public RouteContext route(final ShardingRule shardingRule) {
         RouteContext result = new RouteContext();
         String dataSourceName = getRandomDataSourceName(shardingRule.getDataSourceNames());
         RouteMapper dataSourceMapper = new RouteMapper(dataSourceName, dataSourceName);
         if (shardingRule.isAllBroadcastTables(logicTables)) {
             List<RouteMapper> tableMappers = new ArrayList<>(logicTables.size());
             for (String each : logicTables) {
                 tableMappers.add(new RouteMapper(each, each));
             }
             result.getRouteUnits().add(new RouteUnit(dataSourceMapper, tableMappers));
         } else if (logicTables.isEmpty()) {
             result.getRouteUnits().add(new RouteUnit(dataSourceMapper, Collections.emptyList()));
         } else if (1 == logicTables.size()) {
             String logicTableName = logicTables.iterator().next();
             if (!shardingRule.findTableRule(logicTableName).isPresent()) {
                 result.getRouteUnits().add(new RouteUnit(dataSourceMapper, Collections.emptyList()));
                 return result;
             }
             DataNode dataNode = shardingRule.getDataNode(logicTableName);
             result.getRouteUnits().add(new RouteUnit(new RouteMapper(dataNode.getDataSourceName(), dataNode.getDataSourceName()),
                     Collections.singletonList(new RouteMapper(logicTableName, dataNode.getTableName()))));
         } else {
             routeWithMultipleTables(result, shardingRule);
         }
         return result;
     }

public DataNode getDataNode(final String logicTableName) {
    TableRule tableRule = getTableRule(logicTableName);
    return tableRule.getActualDataNodes().get(0);
}