Struct SkiffSchema 

pub struct SkiffSchema {
    pub wire_type: WireType,
    pub name: Option<String>,
    pub children: Vec<Schema>,
}

One node in a Skiff schema tree.

Fields

wire_type: WireType

How this node is encoded.

name: Option<String>

Optional name used to map a table field to a table column.

children: Vec<Schema>

Child schema nodes, in wire order.

Implementations

impl Schema

pub const fn leaf(wire_type: WireType) -> Schema

Creates an unnamed schema node with no children.

pub fn named(name: impl Into<String>, wire_type: WireType) -> Schema

Creates a named schema node with no children.

pub fn tuple(children: impl IntoIterator<Item = Schema>) -> Schema

Creates a tuple schema from children in their wire order.

pub fn optional(self) -> Schema

Wraps this schema as variant8<nothing; self>, the table encoding for an optional simple column.

pub fn validate(&self) -> Result<(), SchemaError>

Validates this schema independently of a table or format.

This deliberately checks structural safety only. Table-specific rules such as dense/sparse columns are validated by the job/client layer that knows which format direction it is configuring.

pub fn to_yson(&self) -> YsonValue

Renders this schema as the YSON map used in table_skiff_schemas.

pub fn from_yson(input: &YsonValue) -> Result<Schema, SchemaError>

Parses and structurally validates a schema YSON map.

Trait Implementations

impl Clone for Schema

fn clone(&self) -> Schema

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Schema

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

Formats the value using the given formatter.

impl Eq for Schema

impl PartialEq for Schema

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Schema