Index

The entity_managers package contains classes responsible for managing high-level database operations across all entity types in the Merlin system.

Each manager provides CRUD (Create, Read, Update, Delete) operations tailored to a specific entity, such as studies, runs, or workers. These managers act as intermediaries between the underlying data models and higher-level business logic, encapsulating shared behaviors and coordinating entity relationships, lifecycle events, and cross-references.

Modules:

Name	Description
entity_manager.py	Defines the abstract base class EntityManager, which provides shared infrastructure and helper methods for all entity managers.
logical_worker_manager.py	Manages logical workers, including queue-based identity resolution and cleanup of run associations on deletion.
physical_worker_manager.py	Manages physical workers and handles cleanup of references from associated logical workers.
run_manager.py	Manages run entities and coordinates updates to related studies and logical workers.
study_manager.py	Manages study entities and orchestrates the creation and deletion of studies along with their associated runs.

These managers rely on the Merlin results backend and may optionally reference each other via the central MerlinDatabase class to perform coordinated, entity-spanning operations.