painless-reindex-context.asciidoc

Reindex context

Use a Painless script in a {ref}/docs-reindex.html[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.

{ref}/mapping-routing-field.html[ctx['_routing']] (String)

The value used to select a shard for document storage.

{ref}/mapping-index-field.html[ctx['_index']] (String)

The name of the index.

{ref}/mapping-id-field.html[ctx['_id']] (String)

The unique document id.

ctx['_version'] (int)

The current version of the document.

{ref}/mapping-source-field.html[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.

{ref}/mapping-routing-field.html[ctx['_routing']]

Modify this to change the routing value for the current document.

{ref}/mapping-index-field.html[ctx['_index']]

Modify this to change the destination index for the current document.

{ref}/mapping-id-field.html[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.

{ref}/mapping-source-field.html[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.