Trait AsGeoArrowArray

pub trait AsGeoArrowArray {
    // Required methods
    fn as_point_opt(&self) -> Option<&PointArray>;
    fn as_line_string_opt(&self) -> Option<&LineStringArray>;
    fn as_polygon_opt(&self) -> Option<&PolygonArray>;
    fn as_multi_point_opt(&self) -> Option<&MultiPointArray>;
    fn as_multi_line_string_opt(&self) -> Option<&MultiLineStringArray>;
    fn as_multi_polygon_opt(&self) -> Option<&MultiPolygonArray>;
    fn as_geometry_collection_opt(&self) -> Option<&GeometryCollectionArray>;
    fn as_rect_opt(&self) -> Option<&RectArray>;
    fn as_geometry_opt(&self) -> Option<&GeometryArray>;
    fn as_wkb_opt<O: OffsetSizeTrait>(&self) -> Option<&GenericWkbArray<O>>;
    fn as_wkb_view_opt(&self) -> Option<&WkbViewArray>;
    fn as_wkt_opt<O: OffsetSizeTrait>(&self) -> Option<&GenericWktArray<O>>;
    fn as_wkt_view_opt(&self) -> Option<&WktViewArray>;

    // Provided methods
    fn as_point(&self) -> &PointArray { ... }
    fn as_line_string(&self) -> &LineStringArray { ... }
    fn as_polygon(&self) -> &PolygonArray { ... }
    fn as_multi_point(&self) -> &MultiPointArray { ... }
    fn as_multi_line_string(&self) -> &MultiLineStringArray { ... }
    fn as_multi_polygon(&self) -> &MultiPolygonArray { ... }
    fn as_geometry_collection(&self) -> &GeometryCollectionArray { ... }
    fn as_rect(&self) -> &RectArray { ... }
    fn as_geometry(&self) -> &GeometryArray { ... }
    fn as_wkb<O: OffsetSizeTrait>(&self) -> &GenericWkbArray<O> { ... }
    fn as_wkb_view(&self) -> &WkbViewArray { ... }
    fn as_wkt<O: OffsetSizeTrait>(&self) -> &GenericWktArray<O> { ... }
    fn as_wkt_view(&self) -> &WktViewArray { ... }
}

Helpers for downcasting a GeoArrowArray to a concrete implementation.

use std::sync::Arc;
use arrow_array::{Int32Array, RecordBatch};
use arrow_schema::{Schema, Field, DataType, ArrowError};
use geo_types::point;

use geoarrow_array::array::PointArray;
use geoarrow_array::builder::PointBuilder;
use geoarrow_array::cast::AsGeoArrowArray;
use geoarrow_array::GeoArrowArray;
use geo_traits::CoordTrait;
use geoarrow_schema::{Dimension, PointType};

let point1 = point!(x: 1., y: 2.);
let point2 = point!(x: 3., y: 4.);
let point3 = point!(x: 5., y: 6.);
let geoms = [point1, point2, point3];

let geom_type = PointType::new(Dimension::XY, Default::default());
let point_array = PointBuilder::from_points(geoms.iter(), geom_type).finish();

let generic_array: Arc<dyn GeoArrowArray> = Arc::new(point_array.clone());

let point_array2 = generic_array.as_point();
assert_eq!(&point_array, point_array2);

Required Methods

fn as_point_opt(&self) -> Option<&PointArray>

Downcast this to a PointArray returning None if not possible

fn as_line_string_opt(&self) -> Option<&LineStringArray>

Downcast this to a LineStringArray with i32 offsets returning None if not possible

fn as_polygon_opt(&self) -> Option<&PolygonArray>

Downcast this to a PolygonArray with i32 offsets returning None if not possible

fn as_multi_point_opt(&self) -> Option<&MultiPointArray>

Downcast this to a MultiPointArray with i32 offsets returning None if not possible

fn as_multi_line_string_opt(&self) -> Option<&MultiLineStringArray>

Downcast this to a MultiLineStringArray with i32 offsets returning None if not possible

