The OpenJPA runtime supports broadcasting transaction-related events. By registering one or more org.apache.openjpa.event.TransactionListener s, you can receive notifications when transactions begin, flush, rollback, commit, and more. Where appropriate, event notifications include the set of persistence-capable objects participating in the transaction.

public void addTransactionListener(Object listener);
public void removeTransactionListener(Object listener);

These OpenJPAEntityManager methods allow you to add and remove listeners.

For details on the transaction framework, see the org.apache.openjpa.event package Javadoc. Also see Section 2, “ Remote Event Notification Framework ” for a description of OpenJPA's remote event support.