README
- ::addChromaStore::add
- ::clearChromaStore::clear
- ::createChromaStore::create
- ::deleteChromaStore::delete
- ::lenChromaStore::len
- ::newChromaStore::new
- ::searchChromaStore::search

moonchroma

A Chroma vector store for moonbitstack/moonrag, over its REST API.

moonrag

chroma

vector-store

vector-database

moonbit

Download zip

Author

moonbitstack

Version

0.1.0

License

Apache-2.0

Repository

github.com/moonbitstack/moonrag

Last updated

9 hours ago

Downloads

#moonchroma

A Chroma vector store for moonrag, over its REST API. Native only: it opens sockets, so it is not built for js or wasm.

moon add moonbitstack/moonchroma

let store = @moonchroma.ChromaStore::new("http://127.0.0.1:8000", embedder, dimension=256)

It implements moonrag's VectorStore. Like the in-memory, SQLite and MySQL stores it recomputes the cosine in this process and ranks by the same Filter::matches, so its results agree with the other backends rather than trusting the server.

See this store's page, the guide and the API.

ChromaStore

source

pub struct ChromaStore {
  base : String
  tenant : String
  database : String
  collection : String
  embedder : &@moonbitstack/moonrag.Embedder
Embedder
  dimension : Int
  id : String
  counter : Int
}

impl VectorStore for ChromaStore

async fn add(self : ChromaStore, documents : Array[@moonbitstack/moonrag.Document
Document]) -> Array[String]

source

Embed documents, add them, and return the ids they are stored under.

async fn delete(self : ChromaStore, ids : ArrayView[String]) -> Unit

source

Delete the documents stored under ids. An id not present is not an error.

async fn search(self : ChromaStore, vector : ArrayView[Double], limit~ : Int, filter? : @moonbitstack/moonrag.Filter
Filter) -> Array[@moonbitstack/moonrag.Scored
Scored]

source

The best limit documents for vector, best first. Every document is read back with its embedding, then filtered, scored and ranked here.

ChromaStore::add

source

async fn ChromaStore::add(self : ChromaStore, documents : Array[@moonbitstack/moonrag.Document
Document]) -> Array[String]

ChromaStore::clear

source

async fn ChromaStore::clear(self : ChromaStore) -> Unit

Remove every stored document, leaving the collection.

ChromaStore::create

source

async fn ChromaStore::create(self : ChromaStore) -> Unit

Create the collection (or reuse one of the same name) and remember the id Chroma assigns it.

ChromaStore::delete

source

async fn ChromaStore::delete(self : ChromaStore, ids : ArrayView[String]) -> Unit

ChromaStore::len

source

async fn ChromaStore::len(self : ChromaStore) -> Int64

The number of stored documents.

ChromaStore::new

source

fn ChromaStore::new(base : String, embedder : &@moonbitstack/moonrag.Embedder
Embedder, dimension~ : Int, collection? : String, tenant? : String, database? : String) -> ChromaStore raise

A store over the Chroma server at base (for example http://127.0.0.1:8000), in the default tenant and database unless named.

ChromaStore::search

source

async fn ChromaStore::search(self : ChromaStore, vector : ArrayView[Double], limit~ : Int, filter? : @moonbitstack/moonrag.Filter
Filter) -> Array[@moonbitstack/moonrag.Scored
Scored]