transactionaldataregion.java

一个Java持久层类库

package org.hibernate.cache;

/**
 * Defines contract for regions which hold transactionally-managed data.
 * <p/>
 * The data is not transactionally managed within the region; merely it is
 * transactionally-managed in relation to its association with a particular
 * {@link org.hibernate.Session}.
 *
 * @author Steve Ebersole
 */
public interface TransactionalDataRegion extends Region {
	/**
	 * Is the underlying cache implementation aware of (and "participating in")
	 * ongoing JTA transactions?
	 * <p/>
	 * Regions which report that they are transaction-aware are considered
	 * "synchronous", in that we assume we can immediately (i.e. synchronously)
	 * write the changes to the cache and that the cache will properly manage
	 * application of the written changes within the bounds of ongoing JTA
	 * transactions.  Conversely, regions reporting false are considered
	 * "asynchronous", where it is assumed that changes must be manually
	 * delayed by Hibernate until we are certain that the current transaction
	 * is successful (i.e. maintaining READ_COMMITTED isolation).
	 *
	 * @return True if transaction aware; false otherwise.
	 */
	public boolean isTransactionAware();

	public CacheDataDescription getCacheDataDescription();
}