db/dbmi_client/select.c File Reference

DBMI Library (client) - select records from table. More...

#include <stdlib.h>
#include <string.h>
#include <grass/gis.h>
#include <grass/dbmi.h>
#include <grass/glocale.h>

Include dependency graph for db/dbmi_client/select.c:

Go to the source code of this file.

Functions
int	db_select_int (dbDriver *driver, const char *tab, const char *col, const char *where, int **pval)
	Select array of ordered integers from table/column. More...
int	db_select_value (dbDriver *driver, const char *tab, const char *key, int id, const char *col, dbValue *val)
	Select one (first) value from table/column for key/id. More...
int	db_select_CatValArray (dbDriver *driver, const char *tab, const char *key, const char *col, const char *where, dbCatValArray *cvarr)
	Select pairs key/value to array, values are sorted by key (must be integer) More...
void	db_CatValArray_sort (dbCatValArray *arr)
	Sort key/value array by key. More...
int	db_CatValArray_sort_by_value (dbCatValArray *arr)
	Sort key/value array by value. More...
int	db_CatValArray_get_value (dbCatValArray *arr, int key, dbCatVal **cv)
	Find value by key. More...
int	db_CatValArray_get_value_int (dbCatValArray *arr, int key, int *val)
	Find value (integer) by key. More...
int	db_CatValArray_get_value_double (dbCatValArray *arr, int key, double *val)
	Find value (double) by key. More...

Detailed Description

DBMI Library (client) - select records from table.

(C) 1999-2008 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

Joel Jones (CERL/UIUC), Radim Blazek

Definition in file db/dbmi_client/select.c.

Function Documentation

db_CatValArray_get_value()

int db_CatValArray_get_value	(	dbCatValArray *	arr,
		int	key,
		dbCatVal **	cv
	)

Find value by key.

Parameters

	arr	dbCatValArray (key/value array)
	key	key value
[out]	cv	dbCatVal structure (key/value) to store within

Returns

DB_OK on success

DB_FAILED on error

Definition at line 466 of file db/dbmi_client/select.c.

db_CatValArray_get_value_double()

int db_CatValArray_get_value_double	(	dbCatValArray *	arr,
		int	key,
		double *	val
	)

Find value (double) by key.

Parameters

	arr	dbCatValArray (key/value array)
	key	key value
[out]	val	found value (double)

Returns

DB_OK on success

DB_FAILED on error

Definition at line 518 of file db/dbmi_client/select.c.

db_CatValArray_get_value_int()

int db_CatValArray_get_value_int	(	dbCatValArray *	arr,
		int	key,
		int *	val
	)

Find value (integer) by key.

Parameters

	arr	dbCatValArray (key/value array)
	key	key value
[out]	val	found value (integer)

Returns

DB_OK on success

DB_FAILED on error

Definition at line 492 of file db/dbmi_client/select.c.

db_CatValArray_sort()

void db_CatValArray_sort

(

dbCatValArray *

arr

)

Sort key/value array by key.

Parameters

[in,out]

arr

dbCatValArray (key/value array)

Definition at line 417 of file db/dbmi_client/select.c.

References dbCatValArray::n_values, and dbCatValArray::value.

db_CatValArray_sort_by_value()

int db_CatValArray_sort_by_value

(

dbCatValArray *

arr

)

Sort key/value array by value.

Parameters

[in,out]

arr

dbCatValArray (key/value array)

Returns

DB_OK on success

DB_FAILED on error

Definition at line 430 of file db/dbmi_client/select.c.

References dbCatValArray::ctype, DB_C_TYPE_INT, dbCatValArray::n_values, and dbCatValArray::value.

db_select_CatValArray()

int db_select_CatValArray	(	dbDriver *	driver,
		const char *	tab,
		const char *	key,
		const char *	col,
		const char *	where,
		dbCatValArray *	cvarr
	)

Select pairs key/value to array, values are sorted by key (must be integer)

Parameters

	driver	DB driver
	tab	table name
	key	key column name
	col	value column name
[out]	cvarr	dbCatValArray to store within

Returns

number of selected values

-1 on error

Definition at line 268 of file db/dbmi_client/select.c.

db_select_int()

int db_select_int	(	dbDriver *	driver,
		const char *	tab,
		const char *	col,
		const char *	where,
		int **	pval
	)

Select array of ordered integers from table/column.

Parameters

	driver	DB driver
	tab	table name
	col	column name
	where	where statement
[out]	pval	array of ordered integer values

Returns

number of selected values

-1 on error

Definition at line 103 of file db/dbmi_client/select.c.

Referenced by Vect_cats_set_constraint().

db_select_value()

int db_select_value	(	dbDriver *	driver,
		const char *	tab,
		const char *	key,
		int	id,
		const char *	col,
		dbValue *	val
	)

Select one (first) value from table/column for key/id.

Parameters

	driver	DB driver
	tab	table name
	key	key column name
	id	identifier in key column
	col	name of column to select the value from
[out]	val	dbValue to store within

Returns

number of selected values

-1 on error

Definition at line 204 of file db/dbmi_client/select.c.