import org.eclipse.persistence.sessions.DatabaseLogin; //导入依赖的package包/类
/**
 * {@inheritDoc}
 */
@Override
public void customize(Session session) throws Exception {
    String sessionName = session.getName();

    // double-checked locking on ConcurrentMap
    List<Sequence> sequences = sequenceMap.get(sessionName);
    if (sequences == null) {
        sequences = sequenceMap.putIfAbsent(sessionName, loadSequences(session));
        if (sequences == null) {
            sequences = sequenceMap.get(sessionName);
        }
    }

    loadQueryCustomizers(session);

    DatabaseLogin login = session.getLogin();
    for (Sequence sequence : sequences) {
        login.addSequence(sequence);
    }

    handleDescriptorModifications(session);

}
 

import org.eclipse.persistence.sessions.DatabaseLogin; //导入依赖的package包/类
@Override
public void customize(Session session) throws Exception {
	 DatabaseLogin login = (DatabaseLogin)session.getDatasourceLogin();
	 login.setQueryRetryAttemptCount(0);
}
 

import org.eclipse.persistence.sessions.DatabaseLogin; //导入依赖的package包/类
@Override
public void customize(Session session) throws Exception {
    DatabaseLogin datasourceLogin = (DatabaseLogin) session.getDatasourceLogin();
    datasourceLogin.setQueryRetryAttemptCount(QUERY_RETRY_ATTEMPT_COUNT_ZERO_BASED_INDEX);
    datasourceLogin.setDelayBetweenConnectionAttempts(DELAY_BETWEEN_CONNECTION_ATTEMPTS_MILLIS);
}