我执行查询的JSON如下所示。
如果我只想要使用价格为82.00的对象检索变量（对象数组），那么查询应该是什么。
[
{
"id":"Z2lkOi8vc2hvcGlmeS9Qcm9kdWN0LzIyODA5MjA1MTQ4NQ==",
"createdAt":"2017-10-23T11:05:40Z",
"updatedAt":"2018-03-10T05:24:40Z",
"descriptionHtml":"Et blanditiis autem. Molestiae delectus vero voluptatem libero cum. Aliquam tempore ex id sed aut excepturi facilis sunt.",
"description":"Et blanditiis autem. Molestiae delectus vero voluptatem libero cum. Aliquam tempore ex id sed aut excepturi facilis sunt.",
"handle":"future-proofed-re-engineered-handmade-cotton-chicken",
"productType":"Computers",
"title":"Future-proofed Re-engineered Handmade Cotton Chicken",
"vendor":"Bednar LLC",
"tags":[
{
"value":"data-generator"
}
],
"publishedAt":"2018-03-07T08:25:38Z",
"onlineStoreUrl":null,
"options":[
{
"id":"Z2lkOi8vc2hvcGlmeS9Qcm9kdWN0T3B0aW9uLzM2NTQ0NDI2ODA2MQ==",
"name":"Title",
"values":[
{
"value":"Concrete blue - 71y-9a6"
},
{
"value":"Concrete teal - oxh-g1z"
}
]
}
],
"images":[
],
"variants":[
{
"id":"Z2lkOi8vc2hvcGlmeS9Qcm9kdWN0VmFyaWFudC8zMzczOTAzODcyMDI5",
"title":"Concrete blue - 71y-9a6",
"price":"82.00",
"weight":14,
"available":true,
"sku":"",
"compareAtPrice":null,
"image":null,
"selectedOptions":[
{
"name":"Title",
"value":"Concrete blue - 71y-9a6"
}
],
"product":{
"id":"Z2lkOi8vc2hvcGlmeS9Qcm9kdWN0LzIyODA5MjA1MTQ4NQ==",
"images":[
]
}
},
{
"id":"Z2lkOi8vc2hvcGlmeS9Qcm9kdWN0VmFyaWFudC8zMzczOTA0MDAzMTAx",
"title":"Concrete teal - oxh-g1z",
"price":"196.00",
"weight":7,
"available":true,
"sku":"",
"compareAtPrice":null,
"image":null,
"selectedOptions":[
{
"name":"Title",
"value":"Concrete teal - oxh-g1z"
}
],
"product":{
"id":"Z2lkOi8vc2hvcGlmeS9Qcm9kdWN0LzIyODA5MjA1MTQ4NQ==",
"images":[
]
}
}
]
}
]
我目前正在使用以下方式来索引数据。
var bulkIndex = function bulkIndex(index, type, data) {
let bulkBody = [];
data.forEach(item => {
bulkBody.push({
index: {
_index: index,
_type: type,
_id: item.id
}
});
bulkBody.push(item);
});
esClient.bulk({body: bulkBody})
.then(response => {
let errorCount = 0;
response.items.forEach(item => {
if (item.index && item.index.error) {
console.log(++errorCount, item.index.error);
}
});
console.log(`Successfully indexed ${data.length - errorCount} out of ${data.length} items`);
})
.catch(console.err);
};
创建的映射如下。
{
"shopify": {
"mappings": {
"products": {
"properties": {
"createdAt": {
"type": "date"
},
"description": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"descriptionHtml": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"handle": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"id": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"images": {
"properties": {
"id": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"src": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
}
}
},
"options": {
"properties": {
"id": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"name": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"values": {
"properties": {
"value": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
}
}
}
}
},
"productType": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"publishedAt": {
"type": "date"
},
"tags": {
"properties": {
"value": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
}
}
},
"title": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"updatedAt": {
"type": "date"
},
"variants": {
"properties": {
"available": {
"type": "boolean"
},
"id": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"price": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"product": {
"properties": {
"id": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"images": {
"properties": {
"id": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"src": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
}
}
}
}
},
"selectedOptions": {
"properties": {
"name": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"value": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
}
}
},
"sku": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"title": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"weight": {
"type": "long"
}
}
},
"vendor": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
}
}
}
}
}
}
答案 0 :(得分：2)
根据我的理解，您希望检索包含"82.00"的变体项目的文档，即variant - "Concrete blue - 71y-9a6"而不是"Concrete teal - oxh-g1z"。
在常规情况下，如果您搜索具有变体价格"82.00"的文档，它将查找并返回与variant price匹配的所有文档以及数组中的其他variants项目价格不是"82.00"。
{
"query" : {
"match":{
"variants.price" :"82.00"
}
}
}
//Will return above document with variants items both "Concrete blue - 71y-9a6" and "Concrete teal - oxh-g1z".
