@n8n/n8n-nodes-langchain
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text/typescript
/**
* Simple Vector Store Node - Version 1
* Discriminator: mode=load
*/
/** Get many ranked documents from vector store for query */
export type LcVectorStoreInMemoryV1LoadParams = {
/**
* One-shot similarity search on the main flow using the `prompt` parameter. Declare with `vectorStore({...})`. Required subnodes: `embedding`. For LLM-driven querying (RAG), use `mode: 'retrieve-as-tool'` instead.
* <patterns>
* <pattern title="load mode — one-shot similarity search (generic)">
* // Substitute the type literal and provider-specific parameters — see the rest of this file.
* const lookup = vectorStore({
* type: '@n8n/n8n-nodes-langchain.vectorStoreXxx',
* config: {
* name: 'Knowledge Base',
* parameters: {
* mode: 'load',
* prompt: expr('{{ $json.query }}'),
* // ...provider-specific parameters
* },
* subnodes: { embedding: embeddingsOpenAi }
* }
* });
* </pattern>
* </patterns>
*/
mode: 'load';
/**
* The key to use to store the vector memory in the workflow data. The key will be prefixed with the workflow ID to avoid collisions.
* @default vector_store_key
*/
memoryKey?: string | Expression<string>;
/**
* Search prompt to retrieve matching documents from the vector store using similarity-based ranking
*/
prompt: string | Expression<string>;
/**
* Number of top results to fetch from vector store
* @default 4
*/
topK?: number | Expression<number>;
/**
* Whether or not to include document metadata
* @default true
*/
includeDocumentMetadata?: boolean | Expression<boolean>;
/**
* Whether or not to rerank results
* @default false
*/
useReranker?: boolean | Expression<boolean>;
};
export interface LcVectorStoreInMemoryV1LoadSubnodeConfig {
embedding: EmbeddingInstance | EmbeddingInstance[];
/**
* @displayOptions.show { useReranker: [true] }
*/
reranker: RerankerInstance;
}
export type LcVectorStoreInMemoryV1LoadNode = {
type: '@n8n/n8n-nodes-langchain.vectorStoreInMemory';
version: 1;
config: NodeConfig<LcVectorStoreInMemoryV1LoadParams> & { subnodes: LcVectorStoreInMemoryV1LoadSubnodeConfig };
};