如何使用jest对弹性搜索结果进行排序 [英] how to sort elasticsearch results using jest

问题描述

所以我使用 jest 来练习 elasticsearch 5.2：

so i'm using jest to practice elasticsearch 5.2 have this:

@Override
public List<Aptitude> findAllAptitudes() {
    SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
    searchSourceBuilder.query(QueryBuilders.matchAllQuery());

    Search search = new Search.Builder(searchSourceBuilder.toString()).addIndex(APTITUDE_INDEX_NAME).build();

    try {
        SearchResult result = JestClientUtils.getClient().execute(search);
        List<Hit<Aptitude, Void>> aptitudes = result.getHits(Aptitude.class);
        return aptitudes.stream().map(this::getAptitude).sorted(new Comparator<Aptitude>() {

            @Override
            public int compare(Aptitude o1, Aptitude o2) {
                return o1.getId().compareTo(o2.getId());
            }
        }).collect(Collectors.toList());
    } catch (IOException e) {
        e.printStackTrace();
        throw new RuntimeException(e);
    }
}

private Aptitude getAptitude(Hit<Aptitude, Void> hit) {
    return hit.source;
}

但是我想按ID顺序获取结果（ Long 来自aptitude），但不能很清楚如何。有人能指出我的方向正确吗？
提前感谢

but i want to get the results in order by ID (Long atribute from aptitude) but cant quite figure out how to. can somebody point me in the right direction? thanks in advance

推荐答案

您不需要使用Java对结果进行排序，您可以简单地询问ES为你做您可以添加下面的第三行并删除所有Java流代码。

You don't need to sort your results in Java, you can simply ask ES to do it for you. You can add the third line below and remove all your Java Stream code.

SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
searchSourceBuilder.query(QueryBuilders.matchAllQuery());
searchSourceBuilder.sort("id", SortOrder.ASC);

这篇关于如何使用jest对弹性搜索结果进行排序的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！