TreeMap<Long, List<Record>> records = new TreeMap<Long, List<Record>>();
result.setRecords(records);
for (int i = 0; i < dataSources.length; i++) {
DataSource ds = dataSourceFactory.getDataSource(dataSources[i]);
ds.search(result, cluster, dataSources[i], t0, t1, filter, token);
}
return result;
}