如何在Elasticsearch中触发单个查询，以获取以下按月到日期的用户计数

import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.aggregations.AggregationBuilders;
import org.elasticsearch.search.aggregations.bucket.histogram.DateHistogramInterval;
import org.elasticsearch.search.aggregations.bucket.histogram.Histogram;
import org.elasticsearch.search.aggregations.metrics.valuecount.ValueCount;
import org.elasticsearch.search.builder.SearchSourceBuilder;

import java.io.IOException;

public class ElasticsearchQuery {
    private static final String INDEX_NAME = "your_index_name";
    private static final String DATE_FIELD = "your_date_field";

    public static void main(String[] args) {
        // 创建Elasticsearch客户端
        RestHighLevelClient client = createClient();

        // 构建查询请求
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        sourceBuilder.query(QueryBuilders.matchAllQuery());

        // 添加Date Histogram聚合
        sourceBuilder.aggregation(
                AggregationBuilders.dateHistogram("monthly")
                        .field(DATE_FIELD)
                        .calendarInterval(DateHistogramInterval.MONTH)
                        .subAggregation(
                                AggregationBuilders.dateHistogram("daily")
                                        .field(DATE_FIELD)
                                        .calendarInterval(DateHistogramInterval.DAY)
                        )
        );

        // 设置查询超时时间和大小
        sourceBuilder.timeout(TimeValue.timeValueSeconds(10));
        sourceBuilder.size(0);

        // 创建查询请求
        SearchRequest searchRequest = new SearchRequest(INDEX_NAME);
        searchRequest.source(sourceBuilder);

        try {
            // 执行查询
            SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);

            // 处理聚合结果
            Histogram monthlyHistogram = searchResponse.getAggregations().get("monthly");
            for (Histogram.Bucket monthlyBucket : monthlyHistogram.getBuckets()) {
                System.out.println("Month: " + monthlyBucket.getKeyAsString());
                ValueCount dailyCount = monthlyBucket.getAggregations().get("daily");
                System.out.println("User Count: " + dailyCount.getValue());
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            // 关闭Elasticsearch客户端
            closeClient(client);
        }
    }

    private static RestHighLevelClient createClient() {
        // 创建并返回RestHighLevelClient
    }

    private static void closeClient(RestHighLevelClient client) {
        // 关闭RestHighLevelClient
    }
}