src/iodbc/hdbc.h

#ifndef	_HDBC_H
#define	_HDBC_H

typedef	struct DBC
{
	int	type;		/* must be 1st field */
	struct DBC FAR*
		next;

	HENV	genv;		/* back point to global env object */

	HDBC	dhdbc;		/* driver's private dbc */
	HENV	henv;		/* back point to instant env object */
	HSTMT	hstmt;		/* list of statement object handle(s) */
	HERR	herr;

	int	state;

	/* options */
	UDWORD	access_mode;
	UDWORD	autocommit;

	UDWORD	login_timeout;
	UDWORD	odbc_cursors;
	UDWORD	packet_size;
	UDWORD	quiet_mode;
	UDWORD	txn_isolation;
	SWORD	cb_commit;
	SWORD	cb_rollback;

	char FAR*
		current_qualifier;

	int	trace;	/* trace flag */
	char FAR*
		tfile;
	void FAR*
		tstm;	/* trace stream */
} DBC_t;

/*
 * Note:
 *  - ODBC applications can see address of driver manager's
 *    connection object, i.e connection handle -- a void pointer,
 *    but not detail of it. ODBC applications can neither see
 *    detail driver's connection object nor its address.
 *
 *  - ODBC driver manager knows its own connection objects and
 *    exposes their address to an ODBC application. Driver manager
 *    also knows address of driver's connection objects and keeps
 *    it via dhdbc field in driver manager's connection object.
 *
 *  - ODBC driver exposes address of its own connection object to
 *    driver manager without detail.
 *
 *  - Applications can get driver's connection object handle by
 *    SQLGetInfo() with fInfoType equals to SQL_DRIVER_HDBC.
 */

enum	{
	en_dbc_allocated,
	en_dbc_needdata,
	en_dbc_connected,
	en_dbc_hstmt
};

#endif
Commit	Line	Data
	1	#ifndef _HDBC_H
	2	#define _HDBC_H
	3
	4	typedef struct DBC
	5	{
	6	int type; /* must be 1st field */
	7	struct DBC FAR*
	8	next;
	9
	10	HENV genv; /* back point to global env object */
	11
	12	HDBC dhdbc; /* driver's private dbc */
	13	HENV henv; /* back point to instant env object */
	14	HSTMT hstmt; /* list of statement object handle(s) */
	15	HERR herr;
	16
	17	int state;
	18
	19	/* options */
	20	UDWORD access_mode;
	21	UDWORD autocommit;
	22
	23	UDWORD login_timeout;
	24	UDWORD odbc_cursors;
	25	UDWORD packet_size;
	26	UDWORD quiet_mode;
	27	UDWORD txn_isolation;
	28	SWORD cb_commit;
	29	SWORD cb_rollback;
	30
	31	char FAR*
	32	current_qualifier;
	33
	34	int trace; /* trace flag */
	35	char FAR*
	36	tfile;
	37	void FAR*
	38	tstm; /* trace stream */
	39	} DBC_t;
	40
	41	/*
	42	* Note:
	43	* - ODBC applications can see address of driver manager's
	44	* connection object, i.e connection handle -- a void pointer,
	45	* but not detail of it. ODBC applications can neither see
	46	* detail driver's connection object nor its address.
	47	*
	48	* - ODBC driver manager knows its own connection objects and
	49	* exposes their address to an ODBC application. Driver manager
	50	* also knows address of driver's connection objects and keeps
	51	* it via dhdbc field in driver manager's connection object.
	52	*
	53	* - ODBC driver exposes address of its own connection object to
	54	* driver manager without detail.
	55	*
	56	* - Applications can get driver's connection object handle by
	57	* SQLGetInfo() with fInfoType equals to SQL_DRIVER_HDBC.
	58	*/
	59
	60	enum {
	61	en_dbc_allocated,
	62	en_dbc_needdata,
	63	en_dbc_connected,
	64	en_dbc_hstmt
	65	};
	66
	67	#endif