Skip to main content

Analyzer

Struct Analyzer 

Source
pub struct Analyzer { /* private fields */ }
Expand description

The text-analysis pipeline: normalize → tokenize → stop-word removal → optional stemming.

One Analyzer is configured per branch and used for both indexing and querying, so an indexed term and the query term that should match it pass through identical transformations. Build one with Analyzer::builder; Analyzer::new gives the English default (default stop words, no stemming).

Implementations§

Source§

impl Analyzer

Source

pub fn new() -> Self

The English-default analyzer: default English stop words, stemming off.

Source

pub fn builder() -> AnalyzerBuilder

Start building a customized analyzer.

Source

pub fn default_language(&self) -> Language

The language applied to text whose tag is absent or unrecognized.

Source

pub fn analyze(&self, text: &str, lang_tag: Option<&str>) -> Vec<Term>

Run the pipeline over text, producing its ordered terms.

lang_tag is the text’s optional BCP-47 language tag. When present and recognized it selects the stemmer and stop-word list; otherwise the analyzer’s default_language applies.

Duplicate terms are preserved (term frequency matters for scoring), in their original order.

Trait Implementations§

Source§

impl Clone for Analyzer

Source§

fn clone(&self) -> Analyzer

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
Source§

impl Debug for Analyzer

Source§

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

Formats the value using the given formatter. Read more
Source§

impl Default for Analyzer

Source§

fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

Blanket Implementations§

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> CloneToUninit for T
where T: Clone,

Source§

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

impl<T> ToOwned for T
where T: Clone,

Source§

type Owned = T

The resulting type after obtaining ownership.
Source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
Source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.