--- parser3/src/sql/pa_sql_driver.h	2001/04/05 08:09:25	1.1
+++ parser3/src/sql/pa_sql_driver.h	2001/04/17 19:00:46	1.6
@@ -5,7 +5,7 @@
 
 	Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
 
-	$Id: pa_sql_driver.h,v 1.1 2001/04/05 08:09:25 paf Exp $
+	$Id: pa_sql_driver.h,v 1.6 2001/04/17 19:00:46 paf Exp $
 
 
 	driver dynamic library must look like this:
@@ -29,7 +29,7 @@
 #ifndef PA_SQL_DRIVER_H
 #define PA_SQL_DRIVER_H
 
-#include "pa_pool.h"
+#include <sys/types.h>
 
 /// service functions for SQL driver to use
 class Services_for_SQL_driver {
@@ -42,31 +42,49 @@ public:
 	virtual void _throw(const char *comment) =0;
 };
 
-#define SQL_DRIVER_API_VERSION 0x0300
+#define SQL_DRIVER_API_VERSION 0x0301
 
 /// SQL driver API
 class SQL_Driver {
 public:
 
+	struct Cell {
+		void *ptr;
+		size_t size;
+	};
+
+public:
+
 	/// assignes services to driver. you can not use driver until this
-	void set_services(Services_for_SQL_driver *aservices) { fservices=aservices; }
+	void set_services(Services_for_SQL_driver *aservices) { services=aservices; }
 
 	SQL_Driver() :
-		fservices(0) {
+		services(0) {
 	}
 	/// get api version
 	virtual int api_version() =0;
+	/// initialize driver by loading sql dynamic link library
+	virtual const char *initialize(const char *dlopen_file_spec) =0;
 	/// connect. @returns true+'connection' on success. 'error' on failure
 	virtual void connect(char *url, void **connection) =0;
 	virtual void disconnect(void *connection) =0;
 	virtual void commit(void *connection) =0;
 	virtual void rollback(void *connection) =0;
+	/// @returns true to indicate that connection still alive 
+	virtual bool ping(void *connection) =0;
+	/// encodes the string in 'from' to an escaped SQL string
+	virtual unsigned int quote(void *connection,
+		char *to, const char *from, unsigned int length) =0;
+	virtual void query(void *connection,
+		const char *statement, unsigned long offset, unsigned long limit,
+		unsigned int *column_count, Cell **columns,
+		unsigned long *row_count, Cell ***rows) =0;
 	/// log error message
 	//static void log(Pool& pool, const char *fmt, ...);
 
 protected:
 
-	Services_for_SQL_driver *fservices;
+	Services_for_SQL_driver *services;
 };
 
 typedef SQL_Driver *(*SQL_Driver_create_func)();