[英]Elasticsearch: filter documents by array passed in request contains all document array elements
我存儲在 elasticsearch 中的文檔具有以下結構:
{
"id": 1,
"test": "name",
"rules": [
{
"id": 2,
"name": "rule1",
"ruleDetails": [
{
"id": 3,
"requiredAnswerId": 1
},
{
"id": 4,
"requiredAnswerId": 2
},
{
"id": 5,
"requiredAnswerId": 3
}
]
}
]
}
其中, rules
屬性具有nested
類型。
我需要通過檢查在搜索請求中傳遞的requiredAnswerId
數組(提供的術語)包含存儲在文檔中的所有rules.ruleDetails.requiredAnswerId
來查詢文檔。
有誰知道我可以使用哪個 elasticsearch 選項來構建這樣的特定查詢? 或者,最好獲取整個文檔並在應用程序級別執行過濾。
更新添加映射
{
"my_index": {
"mappings": {
"properties": {
"id": {
"type": "long"
},
"test": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword"
}
}
},
"rules": {
"type": "nested",
"properties": {
"id": {
"type": "long"
},
"name": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"ruleDetails": {
"properties": {
"id": {
"type": "long"
},
"requiredAnswerId": {
"type": "long"
}
}
}
}
}
}
}
}
}
映射:
{
"index4" : {
"mappings" : {
"properties" : {
"id" : {
"type" : "integer"
},
"rules" : {
"type" : "nested",
"properties" : {
"id" : {
"type" : "integer"
},
"name" : {
"type" : "text",
"fields" : {
"keyword" : {
"type" : "keyword"
}
}
},
"ruleDetails" : {
"properties" : {
"id" : {
"type" : "long"
},
"requiredAnswerId" : {
"type" : "long"
}
}
}
}
},
"test" : {
"type" : "text",
"fields" : {
"keyword" : {
"type" : "keyword"
}
}
}
}
}
}
}
查詢:這將需要使用從性能角度來看不好的腳本。 我正在遍歷所有文檔並檢查是否存在字段是否傳遞參數
{
"query": {
"nested": {
"path": "rules",
"query": {
"script": {
"script": {
"source": "for(a in doc['rules.ruleDetails.requiredAnswerId']){if(!params.Ids.contains((int)a)) return false; } return true;",
"params": {
"Ids": [
1,
2,
3
]
}
}
}
},
"inner_hits": {}
}
}
}
結果:
"hits" : [
{
"_index" : "index4",
"_type" : "_doc",
"_id" : "TxOpvnEBf42mOjxvvLQB",
"_score" : 4.0,
"_source" : {
"id" : 1,
"test" : "name",
"rules" : [
{
"id" : 2,
"name" : "rule1",
"ruleDetails" : [
{
"id" : 3,
"requiredAnswerId" : 1
},
{
"id" : 4,
"requiredAnswerId" : 2
},
{
"id" : 5,
"requiredAnswerId" : 3
}
]
},
{
"id" : 3,
"name" : "rule3",
"ruleDetails" : [
{
"id" : 3,
"requiredAnswerId" : 1
},
{
"id" : 4,
"requiredAnswerId" : 2
}
]
}
]
},
"inner_hits" : {
"rules" : {
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 4.0,
"hits" : [
{
"_index" : "index4",
"_type" : "_doc",
"_id" : "TxOpvnEBf42mOjxvvLQB",
"_nested" : {
"field" : "rules",
"offset" : 0
},
"_score" : 4.0,
"_source" : {
"id" : 2,
"name" : "rule1",
"ruleDetails" : [
{
"id" : 3,
"requiredAnswerId" : 1
},
{
"id" : 4,
"requiredAnswerId" : 2
},
{
"id" : 5,
"requiredAnswerId" : 3
}
]
}
}
]
}
}
}
}
]
編輯 1
terms_set可以用作替代方案。 與腳本查詢相比會更快
返回在提供的字段中包含最少數量的確切術語的文檔。
minimum_should_match_script- 數組大小可用於匹配傳遞值的最小數量。
詢問:
{
"query": {
"nested": {
"path": "rules",
"query": {
"bool": {
"filter": {
"terms_set": {
"rules.ruleDetails.requiredAnswerId": {
"terms": [
1,
2,
3
],
"minimum_should_match_script": {
"source": "doc['rules.ruleDetails.requiredAnswerId'].size()"
}
}
}
}
}
},
"inner_hits": {}
}
}
}
在玩了一段時間 ES 並閱讀了它的文檔后,我發現你應該記住,提供的script
應該被編譯並應用於文檔,因此如果你只知道應該提前匹配的所需數字元素,它會更慢.
因此,我創建了一個單獨的字段requiredMatches
來存儲每個文檔的rules.ruleDetails.requiredAnswerId
元素的數量,並在索引文檔之前計算它。 然后,我沒有在搜索查詢中使用minimum_should_match_script
,而是使用minimum_should_match_field
:
{
"query": {
"nested": {
"path": "rules",
"query": {
"bool": {
"filter": {
"terms_set": {
"rules.ruleDetails.requiredAnswerId": {
"terms": [
1,
2,
3
],
"minimum_should_match_field": "requiredMatches"
}
}
}
}
},
"inner_hits": {}
}
}
}
我使用以下示例作為參考
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