How to use

usesServerTime

method

in

org.eclipse.persistence.descriptors.TimestampLockingPolicy

/**
 * INTERNAL:
 * returns the initial locking value
 */
protected Object getInitialWriteValue(AbstractSession session) {
  if (usesLocalTime()) {
    return new Timestamp(System.currentTimeMillis());
  }
  if (usesServerTime()) {
    AbstractSession readSession = session.getSessionForClass(getDescriptor().getJavaClass());
    while (readSession.isUnitOfWork()) {
      readSession = ((UnitOfWorkImpl)readSession).getParent().getSessionForClass(getDescriptor().getJavaClass());
    }
    return readSession.getDatasourceLogin().getDatasourcePlatform().getTimestampFromServer(session, readSession.getName());
  }
  return null;
}

/**
 * INTERNAL:
 * returns the initial locking value
 */
protected Object getInitialWriteValue(AbstractSession session) {
  if (usesLocalTime()) {
    return new Timestamp(System.currentTimeMillis());
  }
  if (usesServerTime()) {
    AbstractSession readSession = session.getSessionForClass(getDescriptor().getJavaClass());
    while (readSession.isUnitOfWork()) {
      readSession = ((UnitOfWorkImpl)readSession).getParent().getSessionForClass(getDescriptor().getJavaClass());
    }
    return readSession.getDatasourceLogin().getDatasourcePlatform().getTimestampFromServer(session, readSession.getName());
  }
  return null;
}

/**
 * INTERNAL:
 * returns the initial locking value
 */
protected Object getInitialWriteValue(AbstractSession session) {
  if (usesLocalTime()) {
    return new Timestamp(System.currentTimeMillis());
  }
  if (usesServerTime()) {
    AbstractSession readSession = session.getSessionForClass(getDescriptor().getJavaClass());
    while (readSession.isUnitOfWork()) {
      readSession = ((UnitOfWorkImpl)readSession).getParent().getSessionForClass(getDescriptor().getJavaClass());
    }
    return readSession.getDatasourceLogin().getDatasourcePlatform().getTimestampFromServer(session, readSession.getName());
  }
  return null;
}