fn as_multi_polygon_opt(&self) -> Option<&MultiPolygonArray>

Downcast this to a MultiPolygonArray with i32 offsets returning None if not possible

fn as_geometry_collection_opt(&self) -> Option<&GeometryCollectionArray>

Downcast this to a GeometryCollectionArray with i32 offsets returning None if not possible

fn as_rect_opt(&self) -> Option<&RectArray>

Downcast this to a RectArray returning None if not possible

fn as_geometry_opt(&self) -> Option<&GeometryArray>

Downcast this to a GeometryArray returning None if not possible

fn as_wkb_opt<O: OffsetSizeTrait>(&self) -> Option<&GenericWkbArray<O>>

Downcast this to a GenericWkbArray with O offsets returning None if not possible

fn as_wkb_view_opt(&self) -> Option<&WkbViewArray>

Downcast this to a WkbViewArray returning None if not possible

fn as_wkt_opt<O: OffsetSizeTrait>(&self) -> Option<&GenericWktArray<O>>

Downcast this to a GenericWktArray with O offsets returning None if not possible

fn as_wkt_view_opt(&self) -> Option<&WktViewArray>

Downcast this to a WktViewArray returning None if not possible

Provided Methods

fn as_point(&self) -> &PointArray

Downcast this to a PointArray panicking if not possible

fn as_line_string(&self) -> &LineStringArray

Downcast this to a LineStringArray with i32 offsets panicking if not possible

fn as_polygon(&self) -> &PolygonArray

Downcast this to a PolygonArray with i32 offsets panicking if not possible

fn as_multi_point(&self) -> &MultiPointArray

Downcast this to a MultiPointArray with i32 offsets panicking if not possible

fn as_multi_line_string(&self) -> &MultiLineStringArray

Downcast this to a MultiLineStringArray with i32 offsets panicking if not possible

fn as_multi_polygon(&self) -> &MultiPolygonArray

Downcast this to a MultiPolygonArray with i32 offsets panicking if not possible

fn as_geometry_collection(&self) -> &GeometryCollectionArray

Downcast this to a GeometryCollectionArray with i32 offsets panicking if not possible

fn as_rect(&self) -> &RectArray

Downcast this to a RectArray panicking if not possible

fn as_geometry(&self) -> &GeometryArray

Downcast this to a GeometryArray panicking if not possible

fn as_wkb<O: OffsetSizeTrait>(&self) -> &GenericWkbArray<O>

Downcast this to a GenericWkbArray with O offsets panicking if not possible

fn as_wkb_view(&self) -> &WkbViewArray

Downcast this to a WkbViewArray panicking if not possible

fn as_wkt<O: OffsetSizeTrait>(&self) -> &GenericWktArray<O>

Downcast this to a GenericWktArray with O offsets panicking if not possible

fn as_wkt_view(&self) -> &WktViewArray

Downcast this to a WktViewArray panicking if not possible

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl AsGeoArrowArray for Arc<dyn GeoArrowArray>

fn as_point_opt(&self) -> Option<&PointArray>

fn as_line_string_opt(&self) -> Option<&LineStringArray>

fn as_polygon_opt(&self) -> Option<&PolygonArray>

fn as_multi_point_opt(&self) -> Option<&MultiPointArray>

fn as_multi_line_string_opt(&self) -> Option<&MultiLineStringArray>

fn as_multi_polygon_opt(&self) -> Option<&MultiPolygonArray>

fn as_geometry_collection_opt(&self) -> Option<&GeometryCollectionArray>

fn as_rect_opt(&self) -> Option<&RectArray>

fn as_geometry_opt(&self) -> Option<&GeometryArray>

fn as_wkb_opt<O: OffsetSizeTrait>(&self) -> Option<&GenericWkbArray<O>>

fn as_wkb_view_opt(&self) -> Option<&WkbViewArray>

fn as_wkt_opt<O: OffsetSizeTrait>(&self) -> Option<&GenericWktArray<O>>

fn as_wkt_view_opt(&self) -> Option<&WktViewArray>

Implementors

impl AsGeoArrowArray for dyn GeoArrowArray + '_