Struct LogicalRecursiveExtend 

pub struct LogicalRecursiveExtend {

    pub source_var: String,
    pub source_table_id: u64,
    pub edge_var: Option<String>,
    pub target_var: String,
    pub rel_table_ids: Vec<u64>,
    pub rel_labels: Vec<String>,
    pub lower_bound: u64,
    pub upper_bound: u64,
    pub direction: ExtendDirection,
    pub semantic: PathSemantic,
    pub weight_property: Option<String>,
    pub cost_output_name: Option<String>,
    pub cardinality: u64,
}

Variable-length path (recursive extend) operator.

Corresponds to MATCH (a)-[e*1..3]->(b) — traverses the graph up to upper_bound hops from source nodes and produces results for each path whose length is between lower_bound and upper_bound.

Supports both unweighted BFS and weighted shortest path (Dijkstra) when weight_property is specified.

This is a leaf operator that executes BFS/Dijkstra traversal during query execution.

Fields

source_var: String

Source node variable name.

source_table_id: u64

Source node table ID.

edge_var: Option<String>

Edge variable name (optional).

target_var: String

Destination node variable name.

rel_table_ids: Vec<u64>

Relationship table ID(s) to traverse.

rel_labels: Vec<String>

Relationship label(s).

lower_bound: u64

Minimum path length.

upper_bound: u64

Maximum path length.

direction: ExtendDirection

Traversal direction.

semantic: PathSemantic

Path semantic (WALK / TRAIL / ACYCLIC).

weight_property: Option<String>

Optional edge weight property name for weighted shortest path. When Some(prop_name), traversal uses Dijkstra’s algorithm instead of BFS, and results are sorted by cumulative path cost.

cost_output_name: Option<String>

Optional name for the cost output column (e.g., “cost” or “totalWeight”). Only used when weight_property is set.

cardinality: u64

Estimated cardinality.

Trait Implementations

impl Clone for LogicalRecursiveExtend

fn clone(&self) -> LogicalRecursiveExtend

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for LogicalRecursiveExtend

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.