Query Filter

Wraps any query to be used as a filter. Can be placed within queries that accept a filter.

{
    "constantScore" : {
        "filter" : {
            "query" : {
                "query_string" : {
                    "query" : "this AND that OR thus"
                }
            }
        }
    }
}

Caching

The result of the filter is not cached by default. The _cache can be set to true to cache the result of the filter. This is handy when the same query is used on several (many) other queries. Note, the process of caching the first execution is higher when not caching (since it needs to satisfy different queries).

Setting the _cache element requires a different format for the query:

{
    "constantScore" : {
        "filter" : {
            "fquery" : {
                "query" : {
                    "query_string" : {
                        "query" : "this AND that OR thus"
                    }
                },
                "_cache" : true
            }
        }
    }
}