Struct bookdata::marc::flat_fields::FieldOutput

pub struct FieldOutput {
    rec_count: u32,
    writer: TableWriter<FieldRecord>,
}

Output for writing flat MARC fields to Parquet.

Fields

rec_count: u32

writer: TableWriter<FieldRecord>

Implementations

impl FieldOutput

pub fn new(writer: TableWriter<FieldRecord>) -> FieldOutput

Create a new output.

pub fn open<P: AsRef<Path>>(path: P) -> Result<FieldOutput>

Open a field output going to a file.

Trait Implementations

impl DataSink for FieldOutput

fn output_files(&self) -> Vec<PathBuf>

Get the output files for the sink.

fn input_files(&self) -> Vec<PathBuf>

Get auxillary input files for the sink.

impl ObjectWriter<MARCRecord> for FieldOutput

fn write_object(&mut self, rec: MARCRecord) -> Result<()>

Write one object.

fn finish(self) -> Result<usize>

Finish and close the target.

fn write_all_objects<I>(&mut self, objects: I) -> Result<usize>

where I: Iterator<Item = T>,

Write an iterator full of objects.

fn write_and_finish<I>(self, objects: I) -> Result<usize>

where I: Iterator<Item = T>,

Write an iterator of objects and finish the writer.

fn with_transform<F, T2>(self, transform: F) -> MapWriter<F, T2, T, Self>

where F: Fn(T2) -> Result<T>,

Wrap this object writer in a transformed writer.