In my dataset, a document contains 20+ fields with nested objects. Most of them are long text fields. These fields are important for full-text search but we only need to show the title, short-description and Id in output.
Is it possible to specify the output fields in ElasticSearch for a full text query? (like projection in MongoDB)
I think you're looking for the fields
property of a search request:
Allows to selectively load specific fields for each document represented by a search hit. Defaults to load the internal
_source
field.{ "fields" : ["user", "postDate"], "query" : { "term" : { "user" : "kimchy" } } }
The fields will automatically load stored fields (store mapping set to yes), or, if not stored, will load the
_source
and extract it from it (allowing to return nested document object).
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