import org.hibernate.stat.CollectionStatistics; //导入依赖的package包/类
/**
 * Get collection statistics per role
 *
 * @param role collection role
 *
 * @return CollectionStatistics
 */
public CollectionStatistics getCollectionStatistics(String role) {
	ConcurrentCollectionStatisticsImpl cs = (ConcurrentCollectionStatisticsImpl) collectionStatistics.get( role );
	if ( cs == null ) {
		cs = new ConcurrentCollectionStatisticsImpl( role );
		ConcurrentCollectionStatisticsImpl previous;
		if ( ( previous = (ConcurrentCollectionStatisticsImpl) collectionStatistics.putIfAbsent(
				role, cs
		) ) != null ) {
			cs = previous;
		}
	}
	return cs;
}
 

import org.hibernate.stat.CollectionStatistics; //导入依赖的package包/类
private CollectionStatistics getStatistics(final EntityManagerFactory entityManagerFactory, String collectionName) {
    HibernateEntityManagerFactory entityManagerFactoryImpl = (HibernateEntityManagerFactory) entityManagerFactory;
    SessionFactory sessionFactory = entityManagerFactoryImpl.getSessionFactory();
    if (sessionFactory != null) {
        return sessionFactory.getStatistics().getCollectionStatistics(collectionName);
    }
    return null;
}
 

import org.hibernate.stat.CollectionStatistics; //导入依赖的package包/类
public CollectionStatistics getCollectionStatistics(String role) {
    return null;
}
 

import org.hibernate.stat.CollectionStatistics; //导入依赖的package包/类
/**
 * @see StatisticsServiceMBean#getCollectionStatistics(java.lang.String)
 */
public CollectionStatistics getCollectionStatistics(String role) {
	return stats.getCollectionStatistics(role);
}
 

import org.hibernate.stat.CollectionStatistics; //导入依赖的package包/类
public CollectionStatistics getCollectionStatistics(String arg0) {
	return delegate.getCollectionStatistics( arg0 );
}
 

import org.hibernate.stat.CollectionStatistics; //导入依赖的package包/类
@Override
public Object invoke(Object... args) {
    CollectionStatistics statistics = getStatistics(getEntityManagerFactory(args), getStatisticName(args));
    return Long.valueOf(statistics != null ? statistics.getUpdateCount() : 0);
}