Class UnsupportedFeatureException

java.lang.Object

java.lang.Throwable

java.lang.Exception

java.lang.RuntimeException

dev.langchain4j.exception.LangChain4jException

dev.langchain4j.exception.NonRetriableException

dev.langchain4j.exception.UnsupportedFeatureException

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

AsyncNotSupportedException

public class UnsupportedFeatureException
extends NonRetriableException

Thrown when a requested feature is not supported by the current model provider or the specific model being used.

Examples include requesting structured output from a model that does not support it, or enabling tool-use on a provider whose API does not offer function calling. The caller should either switch to a compatible model or adjust the request to avoid the unsupported feature.

It is a NonRetriableException: a provider that does not support a feature will not begin to support it on a retry, so retrying (with back-off) would only add latency before failing.

See Also:

• AsyncNotSupportedException
• Serialized Form

Constructor Summary

Constructors

Constructor	Description
UnsupportedFeatureException(String message)

Method Summary

Methods inherited from class Throwable

addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

UnsupportedFeatureException

public UnsupportedFeatureException(String message)