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Class: RetrieverQueryEngine

A query engine that uses a retriever to query an index and then synthesizes the response.

Extends​

Implements​

Constructors​

new RetrieverQueryEngine()​

new RetrieverQueryEngine(retriever, responseSynthesizer?, preFilters?, nodePostprocessors?): RetrieverQueryEngine

Parameters​

• retriever: BaseRetriever

• responseSynthesizer?: BaseSynthesizer

• preFilters?: unknown

• nodePostprocessors?: BaseNodePostprocessor[]

Returns​

RetrieverQueryEngine

Overrides​

PromptMixin . constructor

Source​

packages/core/src/engines/query/RetrieverQueryEngine.ts:24

Properties​

nodePostprocessors​

nodePostprocessors: BaseNodePostprocessor[]

Source​

packages/core/src/engines/query/RetrieverQueryEngine.ts:21

preFilters?​

optional preFilters: unknown

Source​

packages/core/src/engines/query/RetrieverQueryEngine.ts:22

responseSynthesizer​

responseSynthesizer: BaseSynthesizer

Source​

packages/core/src/engines/query/RetrieverQueryEngine.ts:20

retriever​

retriever: BaseRetriever

Source​

packages/core/src/engines/query/RetrieverQueryEngine.ts:19

Methods​

_getPromptModules()​

_getPromptModules(): object

Returns​

object

responseSynthesizer​

responseSynthesizer: BaseSynthesizer

Overrides​

PromptMixin . _getPromptModules

Source​

packages/core/src/engines/query/RetrieverQueryEngine.ts:42

_getPrompts()​

protected _getPrompts(): PromptsDict

Returns​

PromptsDict

Inherited from​

PromptMixin . _getPrompts

Source​

packages/core/src/prompts/Mixin.ts:78

_updatePrompts()​

protected _updatePrompts(promptsDict): void

Parameters​

• promptsDict: PromptsDict

Returns​

void

Inherited from​

PromptMixin . _updatePrompts

Source​

packages/core/src/prompts/Mixin.ts:86

applyNodePostprocessors()​

private applyNodePostprocessors(nodes, query): Promise <NodeWithScore <Metadata>[]>

Parameters​

• nodes: NodeWithScore <Metadata>[]

• query: string

Returns​

Promise <NodeWithScore <Metadata>[]>

Source​

packages/core/src/engines/query/RetrieverQueryEngine.ts:48

getPrompts()​

getPrompts(): PromptsDict

Returns all prompts from the mixin and its modules

Returns​

PromptsDict

Inherited from​

PromptMixin . getPrompts

Source​

packages/core/src/prompts/Mixin.ts:27

query()​

query(params)​

query(params): Promise<AsyncIterable <Response>>

Query the query engine and get a response.

Parameters​

• params: QueryEngineParamsStreaming

Returns​

Promise<AsyncIterable <Response>>

Implementation of​

QueryEngine . query

Source​

packages/core/src/engines/query/RetrieverQueryEngine.ts:70

query(params)​

query(params): Promise <Response>

Parameters​

• params: QueryEngineParamsNonStreaming

Returns​

Promise <Response>

Implementation of​

QueryEngine . query

Source​

packages/core/src/engines/query/RetrieverQueryEngine.ts:71

retrieve()​

private retrieve(query): Promise <NodeWithScore <Metadata>[]>

Parameters​

• query: string

Returns​

Promise <NodeWithScore <Metadata>[]>

Source​

packages/core/src/engines/query/RetrieverQueryEngine.ts:61

updatePrompts()​

updatePrompts(promptsDict): void

Updates the prompts in the mixin and its modules

Parameters​

• promptsDict: PromptsDict

Returns​

void

Inherited from​

PromptMixin . updatePrompts

Source​

packages/core/src/prompts/Mixin.ts:48

validatePrompts()​

validatePrompts(promptsDict, moduleDict): void

Validates the prompt keys and module keys

Parameters​

• promptsDict: PromptsDict

• moduleDict: ModuleDict

Returns​

void

Inherited from​

PromptMixin . validatePrompts

Source​

packages/core/src/prompts/Mixin.ts:10