Package dev.langchain4j.rag.query.router

Enum Class LanguageModelQueryRouter.FallbackStrategy

java.lang.Object

java.lang.Enum<LanguageModelQueryRouter.FallbackStrategy>

dev.langchain4j.rag.query.router.LanguageModelQueryRouter.FallbackStrategy

All Implemented Interfaces:

Serializable, Comparable<LanguageModelQueryRouter.FallbackStrategy>, Constable

Enclosing class:

LanguageModelQueryRouter

public static enum LanguageModelQueryRouter.FallbackStrategy
extends Enum<LanguageModelQueryRouter.FallbackStrategy>

Strategy applied if the call to the LLM fails of if LLM does not return a valid response. It could be because it was formatted improperly, or it is unclear where to route.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
DO_NOT_ROUTE	In this case, the Query will not be routed to any ContentRetriever, thus skipping the RAG flow.
FAIL	In this case, an original exception will be re-thrown, and the RAG flow will fail.
ROUTE_TO_ALL	In this case, the Query will be routed to all ContentRetrievers.

Method Summary

Modifier and Type	Method	Description
static LanguageModelQueryRouter.FallbackStrategy	valueOf(String name)	Returns the enum constant of this class with the specified name.
static LanguageModelQueryRouter.FallbackStrategy[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

DO_NOT_ROUTE

public static final LanguageModelQueryRouter.FallbackStrategy DO_NOT_ROUTE

In this case, the Query will not be routed to any ContentRetriever, thus skipping the RAG flow. No content will be appended to the original UserMessage.

ROUTE_TO_ALL

public static final LanguageModelQueryRouter.FallbackStrategy ROUTE_TO_ALL

In this case, the Query will be routed to all ContentRetrievers.

FAIL

public static final LanguageModelQueryRouter.FallbackStrategy FAIL

In this case, an original exception will be re-thrown, and the RAG flow will fail.

Method Details

values

public static LanguageModelQueryRouter.FallbackStrategy[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static LanguageModelQueryRouter.FallbackStrategy valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null