Demonstrate that `store`'d fields with `index_name` in their mapping loaded using `fields` are returned in `hits` objects keyed by their `index_name` (e.g., "name_string", not "name" in this example).

index_name_fields_loader_test.sh

#!/bin/sh

# Overall purpose of index_name usage here is to work around bug https://github.com/elasticsearch/elasticsearch/issues/5851

echo "Remove old index..."
curl -XDELETE "http://localhost:9200/fml?pretty=true"

echo "Make index and add some data..."

curl -XPOST "http://localhost:9200/fml/"

curl -XPUT "http://localhost:9200/fml/_mapping/widget" -d '
{
    "widget": {
        "properties": {
           "name": {
              "type": "string",
              "store": true,
              "index_name": "name_string"
           },
           "id": {
              "type": "string",
              "store": true
           },
           "postDate": {
              "type": "date",
              "index_name": "postDate_date"
           }
        }
    }
}
'

echo "Verify mappings..."
curl 'localhost:9200/fml/_mapping?pretty'

echo "Make index and add some data - default mappings are fine"
curl -XPOST "http://localhost:9200/fml/widget/?pretty=true" -d '
{
   "name": "uno",
   "id": "1",
   "postDate" : "2009-11-15"
}
'
curl -XPOST "http://localhost:9200/fml/widget/?pretty=true" -d '
{
   "name": "dos",
   "id": "2",
   "postDate" : "2010-11-15"
}
'

echo "Wait for ES to be synced (aka refresh indices)..."
curl -XPOST "http://localhost:9200/fml/_refresh?pretty=true"


echo "name_string!? (note postDate not stored, so parsed from _source and index_name not used)"
curl -XPOST "http://localhost:9200/fml/widget/_search?pretty=true" -d '
{
  "query": {
    "match_all" : { }
  },
  "fields": ["name", "id", "postDate"]
}
'