Class: VectorIndexRetriever

VectorIndexRetriever retrieves nodes from a VectorIndex.

Implements

• BaseRetriever

Constructors

constructor

• new VectorIndexRetriever(«destructured»): VectorIndexRetriever

Parameters

Name	Type
«destructured»	Object
› imageSimilarityTopK?	number
› index	VectorStoreIndex
› similarityTopK?	number

Returns

VectorIndexRetriever

Defined in

packages/core/src/indices/vectorStore/VectorIndexRetriever.ts:26

Properties

imageSimilarityTopK

• imageSimilarityTopK: number

Defined in

packages/core/src/indices/vectorStore/VectorIndexRetriever.ts:23

---

index

• index: VectorStoreIndex

Defined in

packages/core/src/indices/vectorStore/VectorIndexRetriever.ts:21

---

serviceContext

• Private serviceContext: ServiceContext

Defined in

packages/core/src/indices/vectorStore/VectorIndexRetriever.ts:24

---

similarityTopK

• similarityTopK: number

Defined in

packages/core/src/indices/vectorStore/VectorIndexRetriever.ts:22

Methods

buildNodeListFromQueryResult

▸ buildNodeListFromQueryResult(result): NodeWithScore<Metadata>[]

Parameters

Name	Type
result	VectorStoreQueryResult

Returns

NodeWithScore<Metadata>[]

Defined in

packages/core/src/indices/vectorStore/VectorIndexRetriever.ts:120

---

buildVectorStoreQuery

▸ buildVectorStoreQuery(embedModel, query, similarityTopK, preFilters?): Promise<VectorStoreQuery>

Parameters

Name	Type
embedModel	BaseEmbedding
query	string
similarityTopK	number
preFilters?	MetadataFilters

Returns

Promise<VectorStoreQuery>

Defined in

packages/core/src/indices/vectorStore/VectorIndexRetriever.ts:104

---

getServiceContext

▸ getServiceContext(): ServiceContext

Returns

ServiceContext

Implementation of

BaseRetriever.getServiceContext

Defined in

packages/core/src/indices/vectorStore/VectorIndexRetriever.ts:144

---

retrieve

▸ retrieve(query, parentEvent?, preFilters?): Promise<NodeWithScore<Metadata>[]>

Parameters

Name	Type
query	string
parentEvent?	Event
preFilters?	MetadataFilters

Returns

Promise<NodeWithScore<Metadata>[]>

Implementation of

BaseRetriever.retrieve

Defined in

packages/core/src/indices/vectorStore/VectorIndexRetriever.ts:41

---

sendEvent

▸ sendEvent(query, nodesWithScores, parentEvent): void

Parameters

Name	Type
query	string
nodesWithScores	NodeWithScore<Metadata>[]
parentEvent	undefined | Event

Returns

void

Defined in

packages/core/src/indices/vectorStore/VectorIndexRetriever.ts:87

---

textRetrieve

▸ textRetrieve(query, preFilters?): Promise<NodeWithScore<Metadata>[]>

Parameters

Name	Type
query	string
preFilters?	MetadataFilters

Returns

Promise<NodeWithScore<Metadata>[]>

Defined in

packages/core/src/indices/vectorStore/VectorIndexRetriever.ts:54

---

textToImageRetrieve

▸ textToImageRetrieve(query, preFilters?): Promise<NodeWithScore<Metadata>[]>

Parameters

Name	Type
query	string
preFilters?	MetadataFilters

Returns

Promise<NodeWithScore<Metadata>[]>

Defined in

packages/core/src/indices/vectorStore/VectorIndexRetriever.ts:69