我正在播放属于某种类型且具有多个评级的电影 . 使用ElasticSearch，我想先在Genres上进行分面搜索，然后再进行评分 .
我在这里读到这个想法：http://www.elasticsearch.org/guide/reference/api/search/facets/
但我很困惑如何理解这个Curl查询的输出：
curl -X POST "http://localhost:9200/movies/_search?pretty=true" -d '
{
"query" : { "query_string" : {"query" : "T*"} },
"facets" : {
"categories" : { "terms" : {"field" : "categories"} }
}
}
'
{
"took" : 35,
"timed_out" : false,
"_shards" : {
"total" : 5,
"successful" : 5,
"failed" : 0
},
"hits" : {
"total" : 3,
"max_score" : 1.0,
"hits" : [ {
"_index" : "movies",
"_type" : "movie",
"_id" : "13",
"_score" : 1.0, "_source" : {"category_id":2,"created_at":"2013-05-03T16:40:21Z","description":null,"title":"Tiny Plastic Men","updated_at":"2013-05-03T16:40:21Z","user_id":null}
}, {
"_index" : "movies",
"_type" : "movie",
"_id" : "32",
"_score" : 1.0, "_source" : {"category_id":14,"created_at":"2013-05-03T16:55:02Z","description":null,"title":"The Extreme Truth","updated_at":"2013-05-03T16:55:02Z","user_id":null}
}, {
"_index" : "movies",
"_type" : "movie",
"_id" : "39",
"_score" : 1.0, "_source" : {"category_id":7,"created_at":"2013-05-03T16:55:02Z","description":null,"title":"A Time of Day","updated_at":"2013-05-03T16:55:02Z","user_id":null}
} ]
},
"facets" : {
"categories" : {
"_type" : "terms",
"missing" : 3,
"total" : 0,
"other" : 0,
"terms" : [ ]
}
}
我正在播放一些以'T'开头的电影，但另外我会期待来自流派/类别'惊悚片'的电影 .
因此，我可以从上面的JSON中读到什么？
2 回答
看起来您的方面与您应该使用的文档中的任何字段都不匹配：
那么你应该得到一个category_id列表和每个category_id中的文档数
方面已弃用 . 见https://www.elastic.co/guide/en/elasticsearch/reference/1.6/search-facets.html
更好的选择是使用聚合：https://www.elastic.co/guide/en/elasticsearch/reference/1.6/search-aggregations.html