Uses of Annotation Interface
dev.langchain4j.Experimental

Packages that use Experimental

Package	Description
dev.langchain4j.data.message
dev.langchain4j.experimental.rag.content.retriever.sql
dev.langchain4j.model.chat.response
dev.langchain4j.model.openaiofficial
dev.langchain4j.service
dev.langchain4j.service.tool
dev.langchain4j.store.embedding.filter.builder.sql
dev.langchain4j.store.embedding.filter.parser.sql

Packages with annotations of type Experimental

Package	Description
dev.langchain4j.guardrail
dev.langchain4j.service.guardrail

Uses of Experimental in dev.langchain4j.data.message

Methods in dev.langchain4j.data.message with annotations of type Experimental

Modifier and Type	Method	Description
<T> T	AiMessage.attribute(String key, Class<T> type)	Returns additional attribute by it's key.
Map<String,Object>	AiMessage.attributes()	Returns additional attributes, typically provider-specific.
AiMessage.Builder	AiMessage.Builder.attributes(Map<String,Object> attributes)
AiMessage.Builder	AiMessage.Builder.thinking(String thinking)
String	AiMessage.thinking()	Get the thinking/reasoning text of the message.

Uses of Experimental in dev.langchain4j.experimental.rag.content.retriever.sql

Classes in dev.langchain4j.experimental.rag.content.retriever.sql with annotations of type Experimental

Modifier and Type	Class	Description
class	SqlDatabaseContentRetriever	WARNING! Although fun and exciting, this class is dangerous to use! Do not ever use this in production! The database user must have very limited READ-ONLY permissions! Although the generated SQL is somewhat validated (to ensure that the SQL is a SELECT statement) using JSqlParser, this class does not guarantee that the SQL will be harmless.

Constructors in dev.langchain4j.experimental.rag.content.retriever.sql with annotations of type Experimental

Modifier	Constructor	Description
	SqlDatabaseContentRetriever(DataSource dataSource, String sqlDialect, String databaseStructure, PromptTemplate promptTemplate, ChatModel chatModel, Integer maxRetries)	Creates an instance of a SqlDatabaseContentRetriever.

Uses of Experimental in dev.langchain4j.model.chat.response

Classes in dev.langchain4j.model.chat.response with annotations of type Experimental

Modifier and Type	Class	Description
class	CompleteToolCall	Represents a complete tool call.
class	PartialThinking
class	PartialToolCall	Represents a partial tool call.

Methods in dev.langchain4j.model.chat.response with annotations of type Experimental

Modifier and Type	Method	Description
default void	StreamingChatResponseHandler.onCompleteToolCall(CompleteToolCall completeToolCall)	Invoked when the model has finished streaming a single tool call.
default void	StreamingChatResponseHandler.onPartialThinking(PartialThinking partialThinking)	Invoked each time the model generates a partial thinking/reasoning text, usually a single token.
default void	StreamingChatResponseHandler.onPartialToolCall(PartialToolCall partialToolCall)	This callback is invoked each time the model generates a partial tool call, which contains a single token of the tool's arguments.

Uses of Experimental in dev.langchain4j.model.openaiofficial

Classes in dev.langchain4j.model.openaiofficial with annotations of type Experimental

Modifier and Type	Class	Description
class	OpenAiOfficialChatRequestParameters
class	OpenAiOfficialChatResponseMetadata

Uses of Experimental in dev.langchain4j.service

Methods in dev.langchain4j.service with annotations of type Experimental

Modifier and Type	Method	Description
default TokenStream	TokenStream.onPartialThinking(Consumer<PartialThinking> partialThinkingHandler)	The provided consumer will be invoked every time a new partial thinking/reasoning text (usually a single token) from a language model is available.

Uses of Experimental in dev.langchain4j.service.tool

Classes in dev.langchain4j.service.tool with annotations of type Experimental

Modifier and Type	Class	Description
class	BeforeToolExecution

Uses of Experimental in dev.langchain4j.store.embedding.filter.builder.sql

Classes in dev.langchain4j.store.embedding.filter.builder.sql with annotations of type Experimental

Modifier and Type	Class	Description
class	ColumnDefinition
class	LanguageModelSqlFilterBuilder	Given a natural language Query, this class creates a suitable Filter using a language model.
class	TableDefinition

Uses of Experimental in dev.langchain4j.store.embedding.filter.parser.sql

Classes in dev.langchain4j.store.embedding.filter.parser.sql with annotations of type Experimental

Modifier and Type	Class	Description
class	SqlFilterParser	Parses an SQL "WHERE" clause into a Filter object using JSqlParser.