Struct GeometryCapacity

pub struct GeometryCapacity { /* private fields */ }

A counter for the buffer sizes of a GeometryArray.

This can be used to reduce allocations by allocating once for exactly the array size you need.

Implementations

impl GeometryCapacity

pub fn new( nulls: usize, points: [usize; 4], line_strings: [LineStringCapacity; 4], polygons: [PolygonCapacity; 4], mpoints: [MultiPointCapacity; 4], mline_strings: [MultiLineStringCapacity; 4], mpolygons: [MultiPolygonCapacity; 4], gcs: [GeometryCollectionCapacity; 4], ) -> Self

Create a new capacity with known sizes.

Note that the ordering within each array must be XY, XYZ, XYM, XYZM.

pub fn new_empty() -> Self

Create a new empty capacity.

pub fn with_prefer_multi(self, prefer_multi: bool) -> Self

Set whether this capacity counter should prefer allocating “single-type” geometries like Point/LineString/Polygon in the arrays of their “Multi” counterparts.

pub fn is_empty(&self) -> bool

Return true if the capacity is empty.

pub fn total_num_geoms(&self) -> usize

The total number of geometries across all geometry types.

pub fn point(&self, dim: Dimension) -> usize

Access point capacity

pub fn line_string(&self, dim: Dimension) -> LineStringCapacity

Access LineString capacity

pub fn polygon(&self, dim: Dimension) -> PolygonCapacity

Access Polygon capacity

pub fn multi_point(&self, dim: Dimension) -> MultiPointCapacity

Access MultiPoint capacity

pub fn multi_line_string(&self, dim: Dimension) -> MultiLineStringCapacity

Access point capacity

pub fn multi_polygon(&self, dim: Dimension) -> MultiPolygonCapacity

Access point capacity

pub fn geometry_collection(&self, dim: Dimension) -> GeometryCollectionCapacity

Access GeometryCollection capacity

pub fn add_geometry<T: WktNum>( &mut self, geom: Option<&impl GeometryTrait<T = T>>, ) -> GeoArrowResult<()>

Add the capacity of the given Geometry

pub fn from_geometries<'a, T: WktNum>( geoms: impl Iterator<Item = Option<&'a (impl GeometryTrait<T = T> + 'a)>>, ) -> GeoArrowResult<Self>

Construct a new counter pre-filled with the given geometries

pub fn num_bytes(&self) -> usize

The number of bytes an array with this capacity would occupy.

Trait Implementations

impl AddAssign for GeometryCapacity

fn add_assign(&mut self, rhs: Self)

Performs the += operation.

impl Clone for GeometryCapacity

fn clone(&self) -> GeometryCapacity

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GeometryCapacity

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for GeometryCapacity

fn default() -> GeometryCapacity

Returns the “default value” for a type.

impl Copy for GeometryCapacity