GraphExecutor

Runs a widget-free graph model by following execution-flow wires and evaluating data inputs on demand.

Overview

Register a NodeBehavior for each executable node type, then call fire(model, startNodeId) on an event node. Pure behaviors compute outputs when requested; exec behaviors run along flow wires and may continue through one or more outputs. Validate first when the graph can be edited by users. A configurable step limit stops runaway flow loops.

Register behaviors and run a graph

GraphExecutor executor = new GraphExecutor()
        .register("event.start", NodeBehavior.exec(context -> context.continueWith("next")))
        .register("value.add", NodeBehavior.pure(context ->
                context.output("sum", context.number("left") + context.number("right"))));
GraphResult result = executor.fire(graph.model(), "start");