F21*_*F21 20 parent-child elasticsearch
我正在阅读有关elasticsearch的文档,本[页面] [1]讨论了如何使用子类映射子类型_parent.
如果我有被称为email父母的孩子叫做account:
每种类型的字段:
account (http://localhost:9200/myapp/account/1)
========
id
name
some_other_info
state
email (http://localhost:9200/myapp/email/1?parent=1)
========
id
email
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如何搜索的name领域account和email领域email提供的是state的account是active?
有没有办法让父母拥有的所有孩子(某种类型或任何类型)?
索引子文档时,是否可以将父对象作为对象属性传递给JSON数据,而不是作为查询字符串的一部分?
在尝试了imotov的建议之后,我提出了这个问题:
这是执行 http://localhost:9200/myapp/account/_search
{
"query": {
"bool": {
"must": [
{
"prefix": {
"name": "a"
}
},
{
"term": {
"statuses": "active"
}
}
],
"should": [
{
"has_child": {
"type": "emailaddress",
"query": {
"prefix": {
"email": "a"
}
}
}
}
]
}
}
}
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问题是上面没有给我任何电子邮件匹配的帐户.
我想要的效果基本上是这样的:
account该emailaddress类型或任何类型的名称检查用户的查询.accounts匹配,只需返回它们.如果emailaddress匹配,则返回其父帐户.所以,我基本上需要能够OR在两种类型之间进行搜索并返回父类型的匹配.
测试数据:
curl -XPUT http://localhost:9200/test/account/1 -d '{
"name": "John Smith",
"statuses": "active"
}'
curl -XPUT http://localhost:9200/test/account/2 -d '{
"name": "Peter Smith",
"statuses": "active"
}'
curl -XPUT http://localhost:9200/test/account/3 -d '{
"name": "Andy Smith",
"statuses": "active"
}'
//Set up mapping for parent/child relationship
curl -XPUT 'http://localhost:9200/test/email/_mapping' -d '{
"emails" : {
"_parent" : {"type" : "account"}
}
}'
curl -XPUT http://localhost:9200/test/email/1?parent=1 -d '{
"email": "john@smith.com"
}'
curl -XPUT http://localhost:9200/test/email/2?parent=1 -d '{
"email": "admin@mycompany.com"
}'
curl -XPUT http://localhost:9200/test/email/3?parent=1 -d '{
"email": "abcd@efg.com"
}'
curl -XPUT http://localhost:9200/test/email/4?parent=2 -d '{
"email": "peter@peter.com"
}'
curl -XPUT http://localhost:9200/test/email/5?parent=3 -d '{
"email": "andy@yahoo.com"
}'
curl -XPUT http://localhost:9200/test/email/6?parent=3 -d '{
"email": "support@mycompany.com"
}'
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imotov的解决方案对我有用.我已经找到了另一种解决方案是查询accountS表示status = active,再运行一个bool对结果过滤器和使用has_child对孩子的类型和prefix在name内部bool过滤器.
imo*_*tov 21
elasticsearch和关系数据库之间的一个重要区别是elasticsearch无法执行连接.在elasticsearch中,您始终在搜索单个索引或索引联合.但是在父/子关系的情况下,可以使用子索引上的查询来限制父索引中的结果.例如,您可以对account类型执行此查询.
{
"bool": {
"must": [
{
"text" : { "name": "foo" }
}, {
"term" : { "state": "active" }
}, {
"has_child": {
"type": "email",
"query": {
"text": {"email": "bar" }
}
}
}
]
}
}
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此查询将仅返回父文档(不会返回子文档).您可以使用此查询返回的父ID来使用该字段查找此父项的所有子项,该字段_parent默认存储并编制索引.
{
"term" : { "_parent": "1" }
}
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或者,您只能将结果限制为包含bar字段中单词的子项email:
{
"bool": {
"must": [
{
"term" : { "_parent": "1" }
}, {
"text" : { "email": "bar" }
}
]
}
}
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除非您使用_bulk索引,否则我认为不可能在json中指定parent .
这是使用问题中提供的测试数据实现电子邮件查找的方式:
#!/bin/sh
curl -XDELETE 'http://localhost:9200/test' && echo
curl -XPOST 'http://localhost:9200/test' -d '{
"settings" : {
"number_of_shards" : 1,
"number_of_replicas" : 0
},
"mappings" : {
"account" : {
"_source" : { "enabled" : true },
"properties" : {
"name": { "type": "string", "analyzer": "standard" },
"statuses": { "type": "string", "index": "not_analyzed" }
}
},
"email" : {
"_parent" : {
"type" : "account"
},
"properties" : {
"email": { "type": "string", "analyzer": "standard" }
}
}
}
}' && echo
curl -XPUT 'http://localhost:9200/test/account/1' -d '{
"name": "John Smith",
"statuses": "active"
}'
curl -XPUT 'http://localhost:9200/test/account/2' -d '{
"name": "Peter Smith",
"statuses": "active"
}'
curl -XPUT 'http://localhost:9200/test/account/3' -d '{
"name": "Andy Smith",
"statuses": "active"
}'
//Set up mapping for parent/child relationship
curl -XPUT 'http://localhost:9200/test/email/1?parent=1' -d '{
"email": "john@smith.com"
}'
curl -XPUT 'http://localhost:9200/test/email/2?parent=1' -d '{
"email": "admin@mycompany.com"
}'
curl -XPUT 'http://localhost:9200/test/email/3?parent=1' -d '{
"email": "abcd@efg.com"
}'
curl -XPUT 'http://localhost:9200/test/email/4?parent=2' -d '{
"email": "peter@peter.com"
}'
curl -XPUT 'http://localhost:9200/test/email/5?parent=3' -d '{
"email": "andy@yahoo.com"
}'
curl -XPUT 'http://localhost:9200/test/email/6?parent=3' -d '{
"email": "support@mycompany.com"
}'
curl -XPOST 'http://localhost:9200/test/_refresh'
echo
curl 'http://localhost:9200/test/account/_search' -d '{
"query": {
"bool": {
"must": [
{
"term": {
"statuses": "active"
}
}
],
"should": [
{
"prefix": {
"name": "a"
}
},
{
"has_child": {
"type": "email",
"query": {
"prefix": {
"email": "a"
}
}
}
}
],
"minimum_number_should_match" : 1
}
}
}' && echo
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