Enum FieldPlan 

enum FieldPlan {
    Scalar,
    Struct {
        bindings: Vec<FieldBinding>,
    },
    List {
        items_nullability: Option<Nullability>,
        item_plan: Box<FieldPlan>,
    },
    Decimal {
        size: Option<usize>,
    },
    Uuid,
    Map {
        values_nullability: Option<Nullability>,
        value_plan: Box<FieldPlan>,
    },
    Enum {
        symbols: Arc<[String]>,
    },
    Union {
        bindings: Vec<FieldBinding>,
    },
    RunEndEncoded {
        values_nullability: Option<Nullability>,
        value_plan: Box<FieldPlan>,
    },
    Duration,
    TimeMillisFromSecs,
}

Per‑site encoder plan for a field. This mirrors the Avro structure, so nested optional branch order can be honored exactly as declared by the schema.

Variants

Scalar

Non-nested scalar/logical type

Struct

Record/Struct with Avro‑ordered children

Fields

bindings: Vec<FieldBinding>

List

Array with item‑site nullability and nested plan

Fields

items_nullability: Option<Nullability>

item_plan: Box<FieldPlan>

Decimal

Avro decimal logical type (bytes or fixed). size=None => bytes(decimal), Some(n) => fixed(n)

Fields

size: Option<usize>

Uuid

Avro UUID logical type (fixed)

Map

Avro map with value‑site nullability and nested plan

Fields

values_nullability: Option<Nullability>

value_plan: Box<FieldPlan>

Enum

Avro enum; maps to Arrow Dictionary<Int32, Utf8> with dictionary values exactly equal and ordered as the Avro enum symbols.

Fields

symbols: Arc<[String]>

Union

Avro union, maps to Arrow Union.

Fields

bindings: Vec<FieldBinding>

RunEndEncoded

Avro RunEndEncoded site. Values are encoded per logical row by mapping the row index to its containing run and emitting that run’s value with value_plan.

Fields

values_nullability: Option<Nullability>

value_plan: Box<FieldPlan>

Duration

Standard Avro duration logical type (fixed(12), three LE u32 values). Used when Codec::Interval is resolved, ensuring the 12-byte duration encoder is selected regardless of the avro_custom_types feature flag.

TimeMillisFromSecs

Arrow Time32(Second) mapped to Avro time-millis — values must be scaled × 1000. Used when Codec::TimeMillis is resolved for a Time32(Second) Arrow column, ensuring the scaling encoder is selected regardless of the avro_custom_types feature flag.

Implementations

impl FieldPlan

fn build(avro_dt: &AvroDataType, arrow_field: &Field) -> Result<Self, AvroError>

Trait Implementations

impl Clone for FieldPlan

fn clone(&self) -> FieldPlan

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FieldPlan

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

Formats the value using the given formatter.