LlamaIndexTS/apps/docs/docs/api/classes/SubQuestionQueryEngine.md

id, title, sidebar_label, sidebar_position, custom_edit_url

id	title	sidebar_label	sidebar_position	custom_edit_url
SubQuestionQueryEngine	Class: SubQuestionQueryEngine	SubQuestionQueryEngine	0	null

SubQuestionQueryEngine decomposes a question into subquestions and then

Implements

• BaseQueryEngine

Constructors

constructor

• new SubQuestionQueryEngine(init)

Parameters

Name	Type
init	Object
init.queryEngineTools	QueryEngineTool[]
init.questionGen	BaseQuestionGenerator
init.responseSynthesizer	ResponseSynthesizer

Defined in

QueryEngine.ts:65

Properties

metadatas

• metadatas: ToolMetadata[]

Defined in

QueryEngine.ts:63

---

queryEngines

• queryEngines: Record<string, BaseQueryEngine>

Defined in

QueryEngine.ts:62

---

questionGen

• questionGen: BaseQuestionGenerator

Defined in

QueryEngine.ts:61

---

responseSynthesizer

• responseSynthesizer: ResponseSynthesizer

Defined in

QueryEngine.ts:60

Methods

query

▸ query(query): Promise<Response>

Query the query engine and get a response.

Parameters

Name	Type
query	string

Returns

Promise<Response>

Implementation of

BaseQueryEngine.query

Defined in

QueryEngine.ts:106

---

querySubQ

▸ Private querySubQ(subQ, parentEvent?): Promise<null | NodeWithScore>

Parameters

Name	Type
subQ	SubQuestion
parentEvent?	Event

Returns

Promise<null | NodeWithScore>

Defined in

QueryEngine.ts:134

---

fromDefaults

▸ Static fromDefaults(init): SubQuestionQueryEngine

Parameters

Name	Type
init	Object
init.queryEngineTools	QueryEngineTool[]
init.questionGen?	BaseQuestionGenerator
init.responseSynthesizer?	ResponseSynthesizer
init.serviceContext?	ServiceContext

Returns

SubQuestionQueryEngine

Defined in

QueryEngine.ts:82