Elasticsearch Map case insensitive to not_analyzed documents

Question

I have a type with following mapping

PUT /testindex
{
    \"mappings\" : {
        \"products\" : {
            \"properties\" : {
                \"category         


        

Answer 1

To this scenarios, I suggest that you could combine lowercase filter and keyword tokenizer into your custom analyzer. And lowercase your search-input keywords.

1.Create index with the analyzer combined with lowercase filter and keyword tokenizer

curl -XPUT localhost:9200/test/ -d '
{
  "settings":{
     "index":{
        "analysis":{
           "analyzer":{
              "your_custom_analyzer":{
                 "tokenizer":"keyword",
                 "filter": ["lowercase"]
              }
           }
        }
    }
}'

2.Put mappings and set the field properties with the analyzer

curl -XPUT localhost:9200/test/_mappings/twitter -d '
{
    "twitter": {
        "properties": {
            "content": {"type": "string", "analyzer": "your_custom_analyzer" }
        }
    }
}'

3.You could search what you want in wildcard query.

curl -XPOST localhost:9200/test/twitter/ -d '{

    "query": {
        "wildcard": {"content": "**the words you want to search**"}
    }  
}'

Another way for search a filed in different way. I offser a suggestion for U was that using the multi_fields type.

You could set the field in multi_field

curl -XPUT localhost:9200/test/_mapping/twitter -d '
{
    "properties": {
        "content": {
            "type": "multi_field",
            "fields": {
                "default": {"type": "string"},
                "search": {"type": "string", "analyzer": "your_custom_analyzer"}
            }
        }
    }
}'

So you could index data with above mappings properties. and finally search it in two way (default/your_custom_analyzer)