Use a Painless script to map values for use in a scripted metric aggregation. A map script is run once per collected document following an optional initialization script and is required as part of a full metric aggregation.
- User-defined parameters passed in as part of the query.
Mapused to add values for processing in a combine script or returned directly.
Contains the fields of the current document where each field is a
- The similarity score of the current document.
Mapto add values for processing in a combine script. Additional values must be of the type
Stringor primitive. If an initialization script is provided as part the aggregation then values added from the initialization script are available as well. If no combine script is specified, values must be directly stored in
_agg. If no combine script and no reduce script are specified, the values are used as the result.
- No expected return value.
The standard Painless API is available.