kustomize/api/internal/crawl/search_cmds/fieldExistence.md

Count the documents whose document field is empty (The reason why the document field of a document is empty is because of empty documents):

curl -s -X GET "${ElasticSearchURL}:9200/${INDEXNAME}/_search?pretty" -H 'Content-Type: application/json' -d'
{
   "size": 10000,
    "query": {
        "bool": {
            "must_not": {
                "exists": {
                    "field": "document"
                }
            }
        }
    }
}
'

Find all the documents having the creationTime field set:

curl -s -X GET "${ElasticSearchURL}:9200/${INDEXNAME}/_search?pretty" -H 'Content-Type: application/json' -d'
{
    "query": {
        "exists": {
            "field": "creationTime"
        }
    }
}
'

Find all the documents whose creationTime field is not set:

curl -s -X GET "${ElasticSearchURL}:9200/${INDEXNAME}/_search?pretty" -H 'Content-Type: application/json' -d'
{
   "size": 10000,
    "query": {
        "bool": {
            "must_not": {
                "exists": {
                    "field": "creationTime"
                }
            }
        }
    }
}
'

The following fields of a document in the kustomize index are always non-empty: repositoryUrl, filePath, defaultBranch.

The following fields of a document in the kustomize index may be empty: kinds, identifiers, values.