Struct datafusion::execution::registry::MemoryFunctionRegistry

pub struct MemoryFunctionRegistry { /* private fields */ }

A FunctionRegistry that uses in memory HashMaps

Implementations

impl MemoryFunctionRegistry

pub fn new() -> MemoryFunctionRegistry

Trait Implementations

impl Debug for MemoryFunctionRegistry

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

Formats the value using the given formatter.

impl Default for MemoryFunctionRegistry

fn default() -> MemoryFunctionRegistry

Returns the “default value” for a type.

impl FunctionRegistry for MemoryFunctionRegistry

fn udfs(&self) -> HashSet<String>

Set of all available udfs.

fn udf(&self, name: &str) -> Result<Arc<ScalarUDF>, DataFusionError>

Returns a reference to the user defined scalar function (udf) named name.

fn udaf(&self, name: &str) -> Result<Arc<AggregateUDF>, DataFusionError>

Returns a reference to the user defined aggregate function (udaf) named name.

fn udwf(&self, name: &str) -> Result<Arc<WindowUDF>, DataFusionError>

Returns a reference to the user defined window function (udwf) named name.

fn register_udf( &mut self, udf: Arc<ScalarUDF> ) -> Result<Option<Arc<ScalarUDF>>, DataFusionError>

Registers a new ScalarUDF, returning any previously registered implementation.

fn register_udaf( &mut self, _udaf: Arc<AggregateUDF> ) -> Result<Option<Arc<AggregateUDF>>, DataFusionError>

Registers a new AggregateUDF, returning any previously registered implementation.

fn register_udwf( &mut self, _udaf: Arc<WindowUDF> ) -> Result<Option<Arc<WindowUDF>>, DataFusionError>

Registers a new WindowUDF, returning any previously registered implementation.