/**
   * Delete a repository connection.
   *
   * @param name is the name of the connection to delete. If the name does not exist, no error is
   *     returned.
   */
  public void delete(String name) throws ManifoldCFException {
    // Grab a job manager handle.  We will need to check if any jobs refer to this connection.
    IJobManager jobManager = JobManagerFactory.make(threadContext);

    StringSetBuffer ssb = new StringSetBuffer();
    ssb.add(getRepositoryConnectionsKey());
    ssb.add(getRepositoryConnectionKey(name));
    StringSet cacheKeys = new StringSet(ssb);
    ICacheHandle ch = cacheManager.enterCache(null, cacheKeys, getTransactionID());
    try {
      beginTransaction();
      try {
        // Check if any jobs refer to this connection name
        if (jobManager.checkIfReference(name))
          throw new ManifoldCFException(
              "Can't delete repository connection '" + name + "': existing jobs refer to it");
        ManifoldCF.noteConfigurationChange();
        throttleSpecManager.deleteRows(name);
        historyManager.deleteOwner(name);
        ArrayList params = new ArrayList();
        String query =
            buildConjunctionClause(
                params, new ClauseDescription[] {new UnitaryClause(nameField, name)});
        performDelete("WHERE " + query, params, null);
        cacheManager.invalidateKeys(ch);
      } catch (ManifoldCFException e) {
        signalRollback();
        throw e;
      } catch (Error e) {
        signalRollback();
        throw e;
      } finally {
        endTransaction();
      }
    } finally {
      cacheManager.leaveCache(ch);
    }
  }
 /**
  * Delete history rows related to a specific connection, upon user request.
  *
  * @param connectionName is the connection whose history records should be removed.
  */
 @Override
 public void cleanUpHistoryData(String connectionName) throws ManifoldCFException {
   historyManager.deleteOwner(connectionName);
 }