add subquery engine

2026-06-25 13:01:00 +03:00 · 2024-01-28 23:46:55 +00:00
parent 3e59b9b658
commit 21c47d8049
11 changed files with 453 additions and 21 deletions
@@ -0,0 +1,68 @@
+import { INode, INodeData, INodeParams } from '../../../src/Interface'
+import { VectorStoreIndex } from 'llamaindex'
+
+class QueryEngine_Tools implements INode {
+    label: string
+    name: string
+    version: number
+    description: string
+    type: string
+    icon: string
+    category: string
+    tags: string[]
+    baseClasses: string[]
+    inputs?: INodeParams[]
+
+    constructor() {
+        this.label = 'QueryEngine Tool'
+        this.name = 'queryEngineToolLlamaIndex'
+        this.version = 1.0
+        this.type = 'QueryEngineTool'
+        this.icon = 'queryEngineTool.svg'
+        this.category = 'Tools'
+        this.tags = ['LlamaIndex']
+        this.description = 'Tool used to invoke query engine'
+        this.baseClasses = [this.type]
+        this.inputs = [
+            {
+                label: 'Vector Store Index',
+                name: 'vectorStoreIndex',
+                type: 'VectorStoreIndex'
+            },
+            {
+                label: 'Tool Name',
+                name: 'toolName',
+                type: 'string',
+                description: 'Tool name must be small capital letter with underscore. Ex: my_tool'
+            },
+            {
+                label: 'Tool Description',
+                name: 'toolDesc',
+                type: 'string',
+                rows: 4
+            }
+        ]
+    }
+
+    async init(nodeData: INodeData): Promise<any> {
+        const vectorStoreIndex = nodeData.inputs?.vectorStoreIndex as VectorStoreIndex
+        const toolName = nodeData.inputs?.toolName as string
+        const toolDesc = nodeData.inputs?.toolDesc as string
+        const queryEngineTool = {
+            queryEngine: vectorStoreIndex.asQueryEngine({
+                preFilters: {
+                    ...(vectorStoreIndex as any).metadatafilter
+                }
+            }),
+            metadata: {
+                name: toolName,
+                description: toolDesc
+            },
+            vectorStoreIndex
+        }
+
+        return queryEngineTool
+    }
+}
+
+module.exports = { nodeClass: QueryEngine_Tools }