Struct PatternBuilder 

pub struct PatternBuilder { /* private fields */ }

Builder for creating path patterns with a fluent API.

Implementations

impl PatternBuilder

pub fn new() -> Self

Start building a new pattern.

pub fn out(self, edge_type: impl Into<EdgeType>) -> Self

Add an outgoing edge of the specified type.

pub fn inc(self, edge_type: impl Into<EdgeType>) -> Self

Add an incoming edge of the specified type.

pub fn rel(self, edge_type: impl Into<EdgeType>) -> Self

Add a bidirectional edge of the specified type.

pub fn out_any(self) -> Self

Add any outgoing edge.

pub fn in_any(self) -> Self

Add any incoming edge.

pub fn any(self) -> Self

Add any edge in either direction.

pub fn out_var( self, edge_type: impl Into<EdgeType>, min: usize, max: usize, ) -> Self

Add a variable-length outgoing path.

pub fn in_var( self, edge_type: impl Into<EdgeType>, min: usize, max: usize, ) -> Self

Add a variable-length incoming path.

pub fn limit(self, limit: usize) -> Self

Set result limit.

pub fn with_cycles(self) -> Self

Allow cycles in matches.

pub fn build(self) -> PathPattern

Build the pattern.

Trait Implementations

impl Default for PatternBuilder

fn default() -> Self

Returns the “default value” for a type.