How to use Elasticsearch standard analyser without lower case

Question

Im trying to create an analyser in elasticsearch using the pre-sets of "standard" analyser but with one change - no lower casing of words.

Ive tried chaining the whitespace and standard analyser like so:

PUT /standard_uppercase
{
"settings": {
"analysis": {
  "analyzer": {
    "rebuilt_standard": {
      "tokenizer": "standard",
      "filter": [
        "standard",
        "whitespace"       
      ]
    }
  }
}
}
}

But this does not give the required results. Is there a way to overwrite only the lowercase part of an analyser but retail all the existing features of the standard analyser?

Thanks in advance.

score 2 · Accepted Answer · answered Sep 21 '18 at 13:23

According the documentation

Definition

The standard analyzer consists of:

Tokenizer
    Standard Tokenizer 
Token Filters
    Standard Token Filter
    Lower Case Token Filter
    Stop Token Filter (disabled by default)

So, you could achieve your purposes in that way:

PUT /standard_uppercase
{
  "settings": {
    "analysis": {
      "analyzer": {
        "rebuilt_standard": {
          "tokenizer": "standard",
          "filter": [
            "standard"   
          ]
        }
      }
    }
  }
}

How to use Elasticsearch standard analyser without lower case

1 Answers1