Functions to manage result structuresProvides some convenience macros and some memory management functions for result structures. More...

#include "db_res.h"
#include "db_row.h"
#include "../../dprint.h"
#include "../../mem/mem.h"
#include <string.h>

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Functions

int db_allocate_columns (db1_res_t *_r, const unsigned int cols)
Allocate storage for column names and type in existing result structure.
int db_allocate_rows (db1_res_t *_res)
Allocate memory for rows.
int db_free_columns (db1_res_t *_r)
Release memory used by columns.
int db_free_result (db1_res_t *_r)
Release memory used by a result structure.
int db_free_rows (db1_res_t *_r)
Release memory used by rows in a result structure.
db1_res_t * db_new_result (void)
Create a new result structure and initialize it.

Detailed Description

Definition in file srdb1/db_res.c.

Function Documentation

int db_allocate_columns	(	db1_res_t *	_r,
		const unsigned int	cols
	)			`[inline]`

If no more memory is available for the allocation of the types then the already allocated memory for the names is freed.

Parameters:

	_r	filled result set
	cols	number of columns

Returns:: zero on success, negative on errors

Definition at line 146 of file srdb1/db_res.c.

References RES_NAMES, and RES_TYPES.

Referenced by db_mysql_get_columns(), and db_postgres_get_columns().

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int db_allocate_rows ( db1_res_t * _res ) [inline]

Parameters:

_res

result set

Returns:: zero on success, negative on errors

Definition at line 176 of file srdb1/db_res.c.

References RES_ROW_N, and RES_ROWS.

Referenced by db_mysql_convert_rows(), and db_postgres_convert_rows().

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int db_free_columns ( db1_res_t * _r ) [inline]

This methods assumes that the string values holding the column names are in memory allocated from the database driver, and thus must be not freed here.

Parameters:

_r

the result that should be released