org.hibernate.cache.spi

Interface OptimisticCacheSource

All Known Subinterfaces:

EntityPersister, Loadable, Lockable, OuterJoinLoadable, PostInsertIdentityPersister, Queryable, SQLLoadable, UniqueKeyLoadable

All Known Implementing Classes:

AbstractEntityPersister, JoinedSubclassEntityPersister, SingleTableEntityPersister, UnionSubclassEntityPersister

public interface OptimisticCacheSource

Contract for sources of optimistically lockable data sent to the second level cache. <p/> Note currently EntityPersisters are the only viable source.

Method Summary

Modifier and Type	Method and Description
Comparator	getVersionComparator() Get the comparator used to compare two different version values.
boolean	isVersioned() Is the data to be cached considered versioned? <p/> If true, it is illegal for getVersionComparator() to return null.

Method Detail

isVersioned

boolean isVersioned()

Is the data to be cached considered versioned? <p/> If true, it is illegal for getVersionComparator() to return null.

Returns:

True if the data is versioned; false otherwise.

getVersionComparator

Comparator getVersionComparator()

Get the comparator used to compare two different version values. <p/> May return null <b>if</b> isVersioned() returns false.

Returns:

Comparator used to compare two different version values.