/**
  * INTERNAL: This method notifies the accessor that a particular sets of writes has completed.
  * This notification can be used for such thing as flushing the batch mechanism
  */
 public void writesCompleted() {
   for (Iterator sessionEnum = getSessionsByName().values().iterator(); sessionEnum.hasNext(); ) {
     AbstractSession session = (AbstractSession) sessionEnum.next();
     if (!session.isConnected()) {
       throw DatabaseException.databaseAccessorNotConnected();
     }
   }
   for (Iterator sessionEnum = getSessionsByName().values().iterator(); sessionEnum.hasNext(); ) {
     AbstractSession session = (AbstractSession) sessionEnum.next();
     session.writesCompleted();
   }
 }
 /**
  * INTERNAL: Commit the transaction on all child sessions. This assumes that the commit of the
  * transaction will not fail because all of the modification has already taken place and no errors
  * would have occurred.
  */
 protected void basicCommitTransaction() throws DatabaseException {
   // Do one last check it make sure that all sessions are still connected.
   for (Iterator sessionEnum = getSessionsByName().values().iterator(); sessionEnum.hasNext(); ) {
     AbstractSession session = (AbstractSession) sessionEnum.next();
     if (!session.isConnected()) {
       throw DatabaseException.databaseAccessorNotConnected();
     }
   }
   for (Iterator sessionEnum = getSessionsByName().values().iterator(); sessionEnum.hasNext(); ) {
     AbstractSession session = (AbstractSession) sessionEnum.next();
     session.commitTransaction();
   }
 }