Enum Value 

pub enum Value {
    Null,
    Bool(bool),
    Int64(i64),
    Float64(f64),
    String(Arc<str>),
    Bytes(Arc<[u8]>),
    Timestamp(Timestamp),
    List(Arc<[Value]>),
    Map(Arc<BTreeMap<PropertyKey, Value>>),
}

A dynamically-typed property value.

This enum represents all possible value types that can be stored as properties on nodes and edges. It supports the GQL type system.

Variants

Null

Null/missing value

Bool(bool)

Boolean value

Int64(i64)

64-bit signed integer

Float64(f64)

64-bit floating point

String(Arc<str>)

UTF-8 string (uses Arc for cheap cloning)

Bytes(Arc<[u8]>)

Binary data

Timestamp(Timestamp)

Timestamp with timezone

List(Arc<[Value]>)

Ordered list of values

Map(Arc<BTreeMap<PropertyKey, Value>>)

Key-value map (uses BTreeMap for deterministic ordering)

Implementations

impl Value

pub const fn is_null(&self) -> bool

Returns true if this value is null.

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

Returns the boolean value if this is a Bool, otherwise None.

pub const fn as_int64(&self) -> Option<i64>

Returns the integer value if this is an Int64, otherwise None.

pub const fn as_float64(&self) -> Option<f64>

Returns the float value if this is a Float64, otherwise None.

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

Returns the string value if this is a String, otherwise None.

pub fn as_bytes(&self) -> Option<&[u8]>

Returns the bytes value if this is Bytes, otherwise None.

pub const fn as_timestamp(&self) -> Option<Timestamp>

Returns the timestamp value if this is a Timestamp, otherwise None.

pub fn as_list(&self) -> Option<&[Value]>

Returns the list value if this is a List, otherwise None.

pub fn as_map(&self) -> Option<&BTreeMap<PropertyKey, Value>>

Returns the map value if this is a Map, otherwise None.

pub const fn type_name(&self) -> &'static str

Returns the type name of this value.

pub fn serialize(&self) -> Vec<u8>

Serializes this value to bytes.

pub fn deserialize(bytes: &[u8]) -> Result<Self, DecodeError>

Deserializes a value from bytes.

Errors

Returns an error if the bytes do not represent a valid Value.

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 Display for Value

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

Formats the value using the given formatter.

impl From<&[u8]> for Value

fn from(b: &[u8]) -> Self

Converts to this type from the input type.

impl From<&str> for Value

fn from(s: &str) -> Self

Converts to this type from the input type.

impl From<Arc<str>> for Value

fn from(s: Arc<str>) -> Self

Converts to this type from the input type.

impl<T: Into<Value>> From<Option<T>> for Value

fn from(opt: Option<T>) -> Self

Converts to this type from the input type.

impl From<String> for Value

fn from(s: String) -> Self

Converts to this type from the input type.

impl From<Timestamp> for Value

fn from(t: Timestamp) -> Self

Converts to this type from the input type.

impl<T: Into<Value>> From<Vec<T>> for Value

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

Converts to this type from the input type.

impl From<Vec<u8>> for Value

fn from(b: Vec<u8>) -> Self

Converts to this type from the input type.

impl From<bool> for Value

fn from(b: bool) -> Self

Converts to this type from the input type.

impl From<f32> for Value

fn from(f: f32) -> Self

Converts to this type from the input type.

impl From<f64> for Value

fn from(f: f64) -> Self

Converts to this type from the input type.

impl From<i32> for Value

fn from(i: i32) -> Self

Converts to this type from the input type.

impl From<i64> for Value

fn from(i: i64) -> Self

Converts to this type from the input type.

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