Expand description
Geopackage geometry type encoding/decoding.
All geometry types implementing GeozeroGeometry can be encoded as Geopackage WKB geometry using wkb::Encode.
Geometry types implementing FromWkb can be decoded from Geopackage geometries using wkb::Decode.
§Usage example
Select geo-types geometries from a Geopackage:
use geozero::{wkb, ToWkt};
use sqlx::sqlite::SqlitePoolOptions;
let pool = SqlitePoolOptions::new()
.max_connections(5)
.connect("sqlite://points.gpkg")
.await?;
let row: (wkb::Decode<geo_types::Geometry<f64>>,) = sqlx::query_as("SELECT geom FROM pt2d")
.fetch_one(&pool)
.await?;
if let Some(geom) = row.0.geometry {
println!("{}", geom.to_wkt().unwrap());
}