Struct SchemaMigrationDescriptor 

pub struct SchemaMigrationDescriptor { /* private fields */ }

SchemaMigrationDescriptor

SchemaMigrationDescriptor is the schema-evolution authority for one high-level migration. It names the migration, freezes the monotonic version, records human-facing description text, and carries validated schema/data intent for planning.

Implementations

impl SchemaMigrationDescriptor

pub fn new( migration_id: EntityName, version: u64, description: impl Into<String>, intent: SchemaMigrationStepIntent, data_transformation: Option<SchemaDataTransformation>, ) -> Result<Self, InternalError>

Build one validated schema migration descriptor.

pub const fn migration_id(&self) -> EntityName

Return the canonical migration identity.

pub const fn version(&self) -> u64

Return the monotonic schema migration version.

pub const fn description(&self) -> &str

Borrow the descriptor description.

pub const fn intent(&self) -> &SchemaMigrationStepIntent

Borrow the high-level schema change intent.

pub const fn data_transformation(&self) -> Option<&SchemaDataTransformation>

Borrow the optional data transformation.

Trait Implementations

impl Clone for SchemaMigrationDescriptor

fn clone(&self) -> SchemaMigrationDescriptor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SchemaMigrationDescriptor

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

Formats the value using the given formatter.