Struct TypeChange 

pub struct TypeChange {
    pub type_id: GtsTypeId,
    pub state: TypeChangeState,
    pub backward: String,
    pub forward: String,
    pub diagnostics: Vec<SchemaDiagnostic>,
    pub traits_changed: Vec<TraitChange>,
    pub rows: Option<u64>,
    pub rows_rewritten: Option<u64>,
    pub levels_not_evolvable_in_place: Vec<String>,
    pub migration_required: bool,
    pub admissible: bool,
}

The full verdict on one candidate: what the dry run reports and what a refusal explains itself with.

Fields

type_id: GtsTypeId

state: TypeChangeState

backward: String

compatible / incompatible / unknown; the direction ADR-0003 enforces.

forward: String

Computed and reported, never enforced — the same posture as the registry. It tells a producer whether an old reader still accepts new payloads.

diagnostics: Vec<SchemaDiagnostic>

Evidence for the backward verdict.

traits_changed: Vec<TraitChange>

rows: Option<u64>

Live rows of this type, when the operation needed to know.

rows_rewritten: Option<u64>

Rows a migration changed (or would change, in a dry run).

levels_not_evolvable_in_place: Vec<String>

Object levels of the candidate where a later definition will not be able to add an optional property (ContentModel::is_evolvable_in_place). Reported so “your next edit will be a major” is a warning today rather than a surprise later.

migration_required: bool

Whether this change needs more than the schemas to be admitted.

admissible: bool

Whether the gear would admit it under the options of this request.

Trait Implementations

impl Clone for TypeChange

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TypeChange

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

Formats the value using the given formatter.

impl Eq for TypeChange

impl PartialEq for TypeChange

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for TypeChange