Struct MigrationRegistry 

pub struct MigrationRegistry { /* private fields */ }

Registry of migration steps that can find paths between versions.

Implementations

impl MigrationRegistry

pub fn new() -> Self

Create an empty registry.

pub fn register(&mut self, step: MigrationStep)

Register a migration step.

pub fn find_path( &self, from: &SchemaVersion, to: &SchemaVersion, ) -> Result<Vec<&MigrationStep>, MigrationError>

Find a migration path from one version to another.

pub fn migrate( &self, definition: &mut HashMap<String, String>, from: &SchemaVersion, to: &SchemaVersion, ) -> Result<Vec<String>, MigrationError>

Execute a full migration on a definition.

pub fn step_count(&self) -> usize

Return how many steps are registered.

pub fn known_versions(&self) -> Vec<SchemaVersion>

List all registered versions (source and destination).

Trait Implementations

impl Clone for MigrationRegistry

fn clone(&self) -> MigrationRegistry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MigrationRegistry

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

Formats the value using the given formatter.

impl Default for MigrationRegistry

fn default() -> Self

Returns the “default value” for a type.