Question

我正在尝试使用同义词配置弹性搜索。

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"
                        }
                    }
                }

Mappings config：

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

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因为这是我将分析器设置为我的请求的唯一方法。所以，当我在做的时候：

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

它让我回头

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

这对我来说是完美的，但是当我打电话给这样的话时

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

我希望它应该返回相同的对象，但没有任何内容：[]

所以，我在queryStringQuery添加了星号：

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

运作良好，但现在

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

返回[]

那么，我如何配置弹性搜索，以便在我搜索video，vid，film和fil时返回相同的对象？

提前致谢！

Answer 1

嗯，我认为Elasticsearch不会将fil“翻译”为vid :-)。所以，我认为在索引和搜索时都需要edgeNGram s。

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"
    }
  }
}

Elasticsearch查询字符串查询不能与同义词分析器一起使用

1 个答案: