Initial MSVC 2008 projects workspace

libl2c_utils/l2c_db.h

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+#pragma once
+#include "l2c_utils.h"
+#include "l2c_exception.h"
+
+class L2C_UTILS_API MysqlQuery
+{
+	friend class MysqlConnection;
+public:
+	MysqlQuery();
+	MysqlQuery( const wchar_t *_Format, ... );
+	~MysqlQuery();
+public:
+	void clear();
+	void create( const wchar_t *_Format, ... );
+	int getNumRows() const;
+	int getNumFields() const;
+public:
+	bool  getNextRow();
+	// get field content by field index
+	char *getFieldStr( int idx );
+	char *getFieldStr( const wchar_t *field_name ); // really needed?
+	char *getFieldStr( const char    *field_name );
+	// get field content as unicode strings
+	void getFieldStrW( int idx,                   wchar_t *out, size_t maxCount );
+	void getFieldStrW( const char    *field_name, wchar_t *out, size_t maxCount );
+	void getFieldStrW( const wchar_t *field_name, wchar_t *out, size_t maxCount );
+	// typecasts
+	int                    getFieldInt( int idx );
+	unsigned int           getFieldUInt( int idx );
+	long long int          getFieldInt64( int idx );
+	unsigned long long int getFieldUInt64( int idx );
+	double                 getFieldDouble( int idx );
+	bool                   getFieldBool( int idx );
+	// typecasts - get field by name
+	int                    getFieldInt( const char *field_name );
+	unsigned int           getFieldUInt( const char *field_name );
+	long long int          getFieldInt64( const char *field_name );
+	unsigned long long int getFieldUInt64( const char *field_name );
+	double                 getFieldDouble( const char *field_name );
+	bool                   getFieldBool( const char *field_name );
+protected:
+	wchar_t                    *q;
+	MYSQL_RES                  *result;
+	MYSQL_ROW                   row;
+	int                         num_rows;
+	int                         num_fields;
+	char                        NULL_RET[8];
+};
+
+
+
+class L2C_UTILS_API MysqlConnection
+{
+	friend class MysqlConnectionManager;
+protected:
+	MysqlConnection();
+	~MysqlConnection();
+protected:
+	bool connect( const wchar_t *server, const wchar_t *user, const wchar_t *pass, const wchar_t *db );
+	bool close();
+
+public:
+	char *escapeStringMalloc( const char *in );
+	const wchar_t *getErrorStr();
+	bool isConnected();
+	bool executeQuery( MysqlQuery& q );
+
+protected:
+	MYSQL   m_mysql;
+	bool    m_connected;
+	wchar_t m_errstr[256];
+};
+
+
+
+class L2C_UTILS_API MysqlConnectionManager
+{
+public:
+	MysqlConnectionManager();
+	~MysqlConnectionManager();
+	bool initialize( int maxConnections, const wchar_t *server, const wchar_t *user,
+		const wchar_t *pass, const wchar_t *db );
+	void closeAllConnections();
+public:
+	MysqlConnection      *getConnection();
+	bool                  releaseConnection( MysqlConnection *con );
+	int                   getCountActiveConnections() const;
+	int                   getCountMaxConnections() const;
+protected:
+	static bool           m_wasLibraryInit;
+	bool                  m_initialized;
+	wchar_t               m_server[128];
+	wchar_t               m_user[128];
+	wchar_t               m_pass[128];
+	wchar_t               m_db[128];
+	int                   m_maxConnections;
+	int                   m_numActiveConnections;
+	MysqlConnection     **m_connections;
+	bool                 *m_connbusy;
+	CRITICAL_SECTION      m_lock;
+protected:
+	void Lock();
+	void Unlock();
+};