ID Field

This field serves as the primary term for the document. All indices are required to have an _ID field, and all documents are required to have a value for this field. When updating a document, the _ID field is used to atomically replace the previous document with the new version.

message Field {
    string name = 1;
    FieldType type = 2;
    bool store = 4;
    bool storeDocValues = 5;
}

• name: Name of the field.

• type: Type of the field. Must be set to BOOLEAN.

• store: Whether the field should be stored in the index. Default is false.

• storeDocValues: Whether the field should be stored in doc values. Default is false.

An _ID field is always searchable.

Either store or storeDocValues must be set to true.

Example

{
    "name": "id_field",
    "type": "_ID",
    "storeDocValues": true
}