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/***************************************************************************
* location.c
*
* Copyright 2005 Ian McIntosh
* ian_mcintosh@linuxadvocate.org
****************************************************************************/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdlib.h>
#include <gtk/gtk.h>
#include "main.h"
#include "map.h"
#include "location.h"
#include "db.h"
gboolean location_lookup_attribute_name(const gchar* pszName, gint* pnReturnID);
struct {
} g_Location;
void location_init()
{
}
// get a new point struct from the allocator
gboolean location_alloc(location_t** ppLocation)
{
g_return_val_if_fail(ppLocation != NULL, FALSE);
g_return_val_if_fail(*ppLocation == NULL, FALSE); // must be a pointer to a NULL pointer
location_t* pNew = g_slice_new0(location_t);
if(pNew) {
*ppLocation = pNew;
return TRUE;
}
return FALSE;
}
// return a location_t struct to the allocator
void location_free(location_t* pLocation)
{
g_return_if_fail(pLocation != NULL);
g_free(pLocation->pszName);
// give back to allocator
g_slice_free(location_t, pLocation);
}
gboolean location_insert(gint nLocationSetID, mappoint_t* pPoint, gint* pnReturnID)
{
g_assert(pPoint != NULL);
g_assert(nLocationSetID > 0);
g_assert(pnReturnID != NULL);
g_assert(*pnReturnID == 0); // must be pointer to an int==0
// create query SQL
gchar* pszSQL = g_strdup_printf(
"INSERT INTO Location SET ID=NULL, LocationSetID=%d, Coordinates=GeometryFromText('POINT(%f %f)');",
nLocationSetID, pPoint->fLatitude, pPoint->fLongitude);
db_query(pszSQL, NULL);
g_free(pszSQL);
*pnReturnID = db_get_last_insert_id();
return TRUE;
}
gboolean location_insert_attribute_name(const gchar* pszName, gint* pnReturnID)
{
g_assert(pszName != NULL);
gchar* pszSafeName = db_make_escaped_string(pszName);
gchar* pszSQL = g_strdup_printf(
"INSERT INTO LocationAttributeName"
" SET Name='%s';",
pszSafeName
);
gboolean bResult = db_query(pszSQL, NULL);
g_free(pszSQL);
db_free_escaped_string(pszSafeName);
// inserted?
if(bResult == TRUE) {
if(pnReturnID) {
*pnReturnID = db_get_last_insert_id();
g_print("returning %d\n", *pnReturnID);
}
return TRUE;
}
else {
// couldn't insert? try to find existing
if(location_lookup_attribute_name(pszName, pnReturnID)) {
return TRUE;
}
return FALSE;
}
}
gboolean location_lookup_attribute_name(const gchar* pszName, gint* pnReturnID)
{
g_assert(pszName != NULL);
gchar* pszSafeName = db_make_escaped_string(pszName);
gchar* pszSQL = g_strdup_printf("SELECT ID FROM LocationAttributeName WHERE Name='%s';", pszSafeName);
db_resultset_t* pResultSet = NULL;
db_query(pszSQL, &pResultSet);
g_free(pszSQL);
db_free_escaped_string(pszSafeName);
db_row_t aRow = db_fetch_row(pResultSet);
if(aRow != NULL) {
if(pnReturnID) {
*pnReturnID = atoi(aRow[0]);
}
return TRUE;
}
return FALSE;
}
gboolean location_insert_attribute(gint nLocationID, gint nAttributeID, const gchar* pszValue, gint* pnReturnID)
{
g_assert(nLocationID != 0);
g_assert(nAttributeID != 0);
g_assert(pszValue != NULL);
gchar* pszSafeValue = db_make_escaped_string(pszValue);
gchar* pszSQL = g_strdup_printf(
"INSERT INTO LocationAttributeValue"
" SET LocationID=%d, AttributeNameID=%d, Value='%s';",
nLocationID, nAttributeID, pszSafeValue
);
db_query(pszSQL, NULL);
g_free(pszSQL);
db_free_escaped_string(pszSafeValue);
if(pnReturnID) {
*pnReturnID = db_get_last_insert_id();
}
return TRUE;
}
gboolean location_load(gint nLocationID, mappoint_t* pReturnCoordinates, gint* pnReturnLocationSetID)
{
db_resultset_t* pResultSet = NULL;
db_row_t aRow;
gchar* pszSQL = g_strdup_printf(
"SELECT LocationSetID, AsBinary(Coordinates)"
" FROM Location"
" WHERE ID=%d", nLocationID);
db_query(pszSQL, &pResultSet);
g_free(pszSQL);
g_return_val_if_fail(pResultSet, FALSE);
aRow = db_fetch_row(pResultSet);
if(aRow) {
if(pnReturnLocationSetID != NULL) {
*pnReturnLocationSetID = atoi(aRow[0]);
}
if(pReturnCoordinates != NULL) {
db_parse_wkb_point(aRow[1], pReturnCoordinates);
}
db_free_result(pResultSet);
return TRUE;
}
else {
db_free_result(pResultSet);
return FALSE;
}
}
void location_load_attributes(gint nLocationID, GPtrArray* pAttributeArray)
{
db_resultset_t* pResultSet = NULL;
db_row_t aRow;
g_assert(pAttributeArray->len == 0);
gchar* pszSQL = g_strdup_printf(
"SELECT LocationAttributeValue.ID, LocationAttributeName.Name, LocationAttributeValue.Value"
" FROM LocationAttributeValue"
" LEFT JOIN LocationAttributeName ON (LocationAttributeValue.AttributeNameID=LocationAttributeName.ID)"
" WHERE LocationAttributeValue.LocationID=%d",
nLocationID
);
db_query(pszSQL, &pResultSet);
g_free(pszSQL);
if(pResultSet) {
while((aRow = db_fetch_row(pResultSet))) {
locationattribute_t* pNew = g_new0(locationattribute_t, 1);
pNew->nValueID = atoi(aRow[0]);
pNew->pszName = g_strdup((aRow[1] == NULL) ? "" : aRow[1]);
pNew->pszValue = g_strdup((aRow[2] == NULL) ? "" : aRow[2]);
g_ptr_array_add(pAttributeArray, pNew);
}
db_free_result(pResultSet);
}
}
void location_free_attributes(GPtrArray* pAttributeArray)
{
gint i;
for(i=(pAttributeArray->len-1) ; i>=0 ; i--) {
locationattribute_t* pAttribute = g_ptr_array_remove_index_fast(pAttributeArray, i);
g_free(pAttribute->pszName);
g_free(pAttribute->pszValue);
g_free(pAttribute);
}
g_assert(pAttributeArray->len == 0);
}
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