Enum FieldKind 

pub enum FieldKind {
    Account,
    Blob {
        max_len: Option<u32>,
    },
    Bool,
    Date,
    Decimal {
        scale: u32,
    },
    Duration,
    Enum {
        path: &'static str,
        variants: &'static [EnumVariantModel],
    },
    Float32,
    Float64,
    Int8,
    Int16,
    Int32,
    Int64,
    Int128,
    IntBig {
        max_bytes: u32,
    },
    Principal,
    Subaccount,
    Text {
        max_len: Option<u32>,
    },
    Timestamp,
    Nat8,
    Nat16,
    Nat32,
    Nat64,
    Nat128,
    NatBig {
        max_bytes: u32,
    },
    Ulid,
    Unit,
    Relation {
        target_path: &'static str,
        target_entity_name: &'static str,
        target_entity_tag: EntityTag,
        target_store_path: &'static str,
        key_kind: &'static Self,
    },
    List(&'static Self),
    Set(&'static Self),
    Map {
        key: &'static Self,
        value: &'static Self,
    },
    Composite {
        path: &'static str,
        codec: CompositeCodec,
        shape: &'static CompositeShapeModel,
    },
}

FieldKind

Minimal runtime type surface needed by planning, validation, and execution.

Scalar and collection variants align with runtime Value families. Enum and composite variants additionally carry complete generated proposal metadata that accepted catalog publication resolves into stable IDs.

Variants

Account

Blob

Fields

max_len: Option<u32>

Optional schema-declared maximum byte length for blob fields.

Bool

Date

Decimal

Fields

scale: u32

Required schema-declared fractional scale for decimal fields.

Duration

Enum

Fields

path: &'static str

Fully-qualified enum type path used for strict filter normalization.

variants: &'static [EnumVariantModel]

Declared per-variant payload decode metadata.

Float32

Float64

Int8

Int16

Int32

Int64

Int128

IntBig

Fields

max_bytes: u32

Maximum accepted persisted payload byte length.

Principal

Subaccount

Text

Fields

max_len: Option<u32>

Optional schema-declared maximum Unicode scalar count for text fields.

Timestamp

Nat8

Nat16

Nat32

Nat64

Nat128

NatBig

Fields

max_bytes: u32

Maximum accepted persisted payload byte length.

Ulid

Unit

Relation

Enforced typed relation; key_kind reflects the referenced key type.

Fields

target_path: &'static str

Fully-qualified Rust type path for diagnostics.

target_entity_name: &'static str

Stable external name used in storage keys.

target_entity_tag: EntityTag

Stable runtime identity used on hot execution paths.

target_store_path: &'static str

Data store path where the target entity is persisted.

key_kind: &'static Self

List(&'static Self)

Set(&'static Self)

Map

Deterministic, unordered key/value collection.

Map fields are persistable and patchable, but not queryable or indexable.

Fields

key: &'static Self

value: &'static Self

Composite

Exact nominal generated record, tuple, or newtype.

Fields

path: &'static str

Stable fully-qualified generated type path.

codec: CompositeCodec

Canonical persisted composite grammar.

shape: &'static CompositeShapeModel

Complete generated proposal shape.

Implementations

impl FieldKind

pub const fn value_kind(&self) -> RuntimeValueKind

pub const fn is_deterministic_collection_shape(&self) -> bool

Returns true if this field shape is permitted in persisted or query-visible schemas under the current determinism policy.

This shape-level check is structural only; query-time policy enforcement (for example, map predicate fencing) is applied at query construction and validation boundaries.

Trait Implementations

impl Clone for FieldKind

fn clone(&self) -> FieldKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FieldKind

impl Debug for FieldKind

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

Formats the value using the given formatter.