Struct apache_avro::schema::UnionSchema

pub struct UnionSchema { /* private fields */ }

A description of a Union schema

Implementations

impl UnionSchema

pub fn new(schemas: Vec<Schema>) -> AvroResult<Self>

Creates a new UnionSchema from a vector of schemas.

pub fn variants(&self) -> &[Schema]

Returns a slice to all variants of this schema.

pub fn is_nullable(&self) -> bool

Returns true if the any of the variants of this UnionSchema is Null.

pub fn find_schema(&self, value: &Value) -> Option<(usize, &Schema)>

👎Deprecated since 0.15.0: Please use find_schema_with_known_schemata instead

Optionally returns a reference to the schema matched by this value, as well as its position within this union.

pub fn find_schema_with_known_schemata<S: Borrow<Schema>>( &self, value: &Value, known_schemata: Option<&HashMap<Name, S>> ) -> Option<(usize, &Schema)>

Optionally returns a reference to the schema matched by this value, as well as its position within this union.

Extra arguments:

• known_schemata - mapping between Name and Schema - if passed, additional external schemas would be used to resolve references.

Trait Implementations

impl Clone for UnionSchema

fn clone(&self) -> UnionSchema

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for UnionSchema

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

Formats the value using the given formatter.

impl PartialEq<UnionSchema> for UnionSchema

fn eq(&self, other: &UnionSchema) -> 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.