在Elasticsearch中创建动态构面

Question

I want to dynamically create facetts for a nested type that has dynamic attributes.

Suppose these articles are in my Index and that I'm searching for name and brand:

{
    name: iPhone 16GB
    brand: Apple
    type: Smartphone
    attributes: {
        Color: White

    }
}
{
    name: iPad
    brand: Apple
    type: Tablet
    attributes: {
        Color: Black
    }
}
{
    name: Cruzer USB 16GB
    brand: SanDisk
    type: USB-Stick
    attributes: {
        Color: Black
        Capacity: 16GB
        USB-Standard: USB 2.0
    }
}
{
    name: Cruzer USB 16GB
    brand: SanDisk
    type: USB-Stick
    attributes: {
        Color: Red
        Capacity: 16GB
        USB-Standard: USB 3.0
    }
}

Now, if I'm searching for 'Apple' I want to have a search result that has the following facets:

Brand:
    Apple 2
Type:
    Smartphone 1
    Tablet 1
Color:
    Black 1
    White 1

A search for '16GB' should include those facets:

Brand:
    Apple 1
    SanDisk 2
Type:
    Smartphone 1
    USB-Stick 2
Color:
    Black 1
    White 1
    Red 1
Capacity:
    16GB 2
USB-Standard: 
    USB 3.0 1
    USB 2.0 2

Likewise, every article can have arbitrary attributes.

The facetted search for brand and type is easy, but how could i do it for the attrubutes? Is this even possible with elasticsearch?

I hope you can unterstand what i mean...

Answer 1

Try with below

POST _search
{
   "query": {
      "query_string": {
         "query": "Apple"
      }
   },
   "facets": {
      "tags": {
         "terms": {
            "fields": ["name","brand","type","attributes.Color"]
         }
      }
   }
}