- All Superinterfaces:
public interface PersistenceUnitUtil extends PersistenceUtilUtility interface between the application and the persistence provider managing the persistence unit.
The methods of this interface should only be invoked on entity instances obtained from or managed by entity managers for this persistence unit or on new entity instances.
All Methods Instance Methods Abstract Methods Modifier and Type Method Description
getIdentifier(Object entity)Return the id of the entity.
isLoaded(Object entity)Determine the load state of an entity belonging to the persistence unit.
isLoaded(Object entity, String attributeName)Determine the load state of a given persistent attribute of an entity belonging to the persistence unit.
boolean isLoaded(Object entity)Determine the load state of an entity belonging to the persistence unit. This method can be used to determine the load state of an entity passed as a reference. An entity is considered loaded if all attributes for which
FetchType.EAGERhas been specified have been loaded.
isLoaded(Object, String)method should be used to determine the load state of an attribute. Not doing so might lead to unintended loading of state.
getIdentifierReturn the id of the entity. A generated id is not guaranteed to be available until after the database insert has occurred. Returns null if the entity does not yet have an id.
entity- entity instance
- id of the entity
IllegalArgumentException- if the object is found not to be an entity