elasticsearch/docs/reference/scripting-languages/painless/painless-contexts.md

mapped_pages	products
https://www.elastic.co/guide/en/elasticsearch/painless/current/painless-contexts.html	id painless

Painless contexts [painless-contexts]

A Painless script is evaluated within a context. Each context has values that are available as local variables, an allowlist that controls the available classes, and the methods and fields within those classes (API), and if and what type of value is returned.

Painless scripts typically run within one of the contexts in the following table. Before using a Painless context, configure the example data. Each context example is configured to operate on this data.

Name	Painless Documentation	Elasticsearch Documentation
Runtime field	Painless Documentation	Elasticsearch Documentation
Ingest processor	Painless Documentation	Elasticsearch Documentation
Update	Painless Documentation	Elasticsearch Documentation
Update by query	Painless Documentation	Elasticsearch Documentation
Reindex	Painless Documentation	Elasticsearch Documentation
Sort	Painless Documentation	Elasticsearch Documentation
Similarity	Painless Documentation	Elasticsearch Documentation
Weight	Painless Documentation	Elasticsearch Documentation
Score	Painless Documentation	Elasticsearch Documentation
Field	Painless Documentation	Elasticsearch Documentation
Filter	Painless Documentation	Elasticsearch Documentation
Minimum should match	Painless Documentation	Elasticsearch Documentation
Metric aggregation initialization	Painless Documentation	Elasticsearch Documentation
Metric aggregation map	Painless Documentation	Elasticsearch Documentation
Metric aggregation combine	Painless Documentation	Elasticsearch Documentation
Metric aggregation reduce	Painless Documentation	Elasticsearch Documentation
Bucket script aggregation	Painless Documentation	Elasticsearch Documentation
Bucket selector aggregation	Painless Documentation	Elasticsearch Documentation
Watcher condition	Painless Documentation	Elasticsearch Documentation
Watcher transform	Painless Documentation	Elasticsearch Documentation