{
  "fess_log.favorite_log" : {
    "aliases" : { },
    "mappings" : {
      "favorite_log" : {
        "properties" : {
          "createdAt" : {
            "type" : "date",
            "format" : "date_optional_time"
          },
          "docId" : {
            "type" : "keyword"
          },
          "queryId" : {
            "type" : "keyword"
          },
          "url" : {
            "type" : "keyword"
          },