dbcolumns.c File Reference

Vector library - DB info on vectors maps. More...

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <grass/glocale.h>
#include <grass/gis.h>
#include <grass/Vect.h>
#include <grass/dbmi.h>

Include dependency graph for dbcolumns.c:

Go to the source code of this file.

Functions
const char *	Vect_get_column_names (struct Map_info *Map, int field)
	Fetches list of DB column names of vector map attribute table.
const char *	Vect_get_column_types (struct Map_info *Map, int field)
	Fetches list of DB column types of vector map attribute table.
const char *	Vect_get_column_names_types (struct Map_info *Map, int field)
	Fetches list of DB column names and types of vector map attribute table.

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Detailed Description

Vector library - DB info on vectors maps.

Higher level functions for reading/writing/manipulating vectors.

(C) 2005-2008 by the GRASS Development Team

This program is free software under the GNU General Public License (>=v2). Read the file COPYING that comes with GRASS for details.

Author:

Markus Neteler

Date:

2005-2008

Definition in file dbcolumns.c.

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Function Documentation

const char* Vect_get_column_names	(	struct Map_info *	Map,
		int	field
	)

Fetches list of DB column names of vector map attribute table.

Parameters:

	Map	vector map
	field	layer number

Returns:

list of column(s) names on success

NULL on error

Definition at line 40 of file dbcolumns.c.

References Vect_get_field(), and Vect_get_num_dblinks().

const char* Vect_get_column_names_types	(	struct Map_info *	Map,
		int	field
	)

Fetches list of DB column names and types of vector map attribute table.

Parameters:

	Map	vector map
	field	layer number

Returns:

list of column(s) types on success NULL on error

Definition at line 161 of file dbcolumns.c.

References Vect_get_field(), and Vect_get_num_dblinks().

const char* Vect_get_column_types	(	struct Map_info *	Map,
		int	field
	)

Fetches list of DB column types of vector map attribute table.

Parameters:

	Map	vector map
	field	layer number

Returns:

list of column(s) types on success

NULL on error

Definition at line 99 of file dbcolumns.c.

References Vect_get_field(), and Vect_get_num_dblinks().