
/* File:			psqlodbc.h
 *
 * Description:		This file contains defines and declarations that are related to
 *					the entire driver.
 *
 * Comments:		See "notice.txt" for copyright and license information.
 *
 * $Id: psqlodbc.h,v 1.36 2001/02/11 13:53:42 momjian Exp $
 */

#ifndef __PSQLODBC_H__
#define __PSQLODBC_H__

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdio.h>				/* for FILE* pointers: see GLOBAL_VALUES */

#ifndef WIN32
#define Int4 long int
#define UInt4 unsigned int
#define Int2 short
#define UInt2 unsigned short
typedef float SFLOAT;
typedef double SDOUBLE;

#else
#define Int4 int
#define UInt4 unsigned int
#define Int2 short
#define UInt2 unsigned short
#endif

typedef UInt4 Oid;

/* Driver stuff */
#define ODBCVER					0x0250
#define DRIVER_ODBC_VER			"02.50"

#define DRIVERNAME				"PostgreSQL ODBC"
#define DBMS_NAME				"PostgreSQL"

#define POSTGRESDRIVERVERSION	"07.01.0003"

#ifdef WIN32
#define DRIVER_FILE_NAME		"PSQLODBC.DLL"
#else
#define DRIVER_FILE_NAME		"libpsqlodbc.so"
#endif

/* Limits */
#ifdef WIN32
#define BLCKSZ					4096
#endif

#define MAX_MESSAGE_LEN			65536	/* This puts a limit on query size
										 * but I don't */
 /* see an easy way round this - DJP 24-1-2001 */
#define MAX_CONNECT_STRING		4096
#define ERROR_MSG_LENGTH		4096
#define FETCH_MAX				100		/* default number of rows to cache
										 * for declare/fetch */
#define TUPLE_MALLOC_INC		100
#define SOCK_BUFFER_SIZE		4096	/* default socket buffer size */
#define MAX_CONNECTIONS			128		/* conns per environment
										 * (arbitrary)	*/
#define MAX_FIELDS				512
#define BYTELEN					8
#define VARHDRSZ				sizeof(Int4)

#define MAX_TABLE_LEN			32
#define MAX_COLUMN_LEN			32
#define MAX_CURSOR_LEN			32

/*	Registry length limits */
#define LARGE_REGISTRY_LEN		4096	/* used for special cases */
#define MEDIUM_REGISTRY_LEN		256		/* normal size for
										 * user,database,etc. */
#define SMALL_REGISTRY_LEN		10		/* for 1/0 settings */


/*	These prefixes denote system tables */
#define POSTGRES_SYS_PREFIX		"pg_"
#define KEYS_TABLE				"dd_fkey"

/*	Info limits */
#define MAX_INFO_STRING			128
#define MAX_KEYPARTS			20
#define MAX_KEYLEN				512		/* max key of the form
										 * "date+outlet+invoice" */
#define MAX_ROW_SIZE			0		/* Unlimited rowsize with the
										 * Tuple Toaster */
#define MAX_STATEMENT_LEN		0		/* Unlimited statement size with
										 * 7.0 */

/* Previously, numerous query strings were defined of length MAX_STATEMENT_LEN */
/* Now that's 0, lets use this instead. DJP 24-1-2001 */
#define STD_STATEMENT_LEN		MAX_MESSAGE_LEN

#define PG64	"6.4"

typedef struct ConnectionClass_ ConnectionClass;
typedef struct StatementClass_ StatementClass;
typedef struct QResultClass_ QResultClass;
typedef struct SocketClass_ SocketClass;
typedef struct BindInfoClass_ BindInfoClass;
typedef struct ParameterInfoClass_ ParameterInfoClass;
typedef struct ColumnInfoClass_ ColumnInfoClass;
typedef struct TupleListClass_ TupleListClass;
typedef struct EnvironmentClass_ EnvironmentClass;
typedef struct TupleNode_ TupleNode;
typedef struct TupleField_ TupleField;

typedef struct col_info COL_INFO;
typedef struct lo_arg LO_ARG;

typedef struct GlobalValues_
{
	int			fetch_max;
	int			socket_buffersize;
	int			unknown_sizes;
	int			max_varchar_size;
	int			max_longvarchar_size;
	char		debug;
	char		commlog;
	char		disable_optimizer;
	char		ksqo;
	char		unique_index;
	char		onlyread;		/* readonly is reserved on Digital C++
								 * compiler */
	char		use_declarefetch;
	char		text_as_longvarchar;
	char		unknowns_as_longvarchar;
	char		bools_as_char;
	char		lie;
	char		parse;
	char		cancel_as_freestmt;
	char		extra_systable_prefixes[MEDIUM_REGISTRY_LEN];
	char		conn_settings[LARGE_REGISTRY_LEN];

	/*
	 * Protocol is not used anymore, but kept in case it is useful in the
	 * future.	bjm 2001-02-10
	 */
	char		protocol[SMALL_REGISTRY_LEN];
	FILE	   *mylogFP;
	FILE	   *qlogFP;
} GLOBAL_VALUES;

typedef struct StatementOptions_
{
	int			maxRows;
	int			maxLength;
	int			rowset_size;
	int			keyset_size;
	int			cursor_type;
	int			scroll_concurrency;
	int			retrieve_data;
	int			bind_size;		/* size of each structure if using Row
								 * Binding */
	int			use_bookmarks;
} StatementOptions;

/*	Used to pass extra query info to send_query */
typedef struct QueryInfo_
{
	int			row_size;
	QResultClass *result_in;
	char	   *cursor;
} QueryInfo;


#define PG_TYPE_LO					-999		/* hack until permanent
												 * type available */
#define PG_TYPE_LO_NAME				"lo"
#define OID_ATTNUM					-2	/* the attnum in pg_index of the
										 * oid */

/* sizes */
#define TEXT_FIELD_SIZE				8190		/* size of text fields
												 * (not including null
												 * term) */
#define NAME_FIELD_SIZE				32	/* size of name fields */
#define MAX_VARCHAR_SIZE			254 /* maximum size of a varchar (not
										 * including null term) */

#define PG_NUMERIC_MAX_PRECISION	1000
#define PG_NUMERIC_MAX_SCALE		1000

#include "misc.h"

#endif
