Struct IndexBuilder 

pub struct IndexBuilder { /* private fields */ }

A builder for opening or creating an Index.

Implementations

impl IndexBuilder

pub fn new() -> IndexBuilder

Create a new builder with a default configuration.

pub fn open<P1: AsRef<Path>, P2: AsRef<Path>>( &self, data_dir: P1, index_dir: P2, ) -> Result<Index>

Use the current configuration to open an existing index. If the index does not exist, or if there was a problem opening it, then this returns an error.

Generally, this method is cheap to call. It opens some file descriptors, but otherwise does no work.

data_dir should be the directory containing decompressed IMDb tsv files. See: https://www.imdb.com/interfaces/

index_dir should be the directory containing a previously created index using Index::create.

Note that settings for index creation are ignored.

pub fn create<P1: AsRef<Path>, P2: AsRef<Path>>( &self, data_dir: P1, index_dir: P2, ) -> Result<Index>

Use the current configuration to create a new index.

Calling this method is expensive, and one should expect this to take dozens of seconds or more to complete.

data_dir should be the directory containing decompressed IMDb tsv files. See: https://www.imdb.com/interfaces/

index_dir should be the directory containing a previously created index using Index::create.

This will overwrite any previous index that may have existed in index_dir.

pub fn ngram_type(&mut self, ngram_type: NgramType) -> &mut IndexBuilder

Set the type of ngram generation to use.

The default type is Window.

pub fn ngram_size(&mut self, ngram_size: usize) -> &mut IndexBuilder

Set the ngram size on this index.

When creating an index, ngrams with this size will be used.

Trait Implementations

impl Debug for IndexBuilder

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for IndexBuilder

fn default() -> IndexBuilder

Returns the “default value” for a type.