Trait geo_postgis::FromPostgis [−][src]
pub trait FromPostgis<T> { fn from_postgis(_: T) -> Self; }
Creates geometry from a PostGIS type.
Note that PostGIS databases can store data under any spatial reference system - not just WGS84. No attempt is made to convert data between reference systems.
Required methods
fn from_postgis(_: T) -> Self
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Implementations on Foreign Types
impl<'a, T> FromPostgis<&'a T> for Point<f64> where
T: Point,
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T: Point,
fn from_postgis(pt: &'a T) -> Self
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impl<'a, T> FromPostgis<&'a T> for LineString<f64> where
T: LineString<'a>,
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T: LineString<'a>,
fn from_postgis(ls: &'a T) -> Self
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impl<'a, T> FromPostgis<&'a T> for Option<Polygon<f64>> where
T: Polygon<'a>,
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T: Polygon<'a>,
fn from_postgis(poly: &'a T) -> Self
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This returns an Option
, because it’s possible for a PostGIS Polygon
to contain zero rings, which makes for an invalid geo::Polygon
.
impl<'a, T> FromPostgis<&'a T> for MultiPoint<f64> where
T: MultiPoint<'a>,
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T: MultiPoint<'a>,
fn from_postgis(mp: &'a T) -> Self
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impl<'a, T> FromPostgis<&'a T> for MultiLineString<f64> where
T: MultiLineString<'a>,
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T: MultiLineString<'a>,
fn from_postgis(mp: &'a T) -> Self
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impl<'a, T> FromPostgis<&'a T> for MultiPolygon<f64> where
T: MultiPolygon<'a>,
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T: MultiPolygon<'a>,
fn from_postgis(mp: &'a T) -> Self
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This implementation discards PostGIS polygons that don’t convert
(return None
when from_postgis()
is called on them).
impl<'a, T> FromPostgis<&'a GeometryCollectionT<T>> for GeometryCollection<f64> where
T: Point + EwkbRead,
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T: Point + EwkbRead,
fn from_postgis(gc: &'a GeometryCollectionT<T>) -> Self
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This implementation discards geometries that don’t convert
(return None
when from_postgis()
is called on them).
impl<'a, T> FromPostgis<&'a GeometryT<T>> for Option<Geometry<f64>> where
T: Point + EwkbRead,
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T: Point + EwkbRead,
fn from_postgis(geo: &'a GeometryT<T>) -> Self
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This returns an Option
, because the supplied geometry
could be an invalid Polygon
.