
|
|
}
|
|
|
|
|
|
#endif // MYSQL_WRAPPER_H
|