Struct RelationshipManager 

pub struct RelationshipManager { /* private fields */ }

Cell-based RelationshipManager for handling entity relationship cascades.

This manager discovers relationships via inventory at initialization, builds lookup indexes for efficient cascade processing, and provides methods for processing events and establishing relations on startup.

Unlike the actor-based version, this implementation uses CellServerCtx for queries and event publishing, keeping it decoupled from direct store and event processor access.

Implementations

impl RelationshipManager

pub fn new() -> RelationshipManager

Create a new RelationshipManager with lookup tables built from inventory.

pub fn forward_set( &self, item: Arc<dyn AnyItem>, ctx: &CellServerCtx, ) -> Result<(), PersistError>

Forward a SET event for relationship processing.

Handles EnsureFor: when a dependency entity is created, ensures all derived entities exist for all combinations.

pub fn forward_del( &self, item: Arc<dyn AnyItem>, ctx: &CellServerCtx, ) -> Result<(), PersistError>

Forward a DEL event for relationship processing.

Handles:

• BelongsTo cascade deletes (parent deleted → delete children)
• OwnsMany parent deletes (parent deleted → delete owned children)
• OwnsMany child deletes (child deleted → update parent arrays)

pub fn forward_del_batch( &self, items: &[Arc<dyn AnyItem>], ctx: &CellServerCtx, ) -> Result<(), PersistError>

Forward a batch of DEL events for relationship processing.

Items should all be the same entity type. This keeps cascade deletes grouped so downstream stores and views can process one wider delete wave instead of thousands of tiny per-parent cascades.

pub fn establish_relations( &self, ctx: &CellServerCtx, ) -> Result<(), PersistError>

Establish relations on startup (called after durable backend catchup).

This performs:

1. BelongsTo orphan cleanup: Delete children pointing to non-existent parents
2. OwnsMany orphan cleanup: Delete children not referenced by any parent
3. EnsureFor initialization: Create missing entities for all dependency combinations

Trait Implementations

impl Default for RelationshipManager

fn default() -> RelationshipManager

Returns the “default value” for a type.