Elasticsearch高级Java客户端版本6.0.1实现基于脚本的排序

Question

我使用的是ES版本6.0.1，并在我的应用程序中集成了版本为6.0.1的Java高级rest客户端。

我目前正在尝试使用弹性搜索的JavaHigh Level Rest客户端API构建这个基于脚本的排序查询：

{
  "sort": {
    "_script": {
      "type": "number",
      "script": {
        "lang": "painless",
        "params": {
          "ids": [3, 2, 1570]
        },
        "source": """
          int idsCount = params.ids.size();
          int id = (int)doc['id'].value;
          int foundIdx = params.ids.indexOf(id);
          return foundIdx > -1 ? foundIdx: idsCount + 1;
        """
      }
    }
  }
}

但我找不到任何关于java客户端基于脚本的排序查询的文档。如果有人能帮助我使用java API实现上述查询，我将不胜感激。

Answer 1

我不确定ES版本6.0.1。我正在使用ES 7.9.0版

这对我有用。

Map<String, List<int>> params = new HashMap<String, List<int>>();
List<int> list = Arrays.asList(3, 2, 1570);
params.put("ids", list);

SearchRequest searchRequest = new SearchRequest(index);
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder()
            .size(size)
            .from(from);

Script inlineScript = new Script(ScriptType.INLINE, "painless", "int idsCount = params.ids.size();
                                                                 int id = (int)doc['id'].value;
                                                                 int foundIdx = params.ids.indexOf(id);
                                                                 return foundIdx > -1 ? foundIdx: idsCount + 1;", params);
                
ScriptSortBuilder ssb = new ScriptSortBuilder(inlineScript, ScriptSortType.NUMBER).order(SortOrder.ASC);
searchSourceBuilder.sort(ssb);
searchRequest.source(searchSourceBuilder);
searchResponse = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);
SearchHits hits = searchResponse.getHits();