Trait csv_pipeline::Transform

pub trait Transform {
    fn name(&self) -> String;
    fn add_row(&mut self, headers: &Headers, row: &Row) -> Result<(), Error>;
    fn value(&self) -> String;

    fn hash(
        &self,
        _hasher: &mut DefaultHasher,
        _headers: &Headers,
        _row: &Row
    ) -> Result<(), Error> { ... }
}

For grouping and reducing rows.

Required Methods

fn name(&self) -> String

Get the resulting column name

fn add_row(&mut self, headers: &Headers, row: &Row) -> Result<(), Error>

Combine the row with the value

fn value(&self) -> String

Turn the current value to a string

Provided Methods

fn hash(
    &self,
    _hasher: &mut DefaultHasher,
    _headers: &Headers,
    _row: &Row
) -> Result<(), Error>

Add the row to the hasher to group this row separately from others

Implementors