Enum EdgeDirection 

pub enum EdgeDirection {
    Out,
    In,
    Both,
}

Type of orientation of the edge

Used to represent the traversal direction of an edge, supports outgoing, incoming and bi-directional traversal.

Variants

Out

Outgoing edge: from source node to target node

In

Incoming edge: pointing from target node to source node

Both

Bidirectional: contains both outgoing and incoming edges

Implementations

impl EdgeDirection

pub fn is_outgoing(&self) -> bool

Determine whether to include outgoing edges

pub fn is_incoming(&self) -> bool

Determine if the inbound edge is included

pub fn reverse(&self) -> EdgeDirection

Get Reverse Direction

pub fn is_forward(&self) -> bool

Determine if it is positive (outgoing edge) For Forward/Backward naming compatibility

pub fn is_backward(&self) -> bool

Determine if it is inverted (inbound edge) For Forward/Backward naming compatibility

impl EdgeDirection

pub fn parse(s: &str) -> Result<EdgeDirection, String>

Parse a direction name, trimming surrounding whitespace and accepting every spelling the planners produce (bidirect/undirected included). Unknown input is an error: silently widening a typo to a bidirectional scan returns wrong rows at double the cost.

Trait Implementations

impl Clone for EdgeDirection

fn clone(&self) -> EdgeDirection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for EdgeDirection

impl Debug for EdgeDirection

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

Formats the value using the given formatter.

impl Eq for EdgeDirection

impl From<&str> for EdgeDirection

fn from(s: &str) -> EdgeDirection

Converts to this type from the input type.

impl From<EdgeDirection> for ExtendDirection

fn from(d: EdgeDirection) -> Self

Converts to this type from the input type.

impl From<String> for EdgeDirection

fn from(s: String) -> EdgeDirection

Converts to this type from the input type.

impl FromStr for EdgeDirection

type Err = String

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<EdgeDirection, <EdgeDirection as FromStr>::Err>

Parses a string s to return a value of this type.

impl Hash for EdgeDirection

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for EdgeDirection

fn eq(&self, other: &EdgeDirection) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for EdgeDirection