Struct FeatureTable 

pub struct FeatureTable {
    pub name: String,
    pub geometry_column: String,
    pub srs_id: Option<i32>,
    pub schema: Vec<FieldDefinition>,
    pub features: Vec<FeatureRow>,
}

An in-memory representation of a GeoPackage feature table.

Holds the table schema and all feature rows that have been loaded.

Fields

name: String

Name of the feature table (matches gpkg_contents.table_name).

geometry_column: String

Name of the geometry column.

srs_id: Option<i32>

Spatial reference system ID, or None when unknown.

schema: Vec<FieldDefinition>

Column definitions (excludes the geometry column and FID).

features: Vec<FeatureRow>

Loaded feature rows.

Implementations

impl FeatureTable

pub fn new(name: impl Into<String>, geometry_column: impl Into<String>) -> Self

Create a new, empty feature table with the given name and geometry column.

pub fn feature_count(&self) -> usize

Return the number of loaded feature rows.

pub fn add_feature(&mut self, row: FeatureRow)

Append a feature row to the table.

pub fn get_feature(&self, fid: i64) -> Option<&FeatureRow>

Find a feature by its FID, or return None.

pub fn bbox(&self) -> Option<(f64, f64, f64, f64)>

Return the union bounding box of all feature geometries, or None when there are no geometries.

pub fn features_in_bbox( &self, min_x: f64, min_y: f64, max_x: f64, max_y: f64, ) -> Vec<&FeatureRow>

Return all features whose geometry bounding box intersects the query bbox.

Features with None geometry are excluded. The check is a simple AABB intersection test (not precise polygon intersection).

pub fn distinct_values(&self, field_name: &str) -> Vec<FieldValue>

Collect all distinct (non-Null) values for a named field across all features.

The returned vec is deduplicated by equality.

pub fn to_geojson(&self) -> String

Serialise the feature table as a GeoJSON FeatureCollection string.

Geometry None is encoded as "geometry":null.

Trait Implementations

impl Clone for FeatureTable

fn clone(&self) -> FeatureTable

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FeatureTable

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

Formats the value using the given formatter.