Enum MetadataValue 

pub enum MetadataValue {
    Null,
    Bool(bool),
    Int(i64),
    Float(f64),
    String(String),
    Bytes(Vec<u8>),
    Array(Vec<MetadataValue>),
    Object(HashMap<String, MetadataValue>),
    Timestamp(u64),
    Geo {
        lat: f64,
        lon: f64,
    },
    Reference(RefTarget),
    References(Vec<RefTarget>),
}

Metadata value types

Variants

Null

Bool(bool)

Int(i64)

Float(f64)

String(String)

Bytes(Vec<u8>)

Array(Vec<MetadataValue>)

Object(HashMap<String, MetadataValue>)

Timestamp(u64)

Geo

Fields

lat: f64

lon: f64

Reference(RefTarget)

Reference to another entity (enables cross-links from metadata)

References(Vec<RefTarget>)

Multiple references (for one-to-many relationships)

Implementations

impl MetadataValue

pub fn metadata_type(&self) -> MetadataType

Get the type of this value

pub fn is_reference(&self) -> bool

Check if this value is a reference

pub fn as_reference(&self) -> Option<&RefTarget>

Get reference target if this is a Reference

pub fn as_references(&self) -> Option<&[RefTarget]>

Get reference targets if this is a References

pub fn to_value(&self) -> Value

Convert to Value (schema type)

pub fn from_value(value: &Value) -> MetadataValue

Create from Value (schema type)

pub fn matches(&self, filter: &MetadataFilter) -> bool

Check if value matches a filter

Trait Implementations

impl Clone for MetadataValue

fn clone(&self) -> MetadataValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MetadataValue

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

Formats the value using the given formatter.

impl From<&str> for MetadataValue

fn from(s: &str) -> MetadataValue

Converts to this type from the input type.

impl From<NodeRef> for MetadataValue

fn from(r: NodeRef) -> MetadataValue

Converts to this type from the input type.

impl From<RefTarget> for MetadataValue

fn from(r: RefTarget) -> MetadataValue

Converts to this type from the input type.

impl From<String> for MetadataValue

fn from(s: String) -> MetadataValue

Converts to this type from the input type.

impl From<TableRef> for MetadataValue

fn from(r: TableRef) -> MetadataValue

Converts to this type from the input type.

impl From<Vec<RefTarget>> for MetadataValue

fn from(refs: Vec<RefTarget>) -> MetadataValue

Converts to this type from the input type.

impl From<VectorRef> for MetadataValue

fn from(r: VectorRef) -> MetadataValue

Converts to this type from the input type.

impl From<bool> for MetadataValue

fn from(b: bool) -> MetadataValue

Converts to this type from the input type.

impl From<f64> for MetadataValue

fn from(n: f64) -> MetadataValue

Converts to this type from the input type.

impl From<i64> for MetadataValue

fn from(n: i64) -> MetadataValue

Converts to this type from the input type.

impl PartialEq for MetadataValue

fn eq(&self, other: &MetadataValue) -> 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 StructuralPartialEq for MetadataValue