Struct parquet2::write::FileStreamer

pub struct FileStreamer<W: AsyncWrite + Unpin + Send> { /* private fields */ }

An interface to write a parquet file asynchronously. Use start to write the header, write to write a row group, and end to write the footer.

Implementations

impl<W: AsyncWrite + Unpin + Send> FileStreamer<W>

pub fn options(&self) -> &WriteOptions

The options assigned to the file

pub fn schema(&self) -> &SchemaDescriptor

The SchemaDescriptor assigned to this file

impl<W: AsyncWrite + Unpin + Send> FileStreamer<W>

pub fn new( writer: W, schema: SchemaDescriptor, options: WriteOptions, created_by: Option<String> ) -> Self

Returns a new FileStreamer.

pub async fn write<E>(&mut self, row_group: RowGroupIter<'_, E>) -> Result<()>

where Error: From<E>, E: Error,

Writes a row group to the file.

pub async fn end( &mut self, key_value_metadata: Option<Vec<KeyValue>> ) -> Result<u64>

Writes the footer of the parquet file. Returns the total size of the file and the underlying writer.

pub fn into_inner(self) -> W

Returns the underlying writer.