- Painless Scripting Language: other versions:
- Painless Guide
- Painless Language Specification
- Painless contexts
- Context examples
- Ingest processor context
- Update context
- Update by query context
- Reindex context
- Sort context
- Similarity context
- Weight context
- Score context
- Field context
- Filter context
- Minimum should match context
- Metric aggregation initialization context
- Metric aggregation map context
- Metric aggregation combine context
- Metric aggregation reduce context
- Bucket script aggregation context
- Bucket selector aggregation context
- Analysis Predicate Context
- Watcher condition context
- Watcher transform context
- Painless API Reference
IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Metric aggregation combine context
editMetric aggregation combine context
editUse a Painless script to combine values for use in a scripted metric aggregation. A combine script is run once per shard following a map script and is optional as part of a full metric aggregation.
Variables
-
params(Map, read-only) - User-defined parameters passed in as part of the query.
-
state(Map) -
Mapwith values available from the prior map script.
Return
-
List,Map,String, or primitive - A value collected for use in a reduce script. If no reduce script is specified, the value is used as part of the result.
API
The standard Painless API is available.
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