Struct grenad::Merger

pub struct Merger<R, MF> { /* fields omitted */ }

A struct you can use to merge entries from the sources by using the merge function provided to merge values when entries have the same key.

Implementations

impl<R, MF> Merger<R, MF>

pub fn builder(merge: MF) -> MergerBuilder<R, MF>

Creates a MergerBuilder from a merge function, it can be used to configure your Merger with the sources to merge.

impl<R: Read + Seek, MF> Merger<R, MF>

pub fn into_stream_merger_iter(self) -> Result<MergerIter<R, MF>, Error>

Consumes this Merger and outputs a stream of the merged entries in key-order.

impl<R, MF, U> Merger<R, MF> where
    R: Read + Seek,
    MF: for<'a> Fn(&[u8], &[Cow<'a, [u8]>]) -> Result<Cow<'a, [u8]>, U>, 

pub fn write_into_stream_writer<W: Write>(
    self,
    writer: &mut Writer<W>
) -> Result<(), Error<U>>

Consumes this Merger and streams the entries to the Writer given in parameter.