Struct SchemaBridge 

pub struct SchemaBridge { /* private fields */ }

Schema bridge for converting between TOON and columnar formats

Implementations

impl SchemaBridge

pub fn new() -> Self

Create new schema bridge

pub fn register_schema(&mut self, schema: &SochSchema) -> Arc<ColumnMapping>

Register a schema and get its mapping

pub fn to_columnar(&self, table: &SochTable) -> Result<ColumnarTable>

Convert TOON table to columnar format

pub fn from_columnar( &self, columnar: &ColumnarTable, schema: &SochSchema, ) -> Result<SochTable>

Convert columnar table back to TOON format

pub fn project( &self, columnar: &ColumnarTable, columns: &[&str], ) -> Result<ColumnarTable>

Project specific columns from columnar table

pub fn filter<F>( &self, columnar: &ColumnarTable, column: &str, predicate: F, ) -> Result<Vec<usize>>

where F: Fn(&SochValue) -> bool,

Filter columnar table by predicate on a column

Trait Implementations

impl Default for SchemaBridge

fn default() -> Self

Returns the “default value” for a type.