add subquery engine

packages/components/nodes/tools/QueryEngineTool/QueryEngineTool.ts

@@ -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 }

packages/components/nodes/tools/QueryEngineTool/queryEngineTool.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-brand-google-big-query" 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 d="M17.73 19.875a2.225 2.225 0 0 1 -1.948 1.125h-7.283a2.222 2.222 0 0 1 -1.947 -1.158l-4.272 -6.75a2.269 2.269 0 0 1 0 -2.184l4.272 -6.75a2.225 2.225 0 0 1 1.946 -1.158h7.285c.809 0 1.554 .443 1.947 1.158l3.98 6.75a2.33 2.33 0 0 1 0 2.25l-3.98 6.75v-.033z" /><path d="M11.5 11.5m-3.5 0a3.5 3.5 0 1 0 7 0a3.5 3.5 0 1 0 -7 0" /><path d="M14 14l2 2" /></svg>