文档的父子关系
DSL
DELETE my_blogs
# 设定 Parent/Child Mapping
PUT my_blogs
{
"settings": {
"number_of_shards": 2
},
"mappings": {
"properties": {
"blog_comments_relation": {
"type": "join",
"relations": {
"blog": "comment"
}
},
"content": {
"type": "text"
},
"title": {
"type": "keyword"
}
}
}
}
#索引父文档
PUT my_blogs/_doc/blog1
{
"title":"Learning Elasticsearch",
"content":"learning ELK @ geektime",
"blog_comments_relation":{
"name":"blog"
}
}
#索引父文档
PUT my_blogs/_doc/blog2
{
"title":"Learning Hadoop",
"content":"learning Hadoop",
"blog_comments_relation":{
"name":"blog"
}
}
#索引子文档
PUT my_blogs/_doc/comment1?routing=blog1
{
"comment":"I am learning ELK",
"username":"Jack",
"blog_comments_relation":{
"name":"comment",
"parent":"blog1"
}
}
#索引子文档
PUT my_blogs/_doc/comment2?routing=blog2
{
"comment":"I like Hadoop!!!!!",
"username":"Jack",
"blog_comments_relation":{
"name":"comment",
"parent":"blog2"
}
}
#索引子文档
PUT my_blogs/_doc/comment3?routing=blog2
{
"comment":"Hello Hadoop",
"username":"Bob",
"blog_comments_relation":{
"name":"comment",
"parent":"blog2"
}
}
# 查询所有文档
POST my_blogs/_search
{
}
#根据父文档ID查看
GET my_blogs/_doc/blog2
# Parent Id 查询
POST my_blogs/_search
{
"query": {
"parent_id": {
"type": "comment",
"id": "blog2"
}
}
}
# Has Child 查询,返回父文档
POST my_blogs/_search
{
"query": {
"has_child": {
"type": "comment",
"query" : {
"match": {
"username" : "Jack"
}
}
}
}
}
# Has Parent 查询，返回相关的子文档
POST my_blogs/_search
{
"query": {
"has_parent": {
"parent_type": "blog",
"query" : {
"match": {
"title" : "Learning Hadoop"
}
}
}
}
}
#通过ID ，访问子文档
GET my_blogs/_doc/comment3
#通过ID和routing ，访问子文档
GET my_blogs/_doc/comment3?routing=blog2
#更新子文档
PUT my_blogs/_doc/comment3?routing=blog2
{
"comment": "Hello Hadoop??",
"blog_comments_relation": {
"name": "comment",
"parent": "blog2"
}
}
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