31 lines
774 B
Plaintext
31 lines
774 B
Plaintext
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[[mapping-meta-field]]
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=== `_meta` field
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Each mapping type can have custom meta data associated with it. These are not
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used at all by Elasticsearch, but can be used to store application-specific
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metadata, such as the class that a document belongs to:
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[source,js]
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--------------------------------------------------
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PUT my_index
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{
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"mappings": {
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"user": {
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"_meta": { <1>
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"class": "MyApp::User",
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"version": {
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"min": "1.0",
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"max": "1.3"
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}
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}
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}
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}
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}
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--------------------------------------------------
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// AUTOSENSE
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<1> This `_meta` info can be retrieved with the
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<<indices-get-mapping,GET mapping>> API.
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The `_meta` field can be updated on an existing type using the
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<<indices-put-mapping,PUT mapping>> API.
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