Struct SchemaMigrationPlanner 

pub struct SchemaMigrationPlanner { /* private fields */ }

SchemaMigrationPlanner

SchemaMigrationPlanner is the schema-aware derivation boundary above db::migration. It validates descriptor identity against known runtime models and emits one deterministic row-op migration plan for the lower execution engine.

Implementations

impl SchemaMigrationPlanner

pub fn new( entities: Vec<SchemaMigrationEntityTarget>, ) -> Result<Self, InternalError>

Build one planner from canonical schema-evolution entity targets.

pub fn from_models( models: &[&'static EntityModel], ) -> Result<Self, InternalError>

Build one planner directly from runtime entity models.

pub fn plan( &self, descriptor: &SchemaMigrationDescriptor, ) -> Result<MigrationPlan, InternalError>

Derive one deterministic low-level migration plan from a descriptor.

Trait Implementations

impl Clone for SchemaMigrationPlanner

fn clone(&self) -> SchemaMigrationPlanner

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SchemaMigrationPlanner

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

Formats the value using the given formatter.