Enum Value

Source

#[non_exhaustive]pub enum Value {
Show 13 variants    Null,
    Bool(bool),
    Int(i64),
    Float(f64),
    String(String),
    Bytes(Vec<u8>),
    List(Vec<Value>),
    Map(HashMap<String, Value>),
    Node(Node),
    Edge(Edge),
    Path(Path),
    Vector(Vec<f32>),
    Temporal(TemporalValue),
}

Expand description

Dynamic value type for properties, parameters, and results.

Preserves the distinction between integers and floats, and includes graph-specific variants for nodes, edges, paths, and vectors.

Note: PartialEq, Eq, and Hash are implemented manually to support using Value as a HashMap key. The Value::Float arm uses a normalized total ordering rather than raw IEEE-754: 0.0 equals -0.0, and NaN equals NaN (so Eq’s reflexivity holds). Hash is consistent with this: all zeros hash alike and all NaNs hash alike. All other floats compare and hash by their (canonical) bit representation. This affects only internal bucketing — Cypher =/IN/DISTINCT route through cypher_eq, not here.

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

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Null

JSON/Cypher null.

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Bool(bool)

Boolean value.

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Int(i64)

64-bit signed integer.

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Float(f64)

64-bit floating-point number.

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String(String)

UTF-8 string.

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Bytes(Vec<u8>)

Raw byte buffer.

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List(Vec<Value>)

Ordered list of values.

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Map(HashMap<String, Value>)

String-keyed map of values.

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Node(Node)

Graph node with VID, label, and properties.

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Edge(Edge)

Graph edge with EID, type, endpoints, and properties.

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Path(Path)

Graph path (alternating nodes and edges).

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Vector(Vec<f32>)

Dense float vector for similarity search.

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Temporal(TemporalValue)

Typed temporal value (date, time, datetime, duration).

Enum Value Copy item path

Variants (Non-exhaustive)§

Null

Bool(bool)

Int(i64)

Float(f64)

String(String)

Bytes(Vec<u8>)

List(Vec<Value>)

Map(HashMap<String, Value>)

Node(Node)

Edge(Edge)

Path(Path)

Vector(Vec<f32>)

Temporal(TemporalValue)

Implementations§

impl Value

pub fn is_null(&self) -> bool

pub fn as_bool(&self) -> Option<bool>

pub fn as_i64(&self) -> Option<i64>

pub fn as_u64(&self) -> Option<u64>

pub fn as_f64(&self) -> Option<f64>

pub fn as_str(&self) -> Option<&str>

pub fn is_i64(&self) -> bool

pub fn is_f64(&self) -> bool

pub fn is_string(&self) -> bool

pub fn is_number(&self) -> bool

pub fn as_array(&self) -> Option<&Vec<Value>>

pub fn as_object(&self) -> Option<&HashMap<String, Value>>

pub fn is_bool(&self) -> bool

pub fn is_list(&self) -> bool

pub fn is_map(&self) -> bool

pub fn get(&self, key: &str) -> Option<&Value>

pub fn is_temporal(&self) -> bool

pub fn as_temporal(&self) -> Option<&TemporalValue>

Trait Implementations§

impl Clone for Value

fn clone(&self) -> Value

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

impl Debug for Value

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

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

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where __D: Deserializer<'de>,

impl Display for Value

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

impl Eq for Value

impl From<&str> for Value

fn from(v: &str) -> Self

impl From<String> for Value

fn from(v: String) -> Self

impl From<Value> for Value

fn from(v: Value) -> Self

impl From<Value> for Value

fn from(v: Value) -> Self

impl From<Vec<f32>> for Value

fn from(v: Vec<f32>) -> Self

impl From<bool> for Value

fn from(v: bool) -> Self

impl From<f32> for Value

fn from(v: f32) -> Self

impl From<f64> for Value

fn from(v: f64) -> Self

impl From<i32> for Value

fn from(v: i32) -> Self

impl From<i64> for Value

fn from(v: i64) -> Self

impl From<u64> for Value

fn from(v: u64) -> Self

impl From<usize> for Value

fn from(v: usize) -> Self

impl Hash for Value

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

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

impl PartialEq for Value

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

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

impl Serialize for Value

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

impl TryFrom<&Value> for String

type Error = UniError

Enum Value

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where __D: Deserializer<'de>,

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

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

impl<T> TryFrom<&Value> for Option<T>
where T: for<'a> TryFrom<&'a Value, Error = UniError>,

impl<T> TryFrom<&Value> for Vec<T>
where T: for<'a> TryFrom<&'a Value, Error = UniError>,