Trait DataFrameReaderBackend 

pub trait DataFrameReaderBackend: Send + Sync {
    // Required methods
    fn csv(&self, path: &Path) -> Result<Box<dyn DataFrameBackend>, EngineError>;
    fn parquet(
        &self,
        path: &Path,
    ) -> Result<Box<dyn DataFrameBackend>, EngineError>;
    fn json(
        &self,
        path: &Path,
    ) -> Result<Box<dyn DataFrameBackend>, EngineError>;
    fn table(
        &self,
        name: &str,
    ) -> Result<Box<dyn DataFrameBackend>, EngineError>;
}

Backend for reading files into a DataFrame.

Required Methods

fn csv(&self, path: &Path) -> Result<Box<dyn DataFrameBackend>, EngineError>

fn parquet(&self, path: &Path) -> Result<Box<dyn DataFrameBackend>, EngineError>

fn json(&self, path: &Path) -> Result<Box<dyn DataFrameBackend>, EngineError>

fn table(&self, name: &str) -> Result<Box<dyn DataFrameBackend>, EngineError>

Implementors