Elasticsearch and attachment

gistfile1.sh

host="http://localhost:9200"

# Create index
curl -XPUT "$host/docs"

# Define mapping
curl -XPUT "$host/docs/_mapping/doc" -d'
{
    "doc": {
        "properties": {
            "att" : {
                "type": "attachment",
                "fields": {
                    "att": {
                        "index": "analyzed",
                        "store": "no"
                    }
                }
            }
        }
    }
}'

# Store doc with attachment "hello world"
curl -XPUT "$host/docs/doc/1" -d'
{
    "att": "aGVsbG8gd29ybGQ="
}'

# Get doc
curl -XGET "$host/docs/doc/1"

# Received
# ...
#     _source: {
#         att: "aGVsbG8gd29ybGQ="
#     }
# ...

# Expected empty _source
# The same is for e.g. text PDF document - no document metadata is extracted into att field, it always holds the base64-encoded string