Struct EntityMigration 

pub struct EntityMigration { /* private fields */ }

One immediate-predecessor transition for a current entity declaration.

Implementations

impl EntityMigration

pub fn try_new( entity: EntitySourceKey, from: DeclaredEntityVersion, from_name: Option<EntitySourceKey>, renames: Vec<SchemaMigrationRename>, transforms: Vec<SchemaMigrationTransform>, ) -> Result<EntityMigration, SchemaContractError>

Construct and canonicalize one entity transition.

Errors

Returns a typed migration error for an empty transition, a no-op entity rename, duplicate rename ownership, duplicate transform target, or invalid transform.

pub const fn entity(&self) -> &EntitySourceKey

Borrow the current target entity key.

pub const fn from(&self) -> DeclaredEntityVersion

Return the accepted-before declared entity version.

pub const fn from_name(&self) -> Option<&EntitySourceKey>

Borrow an optional accepted-before entity name.

pub fn renames(&self) -> &[SchemaMigrationRename]

Borrow canonical rename operations.

pub fn transforms(&self) -> &[SchemaMigrationTransform]

Borrow canonical historical transforms.

Trait Implementations

impl Clone for EntityMigration

fn clone(&self) -> EntityMigration

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EntityMigration

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

Formats the value using the given formatter.

impl Eq for EntityMigration

impl PartialEq for EntityMigration

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for EntityMigration