弹性搜索在功能核心功能中支持滤镜 [英] elasticsearch nest support of filters in functionscore function

问题描述

我正在尝试在NEST中实现一个function_score查询，功能仅在过滤器匹配时才应用。

I am currently trying to implement a "function_score" query in NEST, with functions that are only applied when a filter matches.

它看起来不像FunctionScoreFunctionsDescriptor还支持添加过滤器。这个功能是否会在任何时候添加？

It doesn't look like FunctionScoreFunctionsDescriptor supports adding a filter yet. Is this functionality going to be added any time soon?

以下是我想要实现的一个超级基本示例：

Here's a super basic example of what I'd like to be able to implement:

1. 运行基本分数的ES查询


2. 查看功能列表，并将其添加到筛选器的第一个分数匹配

"function_score": {
    "query": {...},  // base ES query
    "functions": [
        {
            "filter": {...},
            "script_score": {"script": "25"}
        },
        {
            "filter": {...},
            "script_score": {"script": "15"}
        }      
    ],
    "score_mode": "first",  // take the first script_score where the filter matches
    "boost_mode": "sum"  // and add this to the base ES query score
}

谢谢！

推荐答案

已经实现：

_client.Search<ElasticsearchProject>(s => 
            s.Query(q=>q
                .FunctionScore(fs=>fs.Functions(
                    f=>f
                        .ScriptScore(ss=>ss.Script("25"))
                        .Filter(ff=>ff.Term(t=>t.Country, "A")),
                    f=> f
                        .ScriptScore(ss=>ss.Script("15"))
                        .Filter(ff=>ff.Term("a","b")))
                .ScoreMode(FunctionScoreMode.first)
                .BoostMode(FunctionBoostMode.sum))));

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