Class: MongoDBAtlasVectorSearch

Vector store that uses MongoDB Atlas for storage and vector search. This store uses the $vectorSearch aggregation stage to perform vector similarity search.

Extends

• BaseVectorStore

Constructors

new MongoDBAtlasVectorSearch()

new MongoDBAtlasVectorSearch(init): MongoDBAtlasVectorSearch

Parameters

• init: Partial<MongoDBAtlasVectorSearch> & object & VectorStoreBaseParams

Returns

MongoDBAtlasVectorSearch

Overrides

BaseVectorStore.constructor

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:139

Properties

autoCreateIndex

autoCreateIndex: boolean

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:76

---

collectionName

collectionName: string

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:75

---

dbName

dbName: string

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:74

---

embeddingDefinition

embeddingDefinition: Record<string, unknown>

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:77

---

embeddingKey

embeddingKey: string

Name of the key containing the embedding vector.

Default: "embedding"

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:97

---

embedModel

embedModel: BaseEmbedding

Inherited from

BaseVectorStore.embedModel

Defined in

packages/llamaindex/src/vector-store/types.ts:89

---

flatMetadata

flatMetadata: boolean = true

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:72

---

idKey

idKey: string

Name of the key containing the node id.

Default: "id"

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:104

---

indexedMetadataFields

indexedMetadataFields: string[]

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:78

---

indexName

indexName: string

Name of the vector index. If invalid, Mongo will silently ignore this issue and return 0 results.

Default: "default"

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:90

---

insertOptions?

optional insertOptions: BulkWriteOptions

Options to pass to the insertMany function when adding nodes.

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:123

---

isEmbeddingQuery?

optional isEmbeddingQuery: boolean

Inherited from

BaseVectorStore.isEmbeddingQuery

Defined in

packages/llamaindex/src/vector-store/types.ts:91

---

metadataKey

metadataKey: string

Name of the key containing the node metadata.

Default: "metadata"

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:118

---

mongodbClient

mongodbClient: MongoClient

The used MongoClient. If not given, a new MongoClient is created based on the MONGODB_URI env variable.

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:83

---

numCandidates()

numCandidates: (query) => number

Function to determine the number of candidates to retrieve for a given query. In case your results are not good, you might tune this value.

Run Vector Search Queries

Efficient and robust approximate nearest neighbor search using Hierarchical Navigable Small World graphs

Default: query.similarityTopK * 10

Parameters

• query: VectorStoreQuery

Returns

number

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:136

---

storesText

storesText: boolean = true

Overrides

BaseVectorStore.storesText

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:71

---

textKey

textKey: string

Name of the key containing the node text.

Default: "text"

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:111

Methods

add()

add(nodes): Promise<string[]>

Add nodes to the vector store.

Parameters

• nodes: BaseNode<Metadata>[]

Nodes to add to the vector store

Returns

Promise<string[]>

List of node ids that were added

Overrides

BaseVectorStore.add

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:223

---

client()

client(): MongoClient

Returns

MongoClient

Overrides

BaseVectorStore.client

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:274

---

delete()

delete(refDocId, deleteOptions?): Promise<void>

Delete nodes from the vector store with the given redDocId.

Parameters

• refDocId: string

The refDocId of the nodes to delete

• deleteOptions?: object

Options to pass to the deleteOne function

Returns

Promise<void>

Overrides

BaseVectorStore.delete

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:264

---

ensureCollection()

ensureCollection(): Promise<Collection<Document>>

Returns

Promise<Collection<Document>>

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:180

---

query()

query(query, options?): Promise<VectorStoreQueryResult>

Perform a vector similarity search query.

Parameters

• query: VectorStoreQuery

The query to run

• options?: object

Returns

Promise<VectorStoreQueryResult>

List of nodes and their similarities

Overrides

BaseVectorStore.query

Defined in

packages/llamaindex/src/vector-store/MongoDBAtlasVectorStore.ts:284