MemberInfoWithStatsMBean.java 文件源码

/**
 * Connects the Admin Agent in the DS
 * 
 * @return AdminDistributedSystem MBean ObjectName
 * @throws OperationsException
 *           if connection to the DS fails
 * @throws AdminException
 *           if connection to the DS fails
 */
private ObjectName connectToSystem() throws OperationsException, AdminException {
  ObjectName adminDsObjName = agent.connectToSystem();

  AdminDistributedSystem adminDS = agent.getDistributedSystem();
  if (adminDSJmx == null && adminDS instanceof AdminDistributedSystemJmxImpl) {//instanceof checks for null
    adminDSJmx      = (AdminDistributedSystemJmxImpl) adminDS;
    refreshInterval = adminDSJmx.getRefreshInterval();
    id              = adminDSJmx.getId();
    forwarder.registerNotificationListener(adminDSJmx.getObjectName());
  }

  return adminDsObjName;
}