Struct ConstraintManager 

pub struct ConstraintManager { /* private fields */ }

Implementations

impl ConstraintManager

pub fn new() -> Self

pub fn add_constraint(&mut self, constraint: Constraint)

pub fn get_constraints(&self, entity: &str) -> &[Constraint]

pub fn validate_create( &self, entity: &Entity, _batch: &mut BatchWriter, storage: &Storage, ) -> Result<()>

Errors

Returns an error if any constraint is violated.

pub fn validate_update( &self, entity: &Entity, old_entity: &Entity, _batch: &mut BatchWriter, storage: &Storage, ) -> Result<()>

Errors

Returns an error if any constraint is violated.

pub fn validate_delete( &self, entity: &Entity, storage: &Storage, ownership_ctx: Option<&OwnershipContext<'_>>, ) -> Result<Vec<DeleteOperation>>

Errors

Returns an error if a foreign key constraint prevents deletion.

pub fn persist_constraint( &self, batch: &mut BatchWriter, constraint: &Constraint, ) -> Result<()>

Errors

Returns an error if serialization fails.

pub fn load_constraints(&mut self, storage: &Storage) -> Result<()>

Errors

Returns an error if reading or deserializing constraints fails.

pub fn entity_names(&self) -> Vec<String>

pub fn all_constraints(&self) -> &HashMap<String, Vec<Constraint>>

pub fn remove_constraint( &mut self, batch: &mut BatchWriter, entity: &str, name: &str, )

Trait Implementations

impl Default for ConstraintManager

fn default() -> Self

Returns the “default value” for a type.