mirror of
https://github.com/elastic/elasticsearch.git
synced 2025-04-24 23:27:25 -04:00
5c75d004fa
Co-authored-by: debadair <debadair@elastic.co> Co-authored-by: Lisa Cawley <lcawley@elastic.co> Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>
43 lines
1,021 B
Text
43 lines
1,021 B
Text
[[mapping-meta-field]]
|
|
=== `_meta` field
|
|
|
|
A mapping type can have custom meta data associated with it. These are not
|
|
used at all by Elasticsearch, but can be used to store application-specific
|
|
metadata, such as the class that a document belongs to:
|
|
|
|
[source,console]
|
|
--------------------------------------------------
|
|
PUT my-index-000001
|
|
{
|
|
"mappings": {
|
|
"_meta": { <1>
|
|
"class": "MyApp::User",
|
|
"version": {
|
|
"min": "1.0",
|
|
"max": "1.3"
|
|
}
|
|
}
|
|
}
|
|
}
|
|
--------------------------------------------------
|
|
|
|
<1> This `_meta` info can be retrieved with the
|
|
<<indices-get-mapping,GET mapping>> API.
|
|
|
|
The `_meta` field can be updated on an existing type using the
|
|
<<indices-put-mapping,update mapping>> API:
|
|
|
|
[source,console]
|
|
--------------------------------------------------
|
|
PUT my-index-000001/_mapping
|
|
{
|
|
"_meta": {
|
|
"class": "MyApp2::User3",
|
|
"version": {
|
|
"min": "1.3",
|
|
"max": "1.5"
|
|
}
|
|
}
|
|
}
|
|
--------------------------------------------------
|
|
// TEST[continued]
|