Enum EmbeddingBackend 

pub enum EmbeddingBackend {
    Mock(MockEmbeddingProvider),
    TfIdf(TfIdfEmbeddingProvider),
}

Enum dispatch for embedding providers.

Prefer using this enum over Arc<dyn EmbeddingProvider> trait objects. It avoids dynamic dispatch overhead and is easier to reason about.

Variants

Mock(MockEmbeddingProvider)

Mock provider for testing (deterministic hash-based embeddings)

TfIdf(TfIdfEmbeddingProvider)

TF-IDF based embedding provider (no external dependencies)

Implementations

impl EmbeddingBackend

pub async fn embed(&self, text: &str) -> Result<Vec<f32>>

Generate embedding for text

pub async fn embed_batch(&self, texts: &[String]) -> Result<Vec<Vec<f32>>>

Generate embeddings for multiple texts

pub fn dimension(&self) -> usize

Get embedding dimension