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. More...
const char *	Vect_get_column_types (struct Map_info *Map, int field)
	Fetches list of DB column types of vector map attribute table. More...
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. More...

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.

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 buf, db_close_database(), db_describe_table(), db_get_column_name(), db_get_table_column(), db_get_table_number_of_columns(), db_init_handle(), db_init_string(), db_open_database(), db_set_handle(), db_set_string(), db_shutdown_driver(), db_start_driver(), G_chop(), G_debug(), G_store(), NULL, sprintf(), 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 165 of file dbcolumns.c.

References buf, db_close_database(), db_describe_table(), db_get_column_name(), db_get_column_sqltype(), db_get_table_column(), db_get_table_number_of_columns(), db_init_handle(), db_init_string(), db_open_database(), db_set_handle(), db_set_string(), db_shutdown_driver(), db_sqltype_name(), db_start_driver(), G_chop(), G_debug(), G_store(), NULL, sprintf(), 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 101 of file dbcolumns.c.

References buf, db_close_database(), db_describe_table(), db_get_column_sqltype(), db_get_table_column(), db_get_table_number_of_columns(), db_init_handle(), db_init_string(), db_open_database(), db_set_handle(), db_set_string(), db_shutdown_driver(), db_sqltype_name(), db_start_driver(), G_chop(), G_debug(), G_store(), NULL, sprintf(), Vect_get_field(), and Vect_get_num_dblinks().