Package com.google.adk.workflow

Class EdgesBuilder

java.lang.Object

com.google.adk.workflow.EdgesBuilder

@Experimental
public final class EdgesBuilder
extends Object

A builder for the edges of a workflow graph, declared as chains of calls that start at from(com.google.adk.workflow.Node) or fromStart(). Create one with new EdgesBuilder() and call build(), or let Workflow.Builder.edges(Consumer) do both. A node is identified by its instance, so create each node once.

 Workflow support =
     Workflow.builder()
         .name("support_triage")
         .edges(
             g -> {
               g.fromStart()
                   .chain(classify, category)
                   .route(
                       r -> {
                         r.on("billing").then(billing);
                         r.otherwise(summarize);
                       });
               g.from(billing).then(summarize);
             })
         .build();
 

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	EdgesBuilder.EdgeChain	A chain of edges positioned at a node, started by from(Node), fromStart() or EdgesBuilder.NodeGroupChain.joinTo(com.google.adk.workflow.JoinNode).
static final class	EdgesBuilder.NodeGroupChain	A chain of edges positioned at a node group from a fan-out, from(Node, Node, Node...), or from(Collection), which EdgesBuilder.NodeGroupChain.joinTo(com.google.adk.workflow.JoinNode) connects to a JoinNode.
static final class	EdgesBuilder.RouteMap	A routing map configured in EdgesBuilder.EdgeChain.route(java.util.function.Consumer<? super com.google.adk.workflow.EdgesBuilder.RouteMap>) that maps each route the source node may emit to the nodes it leads to, written r.on("billing").then(billing).
static final class	EdgesBuilder.RouteMapEntry	A routing-map entry started by EdgesBuilder.RouteMap.on(java.lang.String) whose routes have no target yet; EdgesBuilder.RouteMapEntry.then(com.google.adk.workflow.Node, com.google.adk.workflow.Node...) completes it.
static final class	EdgesBuilder.RouteSet	A set of routes that select a single edge, which fires once when its source emits any of them; separate edges to the same target would fire once each.

Constructor Summary

Constructors

Constructor	Description
EdgesBuilder()

Method Summary

Modifier and Type	Method	Description
com.google.common.collect.ImmutableList<Edge>	build()	Returns the edges added so far, in the order they were added.
EdgesBuilder.EdgeChain	from(Node node)	Starts a chain of edges at node: g.from(a).then(b).then(c).
EdgesBuilder.NodeGroupChain	from(Node first, Node second, Node... rest)	Starts a chain at first, second and each node in rest so they can join without a fan-out: g.from(a, b).joinTo(join).
EdgesBuilder.NodeGroupChain	from(Collection<? extends Node> nodes)	Starts a chain at nodes (such as a computed list) so they can join without a fan-out, like from(Node, Node, Node...).
EdgesBuilder.EdgeChain	fromStart()	Starts a chain of edges at Start: g.fromStart().then(a).

Methods inherited from class java.lang.Object

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

Constructor Details

EdgesBuilder

public EdgesBuilder()

Method Details

from

public EdgesBuilder.EdgeChain from(Node node)

Starts a chain of edges at node: g.from(a).then(b).then(c).

from

public EdgesBuilder.NodeGroupChain from(Collection<? extends Node> nodes)

Starts a chain at nodes (such as a computed list) so they can join without a fan-out, like from(Node, Node, Node...).

from

public EdgesBuilder.NodeGroupChain from(Node first,
 Node second,
 Node... rest)

Starts a chain at first, second and each node in rest so they can join without a fan-out: g.from(a, b).joinTo(join).

fromStart

public EdgesBuilder.EdgeChain fromStart()

Starts a chain of edges at Start: g.fromStart().then(a).

build

public com.google.common.collect.ImmutableList<Edge> build()

Returns the edges added so far, in the order they were added.