Enum Value 

pub enum Value {
    Node(Node),
    Edge(Edge),
    Property(Property),
    List(Vec<Value>),
    Map(HashMap<String, Value>),
    Path {
        nodes: Vec<Node>,
        edges: Vec<Edge>,
    },
    Null,
}

Variants

Node(Node)

Edge(Edge)

Property(Property)

List(Vec<Value>)

Map(HashMap<String, Value>)

A Cypher map that can hold any Value — including graph elements (Node, Edge, Path) which Property::Map can’t represent. Only constructed by Expr::Map when one of the entries evaluates to a non-Property shape (e.g. {u: node_u}). Purely-scalar map literals still lower to Value::Property(Property::Map(...)) so node / edge property storage and the wire format stay unchanged.

Path

A Cypher path — a materialized traversal produced by MATCH p = (...)-[...]->(...). The invariant is nodes.len() == edges.len() + 1; a zero-hop path (MATCH p = (n)) has one node and zero edges. Stored alongside the other Value variants (rather than inside Property) because paths carry full Node/Edge values which the backend-neutral Property type can’t hold.

Fields

nodes: Vec<Node>

edges: Vec<Edge>

Null

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Value

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Value

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Value

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Value

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Value