Package com.hazelcast.cache
Interface BackupAwareEntryProcessor<K,V,T>
- Type Parameters:
K
- the type of keys maintained by this cacheV
- the type of cached valuesT
- the type of the return value
- All Superinterfaces:
javax.cache.processor.EntryProcessor<K,
V, T>
public interface BackupAwareEntryProcessor<K,V,T>
extends javax.cache.processor.EntryProcessor<K,V,T>
An invocable function that allows applications to perform compound operations
on a
Cache.Entry
atomically, according to the defined
consistency of a Cache
.
The difference from the normal EntryProcessor
implementations, where a backup is done sending the completely changed resulting
object to the backup-partition, is that implementations of this sub-interface can create
additional EntryProcessor
instances that are sent
to the backup partitions to apply logic which is either different from the owner
partition (e.g. not sending emails) or is the simple case of being similar to the main
operations. In the later case createBackupEntryProcessor()
can also return
this.
- Since:
- 3.4
- See Also:
-
EntryProcessor
-
Method Summary
Modifier and TypeMethodDescriptionEither creates a new, specializedEntryProcessor
to be executed on the backup-partition, or returnsMethods inherited from interface javax.cache.processor.EntryProcessor
process
-
Method Details
-
createBackupEntryProcessor
Either creates a new, specializedEntryProcessor
to be executed on the backup-partition, or returnsthis
to execute the same processor remotely.If null is returned, the value is backed up using the normal value backup mechanism, no exception is thrown, and the update is applied as expected.
- Returns:
- the backup-partition EntryProcessor
-