Struct LogicalExtend 

pub struct LogicalExtend {
    pub rel_table_name: String,
    pub rel_table_id: u64,
    pub rel_var: String,
    pub bound_node_var: String,
    pub direction: EdgeDirection,
    pub dst_node_var: String,
    pub dst_table_name: String,
    pub dst_table_id: u64,
    pub cardinality: u64,
}

Logical operator for extending from a source node through a relationship.

Replaces the combination of ScanRel + ScanNode(dest) in the pipeline. For each source node, looks up adjacency list entries in the rel table, producing output rows that include source fields, rel properties, and destination node properties.

Ported from C++ LogicalExtend.

Fields

rel_table_name: String

Name of the relationship table to extend through.

rel_table_id: u64

ID of the relationship table.

rel_var: String

Variable name of the relationship (e.g., “r” in -[r:RELATES_TO]->). Used as the field-name prefix for relationship properties.

bound_node_var: String

Variable name of the bound (source) node.

direction: EdgeDirection

Direction of the extend (forward, backward, or both).

dst_node_var: String

Variable name of the destination node (e.g., “p”).

dst_table_name: String

Table name of the destination node (e.g., “Post”).

dst_table_id: u64

Table ID of the destination node.

cardinality: u64

Estimated cardinality.

Trait Implementations

impl Clone for LogicalExtend

fn clone(&self) -> LogicalExtend

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LogicalExtend

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

Formats the value using the given formatter.