Elasticsearch field collapsing example

field-collapsing.txt

DELETE shop
PUT shop
{
  "settings": {
    "number_of_shards": 1,
    "number_of_replicas": 0
  },
  "mappings": {
    "product": {
      "properties": {
        "title": {
          "type": "text"
        },
        "colour": {
          "type": "keyword"
        },
        "brand": {
          "type": "text"
        },
        "size": {
          "type": "text"
        },
        "price": {
          "type": "double"
        },
        "family_id": {
          "type": "keyword"
        }
      }
    }
  }
}

POST shop/product/1
{
  "title": "iPad Air 2",
  "colour": "Silver",
  "brand": "Apple",
  "size": "32gb",
  "price": 399,
  "family_id": "apple-1234"
}

POST shop/product/2
{
  "title": "iPad Air 2",
  "colour": "Gold",
  "brand": "Apple",
  "size": "32gb",
  "price": 399,
  "family_id": "apple-1234"
}

POST shop/product/3
{
  "title": "iPad Air 2",
  "colour": "Space Grey",
  "brand": "Apple",
  "size": "32gb",
  "price": 399,
  "family_id": "apple-1234"
}

POST shop/product/4
{
  "title": "iPad Air 2",
  "colour": "Space Grey",
  "brand": "Apple",
  "size": "128gb",
  "price": 499,
  "family_id": "apple-1234"
}

POST shop/product/5
{
  "title": "iPad Pro",
  "colour": "Space Grey",
  "brand": "Apple",
  "size": "128gb",
  "price": 899,
  "family_id": "apple-5678"
}

POST shop/product/6
{
  "title": "iPad Pro",
  "colour": "Space Grey",
  "brand": "Apple",
  "size": "256gb",
  "price": 999,
  "family_id": "apple-5678"
}