add multi retrieval qa chain

2026-06-28 19:00:59 +03:00 · 2023-05-25 13:50:11 +01:00
parent 2802ee0142
commit 769b4ea567
7 changed files with 1023 additions and 1 deletions
@@ -0,0 +1,61 @@
+import { VectorStore } from 'langchain/vectorstores/base'
+import { INode, INodeData, INodeParams, VectorStoreRetriever, VectorStoreRetrieverInput } from '../../../src/Interface'
+
+class VectorStoreRetriever_Retrievers implements INode {
+    label: string
+    name: string
+    description: string
+    type: string
+    icon: string
+    category: string
+    baseClasses: string[]
+    inputs: INodeParams[]
+
+    constructor() {
+        this.label = 'Vector Store Retriever'
+        this.name = 'vectorStoreRetriever'
+        this.type = 'VectorStoreRetriever'
+        this.icon = 'vectorretriever.svg'
+        this.category = 'Retrievers'
+        this.description = 'Store vector store as retriever to be later queried by MultiRetrievalQAChain'
+        this.baseClasses = [this.type]
+        this.inputs = [
+            {
+                label: 'Vector Store',
+                name: 'vectorStore',
+                type: 'VectorStore'
+            },
+            {
+                label: 'Retriever Name',
+                name: 'name',
+                type: 'string',
+                placeholder: 'netflix movies'
+            },
+            {
+                label: 'Retriever Description',
+                name: 'description',
+                type: 'string',
+                rows: 3,
+                description: 'Description of when to use the vector store retriever',
+                placeholder: 'Good for answering questions about netflix movies'
+            }
+        ]
+    }
+
+    async init(nodeData: INodeData): Promise<any> {
+        const name = nodeData.inputs?.name as string
+        const description = nodeData.inputs?.description as string
+        const vectorStore = nodeData.inputs?.vectorStore as VectorStore
+
+        const obj = {
+            name,
+            description,
+            vectorStore
+        } as VectorStoreRetrieverInput
+
+        const retriever = new VectorStoreRetriever(obj)
+        return retriever
+    }
+}
+
+module.exports = { nodeClass: VectorStoreRetriever_Retrievers }
@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-database-export" width="24" height="24" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round">
+   <path stroke="none" d="M0 0h24v24H0z" fill="none"></path>
+   <path d="M4 6c0 1.657 3.582 3 8 3s8 -1.343 8 -3s-3.582 -3 -8 -3s-8 1.343 -8 3"></path>
+   <path d="M4 6v6c0 1.657 3.582 3 8 3c1.118 0 2.183 -.086 3.15 -.241"></path>
+   <path d="M20 12v-6"></path>
+   <path d="M4 12v6c0 1.657 3.582 3 8 3c.157 0 .312 -.002 .466 -.005"></path>
+   <path d="M16 19h6"></path>
+   <path d="M19 16l3 3l-3 3"></path>
+</svg>