org.h2.mvstore.tx

Interface TransactionStore.RollbackListener

Enclosing class:

TransactionStore

public static interface TransactionStore.RollbackListener

This listener can be registered with the transaction to be notified of every compensating change during transaction rollback. Normally this is not required, if no external resources were modified, because state of all transactional maps will be restored automatically. Only state of external resources, possibly modified by triggers need to be restored.

Method Summary

Modifier and Type	Method and Description
void	onRollback(MVMap<java.lang.Object,org.h2.value.VersionedValue<java.lang.Object>> map, java.lang.Object key, org.h2.value.VersionedValue<java.lang.Object> existingValue, org.h2.value.VersionedValue<java.lang.Object> restoredValue) Notified of a single map change (add/update/remove)

Method Detail

onRollback

void onRollback(MVMap<java.lang.Object,org.h2.value.VersionedValue<java.lang.Object>> map,
                java.lang.Object key,
                org.h2.value.VersionedValue<java.lang.Object> existingValue,
                org.h2.value.VersionedValue<java.lang.Object> restoredValue)

Notified of a single map change (add/update/remove)

Parameters:

map - modified

key - of the modified entry

existingValue - value in the map (null if delete is rolled back)

restoredValue - value to be restored (null if add is rolled back)