elasticsearch/docs/reference/text-analysis/analysis-keyword-analyzer.md

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Keyword analyzer [analysis-keyword-analyzer]

The keyword analyzer is a noop analyzer which returns the entire input string as a single token.

Example output [_example_output_2]

POST _analyze
{
  "analyzer": "keyword",
  "text": "The 2 QUICK Brown-Foxes jumped over the lazy dog's bone."
}

The above sentence would produce the following single term:

[ The 2 QUICK Brown-Foxes jumped over the lazy dog's bone. ]

Configuration [_configuration_3]

The keyword analyzer is not configurable.

Definition [_definition_2]

The keyword analyzer consists of:

Tokenizer

• Keyword Tokenizer

If you need to customize the keyword analyzer then you need to recreate it as a custom analyzer and modify it, usually by adding token filters. Usually, you should prefer the Keyword type when you want strings that are not split into tokens, but just in case you need it, this would recreate the built-in keyword analyzer and you can use it as a starting point for further customization:

PUT /keyword_example
{
  "settings": {
    "analysis": {
      "analyzer": {
        "rebuilt_keyword": {
          "tokenizer": "keyword",
          "filter": [         <1>
          ]
        }
      }
    }
  }
}

1. You’d add any token filters here.