@Override
  public WMDropMappingResponse drop_wm_mapping(WMDropMappingRequest request)
      throws NoSuchObjectException, InvalidOperationException, MetaException, TException {
    try {
      getMS().dropWMMapping(request.getMapping());
      return new WMDropMappingResponse();
    } catch (MetaException e) {
      LOG.error("Exception while trying to drop WMMapping", e);
      throw e;
    }
  }
Api to fetch all table constraints at once.
@param request it consist of catalog name, database name and table name to identify the table in metastore
@return all constraints attached to given table
@throws TException
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/HMSHandler.java