java - Elasticsearch 查询字符串查询无法与同义词分析器一起使用

Question

我正在尝试使用同义词配置 Elasticsearch 。

这些是我的设置:

                "analysis": {
                    "analyzer": {
                        "category_synonym": {
                            "tokenizer": "whitespace",
                            "filter": [
                                "synonym_filter"
                            ]
                        }
                    },
                    "filter": {
                        "synonym_filter": {
                            "type": "synonym",
                            "synonyms_path": "synonyms.txt"
                        }
                    }
                }

映射配置:

        "category": {
            "properties": {
                "name": {
                    "type":"string",
                    "search_analyzer" : "category_synonym",
                    "index_analyzer" : "standard",
                    "fields": {
                        "raw": {
                            "type":  "string",
                            "index": "not_analyzed"
                        }
                    }
                }
            }
        }

以及我的同义词列表

film => video,
ooh => panels , poster,
commercial => advertisement,
print => magazine

我必须说我正在使用 Elasticsearch Java API。我正在使用 QueryBuilders.queryStringQuery ，因为这是我根据请求设置分析器的唯一方法。所以，当我制作时:

QueryBuilders.queryStringQuery("name:film").analyzer(analyzer)

它返回我

[
  {
    "id": 71,
    "name": "Pitch video",
    "description": "... ",
    "parent": null
  },
  {
    "id": 25,
    "name": "Video",
    "description": "... ",
    "parent": null
  }
]

这对我来说是完美的，但是当我调用这样的东西时

QueryBuilders.queryStringQuery("name:vid").analyzer(analyzer)

我希望它应该返回相同的对象，但什么也没有:[]

因此，我向 queryStringQuery 添加了星号:

QueryBuilders.queryStringQuery("name:vid*").analyzer(analyzer)

效果很好，但现在

QueryBuilders.queryStringQuery("name:film*").analyzer(analyzer)

返回我[]

那么，如何配置我的 Elasticsearch ，使其在搜索 video、vid、film 和 fil？

提前致谢!

Answer 1

嗯，我认为 Elasticsearch 不会知道将 fil“翻译”为 vid :-)。因此，我认为您在索引和搜索时都需要 edgeNGram。

PUT test
{
  "settings": {
    "analysis": {
      "analyzer": {
        "category_synonym": {
          "tokenizer": "whitespace",
          "filter": [
            "synonym_filter",
            "my_edgeNGram_filter"
          ]
        },
        "standard_edgeNGram": {
          "tokenizer": "standard",
          "filter": [
            "lowercase",
            "synonym_filter",
            "my_edgeNGram_filter"
          ]
        }
      },
      "filter": {
        "synonym_filter": {
          "type": "synonym",
          "synonyms_path": "synonyms.txt"
        },
        "my_edgeNGram_filter": {
          "type": "edgeNGram",
          "min_gram": 2,
          "max_gram": 8
        }
      }
    }
  },
  "mappings": {
    "test": {
      "properties": {
        "name": {
          "type": "string",
          "analyzer": "category_synonym",
          "index_analyzer": "standard_edgeNGram",
          "fields": {
            "raw": {
              "type": "string",
              "index": "not_analyzed"
            }
          }
        }
      }
    }
  }
}

POST test/test/1
{"name": "Pitch video"}
POST test/test/2
{"name": "Video"}

GET /test/test/_search
{
  "query": {
    "query_string": {
      "query": "name:fil"
    }
  }
}