Struct GraphBuilder 

pub struct GraphBuilder<S: StateSchema> { /* private fields */ }

GraphBuilder - Fluent builder pattern for StateGraph

Implementations

impl<S: StateSchema + 'static> GraphBuilder<S>

pub fn new() -> Self

Create a new empty graph builder.

pub fn add_node<N: GraphNode<S> + 'static>(self, node: N) -> Self

Add a node to the graph.

pub fn add_node_fn<F>(self, name: impl Into<String>, func: F) -> Self

where F: Fn(&S) -> Result<StateUpdate<S>, GraphError> + Send + Sync + 'static,

Add a synchronous function node to the graph.

pub fn add_async_node<F>(self, name: impl Into<String>, func: F) -> Self

where F: AsyncFn<S> + 'static,

Add an async function node to the graph.

pub fn add_subgraph<SubS: StateSchema + 'static>( self, name: impl Into<String>, subgraph: CompiledGraph<SubS>, input_mapper: impl Fn(&S) -> SubS + Send + Sync + 'static, output_mapper: impl Fn(&SubS, &mut S) + Send + Sync + 'static, ) -> Self

Add a subgraph node with input/output mappers.

pub fn add_subgraph_same_state( self, name: impl Into<String>, subgraph: CompiledGraph<S>, ) -> Self

Add a subgraph node that shares the same state type.

pub fn add_edge( self, source: impl Into<String>, target: impl Into<String>, ) -> Self

Add a fixed edge between two nodes.

pub fn add_conditional_edges( self, source: impl Into<String>, router_name: impl Into<String>, targets: HashMap<String, String>, default: Option<String>, ) -> Self

Add a conditional edge routed by a named router.

pub fn add_fan_out( self, source: impl Into<String>, targets: Vec<String>, ) -> Self

Add a FanOut edge for parallel execution.

pub fn add_fan_in(self, sources: Vec<String>, target: impl Into<String>) -> Self

Add a FanIn edge joining multiple sources into one target.

pub fn set_entry_point(self, node: impl Into<String>) -> Self

Set the entry point node for the graph.

pub fn compile(self) -> GraphResult<CompiledGraph<S>>

Compile the graph into an executable CompiledGraph.

pub fn build(self) -> StateGraph<S>

Build and return the underlying StateGraph.

Trait Implementations

impl<S: StateSchema + 'static> Default for GraphBuilder<S>

fn default() -> Self

Returns the “default value” for a type.