elasticsearch/docs/reference/scripting-languages/painless/painless-reindex-context.md

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mapped_pages:

• https://www.elastic.co/guide/en/elasticsearch/painless/current/painless-reindex-context.html products:
• id: painless ---

Reindex context [painless-reindex-context]

Use a Painless script in a reindex operation to add, modify, or delete fields within each document in an original index as its reindexed into a target index.

Variables

params (Map, read-only) : User-defined parameters passed in as part of the query.

ctx['op'] (String) : The name of the operation.

ctx['_routing'] (String) : The value used to select a shard for document storage.

ctx['_index'] (String) : The name of the index.

ctx['_id'] (String) : The unique document id.

ctx['_version'] (int) : The current version of the document.

ctx['_source'] (Map) : Contains extracted JSON in a Map and List structure for the fields existing in a stored document.

Side Effects

ctx['op'] : Use the default of index to update a document. Set to noop to specify no operation or delete to delete the current document from the index.

ctx['_routing'] : Modify this to change the routing value for the current document.

ctx['_index'] : Modify this to change the destination index for the current document.

ctx['_id'] : Modify this to change the id for the current document.

ctx['_version'] (int) : Modify this to modify the version for the current document.

ctx['_source'] : Modify the values in the Map/List structure to add, modify, or delete the fields of a document.

Return

void : No expected return value.

API

The standard Painless API is available.