Enum apache_avro::types::Value

pub enum Value {
    Null,
    Boolean(bool),
    Int(i32),
    Long(i64),
    Float(f32),
    Double(f64),
    Bytes(Vec<u8>),
    String(String),
    Fixed(usize, Vec<u8>),
    Enum(u32, String),
    Union(u32, Box<Value>),
    Array(Vec<Value>),
    Map(HashMap<String, Value>),
    Record(Vec<(String, Value)>),
    Date(i32),
    Decimal(Decimal),
    TimeMillis(i32),
    TimeMicros(i64),
    TimestampMillis(i64),
    TimestampMicros(i64),
    Duration(Duration),
    Uuid(Uuid),
}

A valid Avro value.

More information about Avro values can be found in the Avro Specification

Variants

Null

A null Avro value.

Boolean(bool)

A boolean Avro value.

Int(i32)

A int Avro value.

Long(i64)

A long Avro value.

Float(f32)

A float Avro value.

Double(f64)

A double Avro value.

Bytes(Vec<u8>)

A bytes Avro value.

String(String)

A string Avro value.

Fixed(usize, Vec<u8>)

A fixed Avro value. The size of the fixed value is represented as a usize.

Enum(u32, String)

An enum Avro value.

An Enum is represented by a symbol and its position in the symbols list of its corresponding schema. This allows schema-less encoding, as well as schema resolution while reading values.

Union(u32, Box<Value>)

An union Avro value.

A Union is represented by the value it holds and its position in the type list of its corresponding schema This allows schema-less encoding, as well as schema resolution while reading values.

Array(Vec<Value>)

An array Avro value.

Map(HashMap<String, Value>)

A map Avro value.

Record(Vec<(String, Value)>)

A record Avro value.

A Record is represented by a vector of (<record name>, value). This allows schema-less encoding.

See Record for a more user-friendly support.

Date(i32)

A date value.

Serialized and deserialized as i32 directly. Can only be deserialized properly with a schema.

Decimal(Decimal)

An Avro Decimal value. Bytes are in big-endian order, per the Avro spec.

TimeMillis(i32)

Time in milliseconds.

TimeMicros(i64)

Time in microseconds.

TimestampMillis(i64)

Timestamp in milliseconds.

TimestampMicros(i64)

Timestamp in microseconds.

Duration(Duration)

Avro Duration. An amount of time defined by months, days and milliseconds.

Uuid(Uuid)

Universally unique identifier.

Implementations

impl Value

pub fn validate(&self, schema: &Schema) -> bool

Validate the value against the given Schema.

See the Avro specification for the full set of rules of schema validation.

pub fn validate_schemata(&self, schemata: Vec<&Schema>) -> bool

pub fn resolve(self, schema: &Schema) -> AvroResult<Self>

Attempt to perform schema resolution on the value, with the given Schema.

See Schema Resolution in the Avro specification for the full set of rules of schema resolution.

pub fn resolve_schemata( self, schema: &Schema, schemata: Vec<&Schema> ) -> AvroResult<Self>

Attempt to perform schema resolution on the value, with the given Schema and set of schemas to use for Refs resolution.

See Schema Resolution in the Avro specification for the full set of rules of schema resolution.

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a copy 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 From<&[u8]> for Value

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

Converts to this type from the input type.

impl<'_enum> From<&'_enum Value> for ValueKind

fn from(val: &'_enum Value) -> ValueKind

Converts to this type from the input type.

impl From<&Value> for SchemaKind

fn from(value: &Value) -> Self

Converts to this type from the input type.

impl From<&str> for Value

fn from(value: &str) -> Self

Converts to this type from the input type.

impl From<()> for Value

fn from(_: ()) -> Self

Converts to this type from the input type.

impl From<Codec> for Value

fn from(value: Codec) -> Self

Converts to this type from the input type.

impl From<Decimal> for Value

fn from(value: Decimal) -> Self

Converts to this type from the input type.

impl From<Duration> for Value

fn from(value: Duration) -> Self

Converts to this type from the input type.

impl<K, V, S> From<HashMap<K, V, S>> for Valuewhere K: Into<String>, V: Into<Self>, S: BuildHasher,

fn from(value: HashMap<K, V, S>) -> Self

Converts to this type from the input type.

impl<T> From<Option<T>> for Valuewhere T: Into<Self>,

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

Converts to this type from the input type.

impl<'a> From<Record<'a>> for Value

fn from(value: Record<'a>) -> Self

Converts to this type from the input type.

impl From<String> for Value

fn from(value: String) -> Self

Converts to this type from the input type.

impl From<Uuid> for Value

fn from(value: Uuid) -> Self

Converts to this type from the input type.

impl From<Value> for Value

fn from(value: JsonValue) -> Self

Converts to this type from the input type.

impl From<Value> for ValueKind

fn from(val: Value) -> ValueKind

Converts to this type from the input type.

impl From<Vec<u8, Global>> for Value

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

Converts to this type from the input type.

impl From<bool> for Value

fn from(value: bool) -> Self

Converts to this type from the input type.

impl From<f32> for Value

fn from(value: f32) -> Self

Converts to this type from the input type.

impl From<f64> for Value

fn from(value: f64) -> Self

Converts to this type from the input type.

impl From<i32> for Value

fn from(value: i32) -> Self

Converts to this type from the input type.

impl From<i64> for Value

fn from(value: i64) -> Self

Converts to this type from the input type.

impl From<usize> for Value

fn from(value: usize) -> Self

Converts to this type from the input type.

impl PartialEq<Value> for Value

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<Value> for JsonValue

Convert Avro values to Json values

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> AvroResult<Self>

Performs the conversion.

impl StructuralPartialEq for Value