Package org.bsc.langgraph4j.agui.sdk

Class AGUINodeOutput<State extends AgentState>

java.lang.Object

org.bsc.langgraph4j.NodeOutput<State>

org.bsc.langgraph4j.agui.sdk.AGUINodeOutput<State>

Type Parameters:

State - the type of the agent state carried by this output

All Implemented Interfaces:

HasMetadata

public class AGUINodeOutput<State extends AgentState>
extends NodeOutput<State>

Custom LangGraph4j NodeOutput implementation that acts as a bridge between the LangGraph4j output streaming and the AG-UI event model.

Besides the standard node/state information carried by NodeOutput, an AGUINodeOutput also carries a list of AG-UI Events that a node execution wants to emit (e.g. text message events, step lifecycle events). Consumers of the graph's streaming output (see AGUIAgentBase.onNextEvents(com.agui.community.core.agent.RunAgentInput, NodeOutput)) can recognize instances of this class and forward its events() directly to the AG-UI subscriber.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	AGUINodeOutput.Builder	Builder for AGUINodeOutput instances, used to accumulate the AG-UI Events to be carried by the resulting output before binding them to a node id and state via AGUINodeOutput.Builder.build(String, AgentState).

Field Summary

Fields inherited from class org.bsc.langgraph4j.NodeOutput

metadataSupplier

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AGUINodeOutput(String node, State state, List<com.agui.community.core.event.Event> events)	Creates a new node output carrying the given AG-UI events.

Method Summary

Modifier and Type	Method	Description
static <State extends AgentState> AGUINodeOutput.Builder	builder()	Creates a new AGUINodeOutput.Builder to accumulate AG-UI events before building an AGUINodeOutput.
List<com.agui.community.core.event.Event>	events()	Returns the AG-UI events carried by this node output.

Methods inherited from class org.bsc.langgraph4j.NodeOutput

isEND, isSTART, metadata, metadataKeys, node, of, state, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.bsc.langgraph4j.HasMetadata

metadata

Constructor Details

AGUINodeOutput

protected AGUINodeOutput(String node,
 State state,
 List<com.agui.community.core.event.Event> events)

Creates a new node output carrying the given AG-UI events.

Parameters:

node - the identifier of the node that produced this output

state - the agent state associated with this output

events - the AG-UI events to carry; must not be null

Method Details

builder

public static <State extends AgentState>
AGUINodeOutput.Builder builder()

Creates a new AGUINodeOutput.Builder to accumulate AG-UI events before building an AGUINodeOutput.

Type Parameters:

State - the type of the agent state

Returns:

a new builder instance

events

public List<com.agui.community.core.event.Event> events()

Returns the AG-UI events carried by this node output.

Returns:

the list of AG-UI events