ElasticSearch Cookbook - Second Edition

Using a has_parent query/filter

In the previous recipes, we have seen the has_child query. ElasticSearch provides a query to search child documents based on the parent query: the has_parent query.

Getting ready

You need a working ElasticSearch cluster and an index populated with the script chapter_05/populate_query.sh, available in the code bundle for this book.

How to do it...

In order to execute the has_parent query/filter, perform the following steps:

1. Search for the test-type2 children of which the test-type parents have a term joe in the parsedtext field. Create the query as follows:

   curl -XPOST 'http://127.0.0.1:9200/test-index/test-type2/_search?pretty=true' -d '{
     "query": {
       "has_parent" : {
         "type" : "test-type",
         "query" : {
           "term" : {