High Rest Client | Search for any value from list

[AsfK]

I have a simple index contains filename and status and I want to get all documents contains any filename from a given list.

Below is a document sample:

{
    "_index" : "filestracking",
    "_type" : "_doc",
    "_id" : "File_2020_05_22_001.csv",
    "_score" : 1.0,
    "_source" : {
       "fileName" : "File_2020_05_22_001.csv",
       "status" : "EXPECTED"
    }
}

I wrote a simple query to receive all documents that their fileName match a value from a list:

SearchRequest searchRequest = new SearchRequest(trackingIndex);
QueryBuilder query = QueryBuilders.termsQuery("fileName", fileList);
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
searchSourceBuilder.query(query);
searchRequest.source(searchSourceBuilder);
SearchResponse searchResponse = getSearchResponseWithAttempts(searchRequest);
searchResponse.getHits().getHits();

but I find nothing (fileList is a List).

Can you help me please, how to find all documents match any value of a given list (fileList) ?

Thank you!

EDIT
_id and fileName contains same values. searching for _id return results (fileName is of text type in the mapping).
I don't know why _id works but if you know I'll be glad to know too

[dadoonet (David Pilato)]

@AsfK

fileName is of text type in the mapping

Change it to keyword or use the keyword analyzer on this field.

If you are using the default mapping, you can may be run the query against fileName.keyword.