Enum MetadataValue 

pub enum MetadataValue {
    String(String),
    Bool(bool),
    Number(Number),
    List(Vec<MetadataValue>),
    Map(MetadataMap),
}

A generic metadata value.

Supported variants:

• String
• Bool
• Number (serde_json::Number – can represent integer & floating point)
• List (Vec)
• Map (nested MetadataMap)

Variants

String(String)

Bool(bool)

Number(Number)

List(Vec<MetadataValue>)

Map(MetadataMap)

Implementations

impl MetadataValue

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

Convenience accessors.

pub fn as_number(&self) -> Option<&Number>

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

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

pub fn as_map(&self) -> Option<&MetadataMap>

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 From<&MetadataValue> for Value

Conversion from MetadataValue to prost_types::Value for protobuf serialization

fn from(value: &MetadataValue) -> Self

Converts to this type from the input type.

impl From<&str> for MetadataValue

fn from(value: &str) -> Self

Converts to this type from the input type.

impl From<MetadataMap> for MetadataValue

fn from(m: MetadataMap) -> Self

Converts to this type from the input type.

impl From<String> for MetadataValue

fn from(value: String) -> Self

Converts to this type from the input type.

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

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

Converts to this type from the input type.

impl From<bool> for MetadataValue

fn from(value: bool) -> Self

Converts to this type from the input type.

impl From<f64> for MetadataValue

fn from(value: f64) -> Self

Converts to this type from the input type.

impl From<i64> for MetadataValue

fn from(value: i64) -> Self

Converts to this type from the input type.

impl From<u64> for MetadataValue

fn from(value: u64) -> Self

Converts to this type from the input type.

impl JsonSchema for MetadataValue

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

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

impl<'a> TryFrom<&'a MetadataValue> for &'a str

type Error = MetadataConversionError

The type returned in the event of a conversion error.

fn try_from(value: &'a MetadataValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&MetadataValue> for String

type Error = MetadataConversionError

The type returned in the event of a conversion error.

fn try_from(value: &MetadataValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&MetadataValue> for bool

type Error = MetadataConversionError

The type returned in the event of a conversion error.

fn try_from(value: &MetadataValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&MetadataValue> for Number

type Error = MetadataConversionError

The type returned in the event of a conversion error.

fn try_from(value: &MetadataValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&MetadataValue> for i64

type Error = MetadataConversionError

The type returned in the event of a conversion error.

fn try_from(value: &MetadataValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&MetadataValue> for u64

type Error = MetadataConversionError

The type returned in the event of a conversion error.

fn try_from(value: &MetadataValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&MetadataValue> for f64

type Error = MetadataConversionError

The type returned in the event of a conversion error.

fn try_from(value: &MetadataValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&MetadataValue> for Vec<MetadataValue>

type Error = MetadataConversionError

The type returned in the event of a conversion error.

fn try_from(value: &MetadataValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&MetadataValue> for MetadataMap

type Error = MetadataConversionError

The type returned in the event of a conversion error.

fn try_from(value: &MetadataValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<MetadataValue> for String

type Error = MetadataConversionError

The type returned in the event of a conversion error.

fn try_from(value: MetadataValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<MetadataValue> for bool

type Error = MetadataConversionError

The type returned in the event of a conversion error.

fn try_from(value: MetadataValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<MetadataValue> for Number

type Error = MetadataConversionError

The type returned in the event of a conversion error.

fn try_from(value: MetadataValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<MetadataValue> for i64

type Error = MetadataConversionError

The type returned in the event of a conversion error.

fn try_from(value: MetadataValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<MetadataValue> for u64

type Error = MetadataConversionError

The type returned in the event of a conversion error.

fn try_from(value: MetadataValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<MetadataValue> for f64

type Error = MetadataConversionError

The type returned in the event of a conversion error.

fn try_from(value: MetadataValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<MetadataValue> for Vec<MetadataValue>

type Error = MetadataConversionError

The type returned in the event of a conversion error.

fn try_from(value: MetadataValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<MetadataValue> for MetadataMap

type Error = MetadataConversionError

The type returned in the event of a conversion error.

fn try_from(value: MetadataValue) -> Result<Self, Self::Error>

Performs the conversion.