/** {@inheritDoc} */
  public ConfigChangeResult applyConfigurationChange(LocalDBBackendCfg newCfg) {
    ConfigChangeResult ccr;
    ResultCode resultCode = ResultCode.SUCCESS;
    ArrayList<Message> messages = new ArrayList<Message>();

    try {
      if (rootContainer != null) {
        DN[] newBaseDNs = new DN[newCfg.getBaseDN().size()];
        newBaseDNs = newCfg.getBaseDN().toArray(newBaseDNs);

        // Check for changes to the base DNs.
        for (DN baseDN : cfg.getBaseDN()) {
          boolean found = false;
          for (DN dn : newBaseDNs) {
            if (dn.equals(baseDN)) {
              found = true;
            }
          }
          if (!found) {
            // The base DN was deleted.
            DirectoryServer.deregisterBaseDN(baseDN);
            EntryContainer ec = rootContainer.unregisterEntryContainer(baseDN);
            ec.close();
            ec.delete();
          }
        }

        for (DN baseDN : newBaseDNs) {
          if (!rootContainer.getBaseDNs().contains(baseDN)) {
            try {
              // The base DN was added.
              EntryContainer ec = rootContainer.openEntryContainer(baseDN, null);
              rootContainer.registerEntryContainer(baseDN, ec);
              DirectoryServer.registerBaseDN(baseDN, this, false);
            } catch (Exception e) {
              if (debugEnabled()) {
                TRACER.debugCaught(DebugLogLevel.ERROR, e);
              }

              resultCode = DirectoryServer.getServerErrorResultCode();

              messages.add(
                  ERR_BACKEND_CANNOT_REGISTER_BASEDN.get(
                      String.valueOf(baseDN), String.valueOf(e)));
              ccr = new ConfigChangeResult(resultCode, false, messages);
              return ccr;
            }
          }
        }

        baseDNs = newBaseDNs;
      }

      if (cfg.getDiskFullThreshold() != newCfg.getDiskFullThreshold()
          || cfg.getDiskLowThreshold() != newCfg.getDiskLowThreshold()) {
        diskMonitor.setFullThreshold(newCfg.getDiskFullThreshold());
        diskMonitor.setLowThreshold(newCfg.getDiskLowThreshold());
      }

      // Put the new configuration in place.
      this.cfg = newCfg;
    } catch (Exception e) {
      messages.add(Message.raw(stackTraceToSingleLineString(e)));
      ccr = new ConfigChangeResult(DirectoryServer.getServerErrorResultCode(), false, messages);
      return ccr;
    }

    ccr = new ConfigChangeResult(resultCode, false, messages);
    return ccr;
  }