OGRErr OGRLayerWithTransaction::DeleteField( int iField )
{
if( !m_poDecoratedLayer ) return OGRERR_FAILURE;
OGRErr eErr = m_poDecoratedLayer->DeleteField(iField);
if( m_poFeatureDefn && eErr == OGRERR_NONE )
m_poFeatureDefn->DeleteFieldDefn(iField);
return eErr;
}
bool OGRGeoJSONReader::GenerateFeatureDefn( json_object* poObj )
{
OGRFeatureDefn* poDefn = poLayer_->GetLayerDefn();
CPLAssert( NULL != poDefn );
bool bSuccess = false;
/* -------------------------------------------------------------------- */
/* Read collection of properties. */
/* -------------------------------------------------------------------- */
json_object* poObjProps = NULL;
poObjProps = OGRGeoJSONFindMemberByName( poObj, "properties" );
if( NULL != poObjProps &&
json_object_get_type(poObjProps) == json_type_object )
{
if (bIsGeocouchSpatiallistFormat)
{
poObjProps = json_object_object_get(poObjProps, "properties");
if( NULL == poObjProps ||
json_object_get_type(poObjProps) != json_type_object )
{
return true;
}
}
json_object_iter it;
it.key = NULL;
it.val = NULL;
it.entry = NULL;
json_object_object_foreachC( poObjProps, it )
{
int nFldIndex = poDefn->GetFieldIndex( it.key );
if( -1 == nFldIndex )
{
/* Detect the special kind of GeoJSON output by a spatiallist of GeoCouch */
/* such as http://gd.iriscouch.com/cphosm/_design/geo/_rewrite/data?bbox=12.53%2C55.73%2C12.54%2C55.73 */
if (strcmp(it.key, "_id") == 0)
bFoundId = true;
else if (bFoundId && strcmp(it.key, "_rev") == 0)
bFoundRev = true;
else if (bFoundRev && strcmp(it.key, "type") == 0 &&
it.val != NULL && json_object_get_type(it.val) == json_type_string &&
strcmp(json_object_get_string(it.val), "Feature") == 0)
bFoundTypeFeature = true;
else if (bFoundTypeFeature && strcmp(it.key, "properties") == 0 &&
it.val != NULL && json_object_get_type(it.val) == json_type_object)
{
if (bFlattenGeocouchSpatiallistFormat < 0)
bFlattenGeocouchSpatiallistFormat = CSLTestBoolean(
CPLGetConfigOption("GEOJSON_FLATTEN_GEOCOUCH", "TRUE"));
if (bFlattenGeocouchSpatiallistFormat)
{
poDefn->DeleteFieldDefn(poDefn->GetFieldIndex("type"));
bIsGeocouchSpatiallistFormat = true;
return GenerateFeatureDefn(poObj);
}
}
OGRFieldDefn fldDefn( it.key,
GeoJSONPropertyToFieldType( it.val ) );
poDefn->AddFieldDefn( &fldDefn );
}
else
{
OGRFieldDefn* poFDefn = poDefn->GetFieldDefn(nFldIndex);
OGRFieldType eType = poFDefn->GetType();
if( eType == OFTInteger )
{
OGRFieldType eNewType = GeoJSONPropertyToFieldType( it.val );
if( eNewType == OFTReal )
poFDefn->SetType(eNewType);
}
}
}
bSuccess = true; // SUCCESS
}
