Class: VectorStoreIndex
The VectorStoreIndex, an index that stores the nodes only according to their vector embedings.
Hierarchy
Constructors
constructor
• Private new VectorStoreIndex(init)
Parameters
| Name | Type |
|---|---|
init | VectorIndexConstructorProps |
Overrides
Defined in
indices/vectorStore/VectorStoreIndex.ts:36
Properties
docStore
• docStore: BaseDocumentStore
Inherited from
Defined in
indices/BaseIndex.ts:117
indexStore
• Optional indexStore: BaseIndexStore
Inherited from
Defined in
indices/BaseIndex.ts:119
indexStruct
• indexStruct: IndexDict
Inherited from
Defined in
indices/BaseIndex.ts:120
serviceContext
• serviceContext: ServiceContext
Inherited from
Defined in
indices/BaseIndex.ts:115
storageContext
• storageContext: StorageContext
Inherited from
Defined in
indices/BaseIndex.ts:116
vectorStore
• vectorStore: VectorStore
Overrides
Defined in
indices/vectorStore/VectorStoreIndex.ts:34
Methods
asQueryEngine
▸ asQueryEngine(options?): BaseQueryEngine
Create a new query engine from the index. It will also create a retriever and response synthezier if they are not provided.
Parameters
| Name | Type | Description |
|---|---|---|
options? | Object | you can supply your own custom Retriever and ResponseSynthesizer |
options.responseSynthesizer? | ResponseSynthesizer | - |
options.retriever? | BaseRetriever | - |
Returns
Overrides
Defined in
indices/vectorStore/VectorStoreIndex.ts:215
asRetriever
▸ asRetriever(options?): VectorIndexRetriever
Create a new retriever from the index.
Parameters
| Name | Type |
|---|---|
options? | any |
Returns
Overrides
Defined in
indices/vectorStore/VectorStoreIndex.ts:211
buildIndexFromNodes
▸ Static buildIndexFromNodes(nodes, serviceContext, vectorStore, docStore): Promise<IndexDict>
Get embeddings for nodes and place them into the index.
Parameters
| Name | Type |
|---|---|
nodes | BaseNode[] |
serviceContext | ServiceContext |
vectorStore | VectorStore |
docStore | BaseDocumentStore |
Returns
Promise<IndexDict>
Defined in
indices/vectorStore/VectorStoreIndex.ts:151
fromDocuments
▸ Static fromDocuments(documents, args?): Promise<VectorStoreIndex>
High level API: split documents, get embeddings, and build index.
Parameters
| Name | Type |
|---|---|
documents | Document[] |
args | Object |
args.serviceContext? | ServiceContext |
args.storageContext? | StorageContext |
Returns
Promise<VectorStoreIndex>
Defined in
indices/vectorStore/VectorStoreIndex.ts:186
getNodeEmbeddingResults
▸ Static getNodeEmbeddingResults(nodes, serviceContext, logProgress?): Promise<NodeWithEmbedding[]>
Get the embeddings for nodes.
Parameters
| Name | Type | Default value | Description |
|---|---|---|---|
nodes | BaseNode[] | undefined | |
serviceContext | ServiceContext | undefined | |
logProgress | boolean | false | log progress to console (useful for debugging) |
Returns
Promise<NodeWithEmbedding[]>
Defined in
indices/vectorStore/VectorStoreIndex.ts:123
init
▸ Static init(options): Promise<VectorStoreIndex>
The async init function should be called after the constructor. This is needed to handle persistence.
Parameters
| Name | Type |
|---|---|
options | VectorIndexOptions |
Returns
Promise<VectorStoreIndex>
Defined in
indices/vectorStore/VectorStoreIndex.ts:47