Struct VariableLengthExpandOperator 

pub struct VariableLengthExpandOperator { /* private fields */ }

An expand operator that handles variable-length path patterns like *1..3.

For each input row containing a source node, this operator produces output rows for each neighbor reachable within the hop range.

Implementations

impl VariableLengthExpandOperator

pub fn new( store: Arc<dyn GraphStore>, input: Box<dyn Operator>, source_column: usize, direction: Direction, edge_types: Vec<String>, min_hops: u32, max_hops: u32, ) -> Self

Creates a new variable-length expand operator.

pub fn with_path_mode(self, mode: PathMode) -> Self

Sets the path traversal mode.

pub fn with_path_length_output(self) -> Self

Enables path length output as an additional column.

pub fn with_path_detail_output(self) -> Self

Enables full path detail output (node list and edge list columns).

pub fn with_chunk_capacity(self, capacity: usize) -> Self

Sets the chunk capacity.

pub fn with_transaction_context( self, epoch: EpochId, transaction_id: Option<TransactionId>, ) -> Self

Sets the transaction context for MVCC visibility.

Trait Implementations

impl Operator for VariableLengthExpandOperator

fn next(&mut self) -> OperatorResult

Pulls the next batch of data. Returns None when exhausted.

fn reset(&mut self)

Resets to initial state so you can iterate again.

fn name(&self) -> &'static str

Returns a name for debugging/explain output.