Struct PatternStore 

pub struct PatternStore { /* private fields */ }

Store for decision patterns with cosine-similarity retrieval.

Patterns are stored in a HashMap keyed by pattern_id. The search method computes cosine similarity between the query feature vector and every stored pattern, returning the top-k results sorted by descending similarity.

Example

use entrenar::decision::{DecisionPattern, PatternStore};

let mut store = PatternStore::new();
store.add_pattern(DecisionPattern::new(
    "p1", "type fix", vec![1.0, 0.0, 0.0], 0.9, "type_error",
));

let results = store.search(&[1.0, 0.0, 0.0], 5);
assert_eq!(results.len(), 1);
assert_eq!(results[0].pattern_id, "p1");

Implementations

impl PatternStore

pub fn new() -> Self

Create an empty pattern store.

pub fn add_pattern(&mut self, pattern: DecisionPattern)

Add a pattern to the store.

If a pattern with the same pattern_id already exists it is replaced.

pub fn get_pattern(&self, id: &str) -> Option<&DecisionPattern>

Retrieve a pattern by its id.

pub fn search( &self, query_features: &[f32], top_k: usize, ) -> Vec<&DecisionPattern>

Search for the top-k patterns most similar to query_features.

Similarity is measured by cosine similarity between query_features and each pattern’s feature_weights. Patterns whose feature vector has a different length than the query, or whose norm is zero, receive a similarity of zero.

Returns results sorted by descending similarity, limited to top_k.

pub fn list_patterns(&self) -> Vec<&DecisionPattern>

List all patterns in the store (unordered).

pub fn remove_pattern(&mut self, id: &str) -> Option<DecisionPattern>

Remove a pattern by id. Returns the removed pattern if it existed.

pub fn len(&self) -> usize

Return the number of stored patterns.

pub fn is_empty(&self) -> bool

Return whether the store is empty.

Trait Implementations

impl Clone for PatternStore

fn clone(&self) -> PatternStore

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PatternStore

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

Formats the value using the given formatter.

impl Default for PatternStore

fn default() -> PatternStore

Returns the “default value” for a type.