io.hypersistence.optimizer.hibernate.decorator

Class SharedTableEntities

java.lang.Object

io.hypersistence.optimizer.hibernate.decorator.SharedTableEntities

public final class SharedTableEntities
extends Object

The SharedTableEntities resolves, once per SessionFactory, the entities whose tables are also mapped by an entity belonging to a different hierarchy, as only those entities can trigger the TableRowAlreadyManagedEvent.

The session decorators check this before scanning the persistence context on every entity load. Otherwise, loading N entities in the same Session would take O(N^2) time, since each load would iterate over all the entities already managed by the persistence context.

The entity persisters are resolved reflectively, as the metamodel API differs between Hibernate versions.

Since:

2.14.0

Author:

Vlad Mihalcea

Method Summary

Modifier and Type	Method and Description
static boolean	isSharingTables(Object sessionFactory, String entityName) Check whether the tables of the given entity are also mapped by an entity from a different hierarchy.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

isSharingTables

public static boolean isSharingTables(Object sessionFactory,
                                      String entityName)

Check whether the tables of the given entity are also mapped by an entity from a different hierarchy.

Parameters:

sessionFactory - the SessionFactory the entity persister belongs to

entityName - the Hibernate entity name

Returns:

true if another entity hierarchy maps the same tables, or if the entity persisters could not be resolved