Example usage for org.hibernate.persister.entity EntityPersister getIdentifierGenerator

Introduction

In this page you can find the example usage for org.hibernate.persister.entity EntityPersister getIdentifierGenerator.

Prototype

IdentifierGenerator getIdentifierGenerator();

Source Link

Document

Determine which identifier generation strategy is used for this entity.

Usage

From source file:cc.alcina.framework.entity.impl.jboss.JPAHibernateImpl.java

License:Apache License

@Override
public Object beforeSpecificSetId(EntityManager entityManager, Object toPersist) throws Exception {
    SessionImplementor session = (SessionImplementor) entityManager.getDelegate();
    EntityPersister persister = session.getEntityPersister(toPersist.getClass().getName(), toPersist);
    IdentifierGenerator identifierGenerator = persister.getIdentifierGenerator();
    IdentifierProperty ip = persister.getEntityMetamodel().getIdentifierProperty();
    IdentifierValue backupUnsavedValue = setUnsavedValue(ip, IdentifierValue.ANY, new UseEntityIdGenerator());
    return new SavedId(ip, backupUnsavedValue, identifierGenerator);
}

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From source file:com.literatejava.hibernate.allocator.LinearBlockAllocator_FunctionalTest.java

License:Open Source License

/** test Block Allocation;     
 *         - basic functional test,  //from   w w w  .  j  a  va 2s  .com
 *         - use a distinct entity (EntityA) to ensure allocated IDs are as expected.
 */
@Test
public void testBlockAllocation() {
    EntityPersister persister = sessionFactory().getEntityPersister(EntityA.class.getName());
    assertTrue(persister.getIdentifierGenerator() instanceof LinearBlockAllocator);
    LinearBlockAllocator generator = (LinearBlockAllocator) persister.getIdentifierGenerator();

    int count = 20;
    long START_FROM = 10;

    EntityA[] entities = new EntityA[count];
    Session s = openSession();
    s.beginTransaction();

    for (int i = 0; i < count; i++) {
        String name = "entity " + (i + 1);
        entities[i] = new EntityA(name);
        s.save(entities[i]);
        long expectedId = START_FROM + i;
        assertEquals(expectedId, entities[i].getId().longValue());
    }
    s.getTransaction().commit();

    assertEquals(2, generator.getStats_TableAccessCount());

    s.beginTransaction();
    for (int i = 0; i < count; i++) {
        assertEquals(i + START_FROM, entities[i].getId().intValue());
        s.delete(entities[i]);
    }
    s.getTransaction().commit();
    s.close();

    // pass.
}

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