Trait tantivy::Postings[−][src]

pub trait Postings: DocSet + 'static {
    fn term_freq(&self) -> u32;
    fn positions_with_offset(&mut self, offset: u32, output: &mut Vec<u32>);

    fn positions(&mut self, output: &mut Vec<u32>) { ... }
}

Postings (also called inverted list)

For a given term, it is the list of doc ids of the doc containing the term. Optionally, for each document, it may also give access to the term frequency as well as the list of term positions.

Its main implementation is SegmentPostings, but other implementations mocking SegmentPostings exist, for merging segments or for testing.

Required Methods

`fn term_freq(&self) -> u32`

Returns the term frequency

`fn positions_with_offset(&mut self, offset: u32, output: &mut Vec<u32>)`

Returns the positions offseted with a given value. The output vector will be resized to the term_freq.

Provided Methods

`fn positions(&mut self, output: &mut Vec<u32>)`

Returns the positions of the term in the given document. The output vector will be resized to the term_freq.

Implementors

impl Postings for SegmentPostings
[src]