带过滤器的函数分数elasticsearch

Question

我想要一个函数，它获取所有结果，并且仅在它们与过滤器匹配时才对它们进行排序。我已经尝试过这些查询，但没有结果。有人可以帮忙吗？

试用1：

{
           "query": {
                "function_score": {
                    "query": {
                        "filtered": {
                            "query": {
                                "match_all": {} 
                            },                        
                            "filter": {
                                "bool": {
                                    "must": [
                                        {
                                            "term": {
                                                "category_boats": "motor_boat"
                                            }
                                        }                                           
                                    ]
                                }
                            }
                        }
                    },
                    "functions": [

                    ],
                    "score_mode": "first"
                }
            }
        }

试用2：

{
           "query": {
                "function_score": {
                    "query": { 
                        "match_all": {}
                    },
                    "functions": [ 
                        {
                            "filter": { 
                                "term": { 
                                    "boat_type": "offshore_yacht" 
                                }
                            }, 
                            "weight": 1
                        },
                        {
                            "filter": { 
                                "term": { 
                                    "year_built": "2016" 
                                }
                            }, 
                            "weight": 1
                        },
                        {
                            "filter": { 
                                "term": { 
                                    "manufacturer": "MasterCraft" 
                                }
                            }, 
                            "weight": 2 
                        }
                    ],
                    "score_mode": "first"
                }
            }
        }

在最后一个代码中，我收到错误：没有注册名为 [weight] 的函数。] 那么过滤器的权重是否受支持？一些帮助？

Answer 1

在elasticsearch 1.4中添加了对权重的支持，之前它被称为boost_factor

例子：

{
  "query": {
    "function_score": {
      "query": {
        "match_all": {}
      },
      "functions": [
        {
          "filter": {
            "term": {
              "boat_type": "offshore_yacht"
            }
          },
          "boost_factor": 1
        },
        {
          "filter": {
            "term": {
              "year_built": "2016"
            }
          },
          "boost_factor": 1
        },
        {
          "filter": {
            "term": {
              "manufacturer": "MasterCraft"
            }
          },
          "boost_factor": 2
        }
      ],
      "score_mode": "first"
    }
  }
}