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use geo_types::{
Coordinate, Geometry, GeometryCollection, Line, LineString, MultiLineString, MultiPoint,
MultiPolygon, Point, Polygon,
};
use postgis::ewkb;
pub trait ToPostgis<T> {
fn to_postgis_with_srid(&self, srid: Option<i32>) -> T;
fn to_postgis_wgs84(&self) -> T {
self.to_postgis_with_srid(Some(4326))
}
}
impl ToPostgis<ewkb::Point> for Coordinate {
fn to_postgis_with_srid(&self, srid: Option<i32>) -> ewkb::Point {
ewkb::Point::new(self.x, self.y, srid)
}
}
impl ToPostgis<ewkb::Point> for Point {
fn to_postgis_with_srid(&self, srid: Option<i32>) -> ewkb::Point {
ewkb::Point::new(self.x(), self.y(), srid)
}
}
impl ToPostgis<ewkb::LineString> for Line {
fn to_postgis_with_srid(&self, srid: Option<i32>) -> ewkb::LineString {
let points = vec![
self.start_point().to_postgis_with_srid(srid),
self.end_point().to_postgis_with_srid(srid),
];
ewkb::LineString { points, srid }
}
}
impl ToPostgis<ewkb::Polygon> for Polygon<f64> {
fn to_postgis_with_srid(&self, srid: Option<i32>) -> ewkb::Polygon {
let rings = ::std::iter::once(self.exterior())
.chain(self.interiors().iter())
.map(|x| (*x).to_postgis_with_srid(srid))
.collect();
ewkb::Polygon { rings, srid }
}
}
macro_rules! to_postgis_impl {
($from:ident, $to:path, $name:ident) => {
impl ToPostgis<$to> for $from<f64> {
fn to_postgis_with_srid(&self, srid: Option<i32>) -> $to {
let $name = self
.0
.iter()
.map(|x| x.to_postgis_with_srid(srid))
.collect();
$to { $name, srid }
}
}
};
}
to_postgis_impl!(GeometryCollection, ewkb::GeometryCollection, geometries);
to_postgis_impl!(MultiPolygon, ewkb::MultiPolygon, polygons);
to_postgis_impl!(MultiLineString, ewkb::MultiLineString, lines);
to_postgis_impl!(MultiPoint, ewkb::MultiPoint, points);
to_postgis_impl!(LineString, ewkb::LineString, points);
impl ToPostgis<ewkb::Geometry> for Geometry {
fn to_postgis_with_srid(&self, srid: Option<i32>) -> ewkb::Geometry {
match *self {
Geometry::Point(ref p) => ewkb::GeometryT::Point(p.to_postgis_with_srid(srid)),
Geometry::Line(ref p) => ewkb::GeometryT::LineString(p.to_postgis_with_srid(srid)),
Geometry::LineString(ref p) => {
ewkb::GeometryT::LineString(p.to_postgis_with_srid(srid))
}
Geometry::Polygon(ref p) => ewkb::GeometryT::Polygon(p.to_postgis_with_srid(srid)),
Geometry::MultiPoint(ref p) => {
ewkb::GeometryT::MultiPoint(p.to_postgis_with_srid(srid))
}
Geometry::MultiLineString(ref p) => {
ewkb::GeometryT::MultiLineString(p.to_postgis_with_srid(srid))
}
Geometry::MultiPolygon(ref p) => {
ewkb::GeometryT::MultiPolygon(p.to_postgis_with_srid(srid))
}
Geometry::GeometryCollection(ref p) => {
ewkb::GeometryT::GeometryCollection(p.to_postgis_with_srid(srid))
}
Geometry::Rect(ref p) => {
ewkb::GeometryT::Polygon(p.to_polygon().to_postgis_with_srid(srid))
}
Geometry::Triangle(ref p) => {
ewkb::GeometryT::Polygon(p.to_polygon().to_postgis_with_srid(srid))
}
}
}
}