Elastic search case insensitive

Question

I have the following annotation based elastic search configuration, I've set the index not to be analyzed because I don't want these fields to be tokenized:

    @Document(indexName = "abc", type = "efg")
    public class ResourceElasticSearch {
    @Id
    private String id;
    @Field(type = FieldType.String, index = FieldIndex.not_analyzed)
    private String name;
    @Field(type = FieldType.String, store = true)
    private List<String> tags = new ArrayList<>();
    @Field(type = FieldType.String)
    private String clientId;
    @Field(type = FieldType.String, index = FieldIndex.not_analyzed)
    private String virtualPath;
    @Field(type = FieldType.Date)
    private Date lastModifiedTime;
    @Field(type = FieldType.Date)
    private Date lastQueryTime;
    @Field(type = FieldType.String)
    private String modificationId;
    @Field(type = FieldType.String)
    private String realPath;
    @Field(type = FieldType.String)
    private String extension;
    @Field(type = FieldType.String)
    private ResourceType type;

Is it possible by using annotations to make the searches on the name, virtualPath and tags to be case-insensitive? The search looks like this, search by wildcard is required:

private QueryBuilder getQueryBuilderForSearch(SearchCriteria criteria) {
    String virtualPath = criteria.getPath();

    return boolQuery()
            .must(wildcardQuery("virtualPath", virtualPath))
            .must(wildcardQuery("name", criteria.getName()));
}

Answer 1

Not really possible what you want to do and it's not about Spring Data configuration, it's about Elasticsearch itself: you indexed data as not_analyzed and it will stay that way.

Also, if you wanted case insensitive data I suggest indexing with keyword analyzer combined with a lowercase token filter.