ES6.X，父子孙三级查询
以下代码根据本地localhost举例，需要将localhost替换成自己的ip
一、创建映射关系
http://localhost:9200/test_join
{
"mappings": {
"_doc": {
"properties": {
"info": {
"type": "join",
"relations": {
"classes": "teacher",
"teacher":"user"
}
}
}
}
}
}以上映射将classes设置为teacher的父文档，将teacher设置为user的父文档，同理user就是classes的孙文档
二、插入数据
1、插入classes数据
http://localhost:9200/test_join/_doc/c1?routing=1&refresh
{
"classesName": "电信一班",
"info": {
"name": "classes"
}
}2、插入teacher数据
http://localhost:9200/test_join/_doc/t1?routing=1&refresh
{
"teacherName": "刘备",
"info": {
"name": "teacher",
"parent": "c1"
}
}3、插入user数据
http://localhost:9200/test_join/_doc/u1?routing=1&refresh
{
"userName": "刘灿",
"info": {
"name": "user",
"parent":"t1"
}
}三、构建查询
1、根据classes的子文档teacher和teacher的子文档user查询classes文档的数据，并带上teacher和user的数据
http://localhost:9200/test_join/_search
{
"query": {
"has_child":{
"type":"teacher",
"query":{
"bool":{
"must":[{
"has_child":{
"type":"user",
"query":{
"match":{
"userName":"刘灿"
}
},"inner_hits":{}
}
},{
"match":{
"teacherName": "刘备"
}
}
]
}
},"inner_hits":{}
}
}
}返回结果：
{
"took": 1,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 1,
"max_score": 1,
"hits": [
{
"_index": "test_join",
"_type": "_doc",
"_id": "c1",
"_score": 1,
"_routing": "1",
"_source": {
"classesName": "电信一班",
"info": {
"name": "classes"
}
},
"inner_hits": {
"teacher": {
"hits": {
"total": 1,
"max_score": 1.287682,
"hits": [
{
"_index": "test_join",
"_type": "_doc",
"_id": "t1",
"_score": 1.287682,
"_routing": "1",
"_source": {
"teacherName": "刘备",
"info": {
"name": "teacher",
"parent": "c1"
}
},
"inner_hits": {
"user": {
"hits": {
"total": 1,
"max_score": 0.2876821,
"hits": [
{
"_index": "test_join",
"_type": "_doc",
"_id": "u1",
"_score": 0.2876821,
"_routing": "1",
"_source": {
"userName": "刘灿",
"info": {
"name": "user",
"parent": "t1"
}
}
}
]
}
}
}
}
]
}
}
}
}
]
}
}2、根据孙文档user的父文档teacher和teacher的父文档classes查询孙文档user
http://localhost:9200/test_join/_search
{
"query": {
"has_parent":{
"parent_type":"teacher",
"query":{
"bool":{
"must":[{
"has_parent":{
"parent_type":"classes",
"query":{
"match":{
"classesName.keyword":"电信一班"
}
},"inner_hits":{}
}
},{
"match":{
"teacherName.keyword": "刘备"
}
}
]
}
},"inner_hits":{}
}
}
}返回结果：
{
"took": 1,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 1,
"max_score": 1,
"hits": [
{
"_index": "test_join",
"_type": "_doc",
"_id": "u1",
"_score": 1,
"_routing": "1",
"_source": {
"userName": "刘灿",
"info": {
"name": "user",
"parent": "t1"
}
},
"inner_hits": {
"teacher": {
"hits": {
"total": 1,
"max_score": 1.287682,
"hits": [
{
"_index": "test_join",
"_type": "_doc",
"_id": "t1",
"_score": 1.287682,
"_routing": "1",
"_source": {
"teacherName": "刘备",
"info": {
"name": "teacher",
"parent": "c1"
}
},
"inner_hits": {
"classes": {
"hits": {
"total": 1,
"max_score": 0.2876821,
"hits": [
{
"_index": "test_join",
"_type": "_doc",
"_id": "c1",
"_score": 0.2876821,
"_routing": "1",
"_source": {
"classesName": "电信一班",
"info": {
"name": "classes"
}
}
}
]
}
}
}
}
]
}
}
}
}
]
}
}3、根据teacher的父文档classes和teacher的子文档user查询teacher文档，并带出对应数据
http://localhost:9200/test_join/_search
{
"query": {
"has_parent":{
"parent_type":"classes",
"query":{
"bool":{
"must":[{
"has_child":{
"type":"teacher",
"query":{
"bool":{
"must":[
{
"has_child":{
"type":"user",
"query":{
"match":{
"userName.keyword":"刘灿"
}
},"inner_hits":{}
}
}
]
}
},"inner_hits":{}
}
},
{
"match_all":{
}
}
]
}
},"inner_hits":{}
}
}
}返回结果：
{
"took": 1,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 1,
"max_score": 1,
"hits": [
{
"_index": "test_join",
"_type": "_doc",
"_id": "t1",
"_score": 1,
"_routing": "1",
"_source": {
"teacherName": "刘备",
"info": {
"name": "teacher",
"parent": "c1"
}
},
"inner_hits": {
"classes": {
"hits": {
"total": 1,
"max_score": 2,
"hits": [
{
"_index": "test_join",
"_type": "_doc",
"_id": "c1",
"_score": 2,
"_routing": "1",
"_source": {
"classesName": "电信一班",
"info": {
"name": "classes"
}
},
"inner_hits": {
"teacher": {
"hits": {
"total": 1,
"max_score": 1,
"hits": [
{
"_index": "test_join",
"_type": "_doc",
"_id": "t1",
"_score": 1,
"_routing": "1",
"_source": {
"teacherName": "刘备",
"info": {
"name": "teacher",
"parent": "c1"
}
},
"inner_hits": {
"user": {
"hits": {
"total": 1,
"max_score": 0.2876821,
"hits": [
{
"_index": "test_join",
"_type": "_doc",
"_id": "u1",
"_score": 0.2876821,
"_routing": "1",
"_source": {
"userName": "刘灿",
"info": {
"name": "user",
"parent": "t1"
}
}
}
]
}
}
}
}
]
}
}
}
}
]
}
}
}
}
]
}
}