elasticsearch - parent-child documents relation retrieval -


could me little problem regarding parent-child documents relation?

considering json, have objects, each of them contains array of sub-objects. sub-objects contain text fields. need maintain full-text-search on these objects , construct snippets. need highlighting building snippets. if use nested objects, highlighting not deal them. therefore, use parent-child relationships.

now need retrieve parent-documents, children match query_string. furthermore, need highlighted fields of matched children , associate each one(each child) corresponding parent construct snippets in application.

is possible accomplish goal in 1 query?

i think should consider using children aggregation. can retrieve children items within parents. it's aggregation not able whole document (just id) retrieve relationship... query can document details quickly.

link here : https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-bucket-children-aggregation.html

and more details : https://www.elastic.co/guide/en/elasticsearch/guide/current/children-agg.html


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