Enum MetadataValue 

pub enum MetadataValue {
    Text(String),
    Integer(i64),
    Float(f64),
    Boolean(bool),
    DateTime(String),
    Tags(Vec<String>),
    Enum {
        value: String,
        options: Vec<String>,
    },
    Qualitative {
        value: String,
        scale: Vec<String>,
    },
    Quantitative {
        value: f64,
        unit: String,
    },
    Json(Value),
}

Metadata value types

Variants

Text(String)

Text string

Integer(i64)

Integer number

Float(f64)

Floating point number

Boolean(bool)

Boolean value

DateTime(String)

ISO 8601 timestamp

Tags(Vec<String>)

Array of strings (tags, labels)

Enum

Enum value (predefined set of options)

Fields

value: String

options: Vec<String>

Qualitative

Qualitative measure (e.g., “high”, “medium”, “low”)

Fields

value: String

scale: Vec<String>

Quantitative

Quantitative measure with unit

Fields

value: f64

unit: String

Json(Value)

JSON object for complex nested data

Implementations

impl MetadataValue

pub fn datetime_now() -> Self

Create a datetime value from timestamp

pub fn datetime(dt: DateTime<Utc>) -> Self

Create a datetime value from a DateTime

pub fn tags<I, S>(iter: I) -> Self

where I: IntoIterator<Item = S>, S: Into<String>,

Create tags from strings

pub fn enum_value( value: impl Into<String>, options: Vec<String>, ) -> Result<Self>

Create enum with validation

pub fn qualitative(value: impl Into<String>, scale: Vec<String>) -> Result<Self>

Create qualitative value

pub fn quantitative(value: f64, unit: impl Into<String>) -> Self

Create quantitative value

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MetadataValue

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

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 Serialize for MetadataValue

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 MetadataValue