Method single_column

nodedb-spatial/src/geo_meta.rs:48–72

Create metadata for a single geometry column.

(
        column_name: &str,
        geometry_types: Vec<String>,
        bbox: Option<[f64; 4]>,
    )

impl GeoParquetMetadata {
    /// Create metadata for a single geometry column.
    pub fn single_column(
        column_name: &str,
        geometry_types: Vec<String>,
        bbox: Option<[f64; 4]>,
    ) -> Self {
        let mut columns = HashMap::new();
        columns.insert(
            column_name.to_string(),
            GeoParquetColumnMeta {
                encoding: "WKB".to_string(),
                geometry_types,
                crs: serde_json::json!({
                    "type": "GeographicCRS",
                    "name": "WGS 84",
                    "id": { "authority": "EPSG", "code": 4326 }
                }),
                bbox,
            },
        );
        Self {
            version: "1.1.0".to_string(),
            primary_column: column_name.to_string(),
            columns,
        }
    }

    /// Serialize to JSON string for Parquet file metadata.
    pub fn to_json(&self) -> Result<String, sonic_rs::Error> {