Elassandra: UDT List Match Query- No Results - elasticsearch

Question

I am using Elassandra. In Cassandra, I have a UDT:
CREATE TYPE test.entity_attributes (
attribute_key text,
attribute_value text
);
It is used in table
CREATE TABLE test.attributes_test (
id text PRIMARY KEY,
attr list<frozen<entity_attributes>>
)
I mapped the attributes_test using:
curl --location --request PUT 'localhost:9200/attr_index' \
--header 'Content-Type: application/json' \
--data-raw '{
"settings": { "keyspace": "test" },
"mappings": {
"attributes_test" : {
"discover":".*"
}
}
}'
(copied from postman)
It returns the following as mapping:
{
"attr_index": {
"aliases": {},
"mappings": {
"attributes_test": {
"properties": {
"attr": {
"type": "nested",
"cql_udt_name": "entity_attributes",
"properties": {
"attribute_key": {
"type": "keyword",
"cql_collection": "singleton"
},
"attribute_value": {
"type": "keyword",
"cql_collection": "singleton"
}
}
},
"id": {
"type": "keyword",
"cql_collection": "singleton",
"cql_partition_key": true,
"cql_primary_key_order": 0
}
}
}
},
"settings": {
"index": {
"keyspace": "test",
"number_of_shards": "1",
"provided_name": "attr_index",
"creation_date": "1615291749532",
"number_of_replicas": "0",
"uuid": "Oua1ACLbRvCATC-kcGPoQg",
"version": {
"created": "6020399"
}
}
}
}
}
This is what I have in the table:
id | attr
----+----------------------------------------------------------------------------------------------
2 | [{attribute_key: 'abc', attribute_value: '2'}, {attribute_key: 'def', attribute_value: '1'}]
1 | [{attribute_key: 'abc', attribute_value: '1'}]
The problem now is, when I run the following query, it does not return any result.
curl --location --request POST 'localhost:9200/attr_index/_search' \
--header 'Content-Type: application/json' \
--data-raw '{
"query": {
"match": {
"attr.attribute_key": "abc"
}
}
}'
https://www.elastic.co/guide/en/elasticsearch/reference/current/nested.html - describes the way to search in nested objects.
How can I search in the list of nested objects?

Answer 1

It was a mistake in my query. The correct query would be:
{
"query": {
"nested": {
"path": "attr",
"query": {
"match": {
"attr.attribute_key": "abc"
}
}
}
}
}