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elasticsearch - 源过滤ElasticSearch中的对象数组

转载 作者:行者123 更新时间:2023-12-03 01:26:30 26 4
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这是ElasticSearch中的文档

"CompanyId": 5733,
"PartNumber": "W8S038",
"Name_en": "#8 Washer, M4 Compatible, Stainless Steel, Pack of 100",
"ProductId": 90023,
"CompanyName": "Washers Ltd",
"Prices": [

{
"BuyerId": 308,
"Price": 2.42
}
,
{
"BuyerId": 406,
"Price": 2.22
}
]
}

显然,我们不能让购买者308认为购买者406的价格更高。因此,当买家308正在搜索时,我需要删除其他买家的所有价格。

我想通过使用源过滤来做到这一点。但是如何?

(我可以排除 Prices并通过使用 script_field重新添加所需的价格。但是,这意味着价格不是源文档的一部分,因此ReactiveSearch看不到它,因此无法对其进行排序。)

更新:这是ReactiveSearch生成的查询,我需要在该查询上附加价格限制:
   "query":{
"bool":{
"must":[
{
"bool":{
"must":[
{
"bool":{
"must":[
{
"bool":{
"should":[
{
"multi_match":{
"query":"m4 washer",
"fields":[
"Name_en"
],
"type":"cross_fields",
"operator":"and"
}
},
{
"multi_match":{
"query":"m4 washer",
"fields":[
"Name_en"
],
"type":"phrase_prefix",
"operator":"and"
}
}
],
"minimum_should_match":"1"
}
}
]
}
}
]
}
}
],
"filter": [
{
"nested": {
"path": "Prices",
"query": {
"term": {
"Prices.CompanyId": 1474
}
},
"inner_hits": {}
}
}
]
}
},
"size":10,
"aggs":{
"CompanyName.raw":{
"terms":{
"field":"CompanyName.raw",
"size":1000,
"order":{
"_count":"desc"
}
}
}
},
"_source":{
"excludes":[
"PurchasingViews",
"ContractFilters",
"SearchField*",
"Keywords*",
"Menus*"
]
},
"from":0,
"sort":[
{
"Name_en.raw":{
"order":"asc"
}
}
],
"script_fields":{
"price":{
"script":{
"lang":"painless",
"inline":"if(params['_source']['Prices'] != null){for(p in params['_source']['Prices']){ if(p.CompanyId == 1474) return p.Price; }} return null;"
}
}
}
}

(那个 bool, must, bool, must, bool, must, bool, should看起来很愚蠢?)

最佳答案

您需要使用nested inner_hits 功能,如下所示。

{
"_source": [
"CompanyId", "PartNumber", "Name_en", "ProductId", "CompanyName"
],
"query": {
"bool": {
"filter": [
{
"nested": {
"path": "Prices",
"query": {
"term": {
"Prices.BuyerId": 308
}
},
"inner_hits": {}
}
}
]
}
}
}

在输出中,您将确切地得到期望的结果,即所有根级别字段和给定买方的匹配价格。

更新:

这是我重写查询的方式:
{
"query": {
"bool": {
"minimum_should_match": "1",
"should": [
{
"multi_match": {
"query": "m4 washer",
"fields": [
"Name_en"
],
"type": "cross_fields",
"operator": "and"
}
},
{
"multi_match": {
"query": "m4 washer",
"fields": [
"Name_en"
],
"type": "phrase_prefix",
"operator": "and"
}
}
],
"filter": [
{
"nested": {
"path": "Prices",
"query": {
"term": {
"Prices.CompanyId": 1474
}
},
"inner_hits": {}
}
}
]
}
},
"size": 10,
"aggs": {
"CompanyName.raw": {
"terms": {
"field": "CompanyName.raw",
"size": 1000,
"order": {
"_count": "desc"
}
}
}
},
"_source": {
"excludes": [
"PurchasingViews",
"ContractFilters",
"SearchField*",
"Keywords*",
"Menus*",
"Prices"
]
},
"from": 0,
"sort": [
{
"Name_en.raw": {
"order": "asc"
}
}
],
"script_fields": {
"price": {
"script": {
"lang": "painless",
"inline": "if(params['_source']['Prices'] != null){for(p in params['_source']['Prices']){ if(p.CompanyId == 1474) return p.Price; }} return null;"
}
}
}
}

关于elasticsearch - 源过滤ElasticSearch中的对象数组,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/58079723/

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