我的文档结构如下:
{
"title" : "A title",
"ExtraFields": [
{
"value": "print",
"fieldID": "5535627631efa0843554b0ea"
}
,
{
"value": "POLYE",
"fieldID": "5535627631efa0843554b0ec"
}
,
{
"value": "30",
"fieldID": "5535627631efa0843554b0ed"
}
,
{
"value": "0",
"fieldID": "5535627631efa0843554b0ee"
}
,
{
"value": "0",
"fieldID": "5535627731efa0843554b0ef"
}
,
{
"value": "0.42",
"fieldID": "5535627831efa0843554b0f0"
}
,
{
"value": "40",
"fieldID": "5535627831efa0843554b0f1"
}
,
{
"value": "30",
"fieldID": "5535627831efa0843554b0f2"
}
,
{
"value": "18",
"fieldID": "5535627831efa0843554b0f3"
}
,
{
"value": "24",
"fieldID": "5535627831efa0843554b0f4"
}
]
}
理想的输出是(最佳情况):
[
{
"field" : "5535627831efa0843554b0f4",
"values" : [
{
"label" : "24",
"count" : 2
},
{
"label" : "18",
"count" : 5
}
]
},
{
"field" : "5535627831efa0843554b0f3",
"values" : [
{
"label" : "cott",
"count" : 20
},
{
"label" : "polye",
"count" : 12
}
]
}
]
但是我也可以用更简单的一个(这就是我现在在mongodb中得到它):
[
{
"field" : "5535627831efa0843554b0f4",
"value" : "24",
"count" : 2
},
{
"field" : "5535627831efa0843554b0f4",
"value" : "18",
"count" : 5
},
{
"field" : "5535627831efa0843554b0f3",
"value" : "cott",
"count" : 20
},
{
"field" : "5535627831efa0843554b0f3",
"value" : "polye",
"count" : 12
}
]
聚合查询如何?这个结构有什么特殊的映射吗?
答案 0 :(得分:1)
为了获得您想要的内容,您需要nested
子结构的ExtraFields
映射。您的文档映射看起来像这样(doctype
是我选择命名您的文档类型的术语,但它可以是您现在拥有的任何内容):
PUT /test/_mapping/doctype
{
"doctype": {
"properties": {
"title": {
"type": "string"
},
"ExtraFields": {
"type": "nested",
"properties": {
"value": {
"type": "string",
"index": "not_analyzed"
},
"fieldID": {
"type": "string",
"index": "not_analyzed"
}
}
}
}
}
}
然后,您可以索引文档
PUT /test/doctype/123
{
"title" : "A title",
"ExtraFields": [
...
]
}
并发送以下聚合查询:
POST /test/doctype/_search
{
"size": 0,
"aggs": {
"fields": {
"nested": {
"path": "ExtraFields"
},
"aggs": {
"fields": {
"terms": {
"field": "ExtraFields.fieldID"
},
"aggs": {
"values": {
"terms": {
"field": "ExtraFields.value"
}
}
}
}
}
}
}
}
这将产生您在最佳情况下突出显示的结果,尽管响应中的JSON字段名称命名有点不同,但我想它没问题。
尝试一下,让我们知道。