Autocomplete operator to search string which contains special characters

MongoDB Atlas
,
5

Hi @Nikita_Prokopev and thank you for sharing the above query and sample documents.

Here is what I tried based on the sample document shared, the lucene.whitespace analyzer used in my example divides text into searchable terms wherever it finds a whitespace character. It leaves all terms in their original case. You may need to adjust your index accordingly & test thoroughly to verify if the following suits your use cases.

Here, is how my index definition looks like:

Index Definition:

{
  "analyzer": "lucene.whitespace",
  "searchAnalyzer": "lucene.whitespace",
  "mappings": {
    "dynamic": false,
    "fields": {
      "name": [
        {
          "analyzer": "lucene.whitespace",
          "type": "string"
        },
        {
          "analyzer": "lucene.whitespace",
          "type": "autocomplete"
        }
      ],
      "sku": [
        {
          "analyzer": "lucene.whitespace",
          "type": "string"
        },
        {
          "analyzer": "lucene.whitespace",
          "type": "autocomplete"
        }
      ]
    }
  }
}

And the following query returns the required documents:

[
  {
    '$search': {
      'index': 'default', 
      'compound': {
        'should': [
          {
            'autocomplete': {
              'query': '29 1’ 1/', 
              'path': 'name'
            }
          }, {
            'autocomplete': {
              'query': '29 1’ 1/', 
              'path': 'sku'
            }
          }
        ]
      }
    }
  }
]

Let us know if you have any further questions .

Best Regards
Aasawari