3

Assuming I have an Index & I added to it a document, by this statement:

POST /temp/item
{
    "text": "[email protected] [email protected] one,two three:four"
}

I would like some query statements to return this document, for example:

  1. *@domain*
  2. *@do-*
  3. one,two
  4. three:four --> This actually yield an error

Each selected by a statement similar to this:

GET /temp/item/_search
{
 "query": {
    "bool": {
      "must": [
        {
          "query_string": {
            "query": "*@domain*",
            "allow_leading_wildcard": "true",
            "default_operator": "AND"
          }
        }
      ]
    }
  }
}

None of them returned.

I understood the reason was that the Analyzer set to standard, it splitted the text by any wordboundry. So I figured that I must change the analyzer to whitespace, like this:

PUT /temp
{
  "mappings": {
    "item" : {
      "properties" : {
        "text" : {
          "type" :    "string",
          "analyzer": "whitespace"
        }
      }
    }
  }
}

Doing so didn't solve the problem. None of the statement returned the document.

Questions

  1. How can I configure the Index or Change the query statement so that all of the examples above will capture.
  2. Why after I changed the analyzer to "whitespace" Elasticsearch didn't return the document?
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1 Answer 1

Reset to default
4

Almost there you need to explicitly specify the 'field' for query_string to match against. One can specify using the default_field or fields option the case

Example:

{
 "query": {
    "bool": {
      "must": [
        {
          "query_string": {
            "query": "*@domain*",
            "fields": [
               "text"
            ], 
            "allow_leading_wildcard": "true",
            "default_operator": "AND"
          }
        }
      ]
    }
  }
}

If nothing is specified query_string would use the _all field.

2) three:four needs to be wrapped in double-quotes else it would be interpreted as field:three match query:four Example:

{
 "query": {
    "bool": {
      "must": [
        {
          "query_string": {
            "query": "\"three:four\"",
            "fields": [
               "text"
            ], 
            "allow_leading_wildcard": "true",
            "default_operator": "AND"
          }
        }
      ]
    }
  }
}
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