但是，如果您只想检索价格为"82.00"的变体商品，则需要能够单独查询该变体商品，解决方案是在您的数据映射中使用nested datatype。
嵌套类型是对象数据类型的专用版本 允许独立于索引和查询对象数组 彼此。
{
"mappings": {
"foo": {
"properties": {
"createdAt": {
"type": "date"
},
"description": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"descriptionHtml": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"handle": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"id": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"options": {
"properties": {
"id": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"name": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"values": {
"properties": {
"value": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
}
}
}
}
},
"productType": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"publishedAt": {
"type": "date"
},
"tags": {
"properties": {
"value": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
}
}
},
"title": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"updatedAt": {
"type": "date"
},
"variants": {
"type": "nested",
"properties": {
"available": {
"type": "boolean"
},
"id": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"price": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"product": {
"properties": {
"id": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
}
}
},
"selectedOptions": {
"properties": {
"name": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"value": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
}
}
},
"sku": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"title": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"weight": {
"type": "long"
}
}
},
"vendor": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
}
}
}
}
}
查询您的文档：
{
"query": {
"nested": {
"path": "variants",
"query": {
"match": {
"variants.price": "82.00"
}
},
"inner_hits": {}
}
}
}
在上述查询中，使用变体价格variants显式查询"82.00"嵌套字段。请注意，inner_hits允许我们突出显示匹配的嵌套文档，因为弹性返回完整文档以及所有变体项，inner_hits将仅包含匹配的变体项（这是我们需要的）。此外，您可以使用_source限制字段投影（例如，您可能不需要变体字段根文档，但只需要inner_hits中的变体项）。
{
"took": 45,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"failed": 0
},
"hits": {
"total": 1,
"max_score": 0.6931472,
"hits": [
{
"_index": "foo",
"_type": "foo",
"_id": "1",
"_score": 0.6931472,
"_source": {
"id": "Z2lkOi8vc2hvcGlmeS9Qcm9kdWN0LzIyODA5MjA1MTQ4NQ==",
"createdAt": "2017-10-23T11:05:40Z",
"updatedAt": "2018-03-10T05:24:40Z",
"descriptionHtml": "Et blanditiis autem. Molestiae delectus vero voluptatem libero cum. Aliquam tempore ex id sed aut excepturi facilis sunt.",
"description": "Et blanditiis autem. Molestiae delectus vero voluptatem libero cum. Aliquam tempore ex id sed aut excepturi facilis sunt.",
"handle": "future-proofed-re-engineered-handmade-cotton-chicken",
"productType": "Computers",
"title": "Future-proofed Re-engineered Handmade Cotton Chicken",
"vendor": "Bednar LLC",
"tags": [
{
"value": "data-generator"
}
],
"publishedAt": "2018-03-07T08:25:38Z",
"onlineStoreUrl": null,
"options": [
{
"id": "Z2lkOi8vc2hvcGlmeS9Qcm9kdWN0T3B0aW9uLzM2NTQ0NDI2ODA2MQ==",
"name": "Title",
"values": [
{
"value": "Concrete blue - 71y-9a6"
},
{
"value": "Concrete teal - oxh-g1z"
}
]
}
],
"images": [],
"variants": [
{
"id": "Z2lkOi8vc2hvcGlmeS9Qcm9kdWN0VmFyaWFudC8zMzczOTAzODcyMDI5",
"title": "Concrete blue - 71y-9a6",
"price": "82.00",
"weight": 14,
"available": true,
"sku": "",
"compareAtPrice": null,
"image": null,
"selectedOptions": [
{
"name": "Title",
"value": "Concrete blue - 71y-9a6"
}
],
"product": {
"id": "Z2lkOi8vc2hvcGlmeS9Qcm9kdWN0LzIyODA5MjA1MTQ4NQ==",
"images": []
}
},
{
"id": "Z2lkOi8vc2hvcGlmeS9Qcm9kdWN0VmFyaWFudC8zMzczOTA0MDAzMTAx",
"title": "Concrete teal - oxh-g1z",
"price": "196.00",
"weight": 7,
"available": true,
"sku": "",
"compareAtPrice": null,
"image": null,
"selectedOptions": [
{
"name": "Title",
"value": "Concrete teal - oxh-g1z"
}
],
"product": {
"id": "Z2lkOi8vc2hvcGlmeS9Qcm9kdWN0LzIyODA5MjA1MTQ4NQ==",
"images": []
}
}
]
},
"inner_hits": {
"variants": {
"hits": {
"total": 1,
"max_score": 0.6931472,
"hits": [
{
"_nested": {
"field": "variants",
"offset": 0
},
"_score": 0.6931472,
"_source": {
"id": "Z2lkOi8vc2hvcGlmeS9Qcm9kdWN0VmFyaWFudC8zMzczOTAzODcyMDI5",
"title": "Concrete blue - 71y-9a6",
"price": "82.00",
"weight": 14,
"available": true,
"sku": "",
"compareAtPrice": null,
"image": null,
"selectedOptions": [
{
"name": "Title",
"value": "Concrete blue - 71y-9a6"
}
],
"product": {
"id": "Z2lkOi8vc2hvcGlmeS9Qcm9kdWN0LzIyODA5MjA1MTQ4NQ==",
"images": []
}
}
}
]
}
}
}
}
]
}
}