父子关系，祖孙三层关系的数据建模，搜索
PUT /company { "mappings": { "country": {}, "rd_center": { "_parent": { "type": "country" } }, "employee": { "_parent": { "type": "rd_center" } } } } country -> rd_center -> employee，祖孙三层数据模型 POST /company/country/_bulk { "index": { "_id": "1" }} { "name": "中国" } { "index": { "_id": "2" }} { "name": "美国" } POST /company/rd_center/_bulk { "index": { "_id": "1", "parent": "1" }} { "name": "北京研发总部" } { "index": { "_id": "2", "parent": "1" }} { "name": "上海研发中心" } { "index": { "_id": "3", "parent": "2" }} { "name": "硅谷人工智能实验室" } PUT /company/employee/1?parent=1&routing=1 { "name": "张三", "dob": "1970-10-24", "hobby": "爬山" }
routing参数的讲解，必须跟grandparent相同，否则有问题
country，用的是自己的id去路由; rd_center，parent，用的是country的id去路由; employee，如果也是仅仅指定一个parent，那么用的是rd_center的id去路由，这就导致祖孙三层数据不会在一个shard上
孙子辈儿，要手动指定routing，指定为爷爷辈儿的数据的id
搜索有爬山爱好的员工所在的国家
GET /company/country/_search { "query": { "has_child": { "type": "rd_center", "query": { "has_child": { "type": "employee", "query": { "match": { "hobby": "爬山" } } } } } } } { "took": 10, "timed_out": false, "_shards": { "total": 5, "successful": 5, "failed": 0 }, "hits": { "total": 1, "max_score": 1, "hits": [ { "_index": "company", "_type": "country", "_id": "1", "_score": 1, "_source": { "name": "中国" } } ] } }
