Spring Boot & MongoDB, Query nested map for key - json

Question

I'm trying to query MongoDB for all documents that have a specific key inside a document's nested map
{
"_id" : ObjectId("5a5cd9711736c32c45f11adf"),
"name" : "Test A",
"userSubscription" : {
"map" : {
"1234" : true,
"999" : true,
}
}
}
I'm querying as follows:
db.getCollection('myColl').find( { "userSubscription.map" : {"1234":true }})
It's working, but, it return only documents that holds a single value of "1234", So if "userSubscription.map" contains "1234" and "5555" the query not showing any results.
I'm using Robo3T to test queries, and SpringBoot annotations to query this,
Can the answer be in Spring Boot annotation query?
Spring Boot query example:
#Query("{QUERY : ?0}")
List<Person> findByUserSubscription(String key);
** The "?0" is to use the first method param
Thanks!!!
UPDATE:
Now the document looks like this:
{
"_id" : ObjectId("5a5cd9711736c32c45f11adf"),
"name" : "Test A",
"userSubscription" : {
"1234" : true,
"3333" : true
}
}
Robo 3T Query: db.getCollection('Person').find({ "userSubscription.1234": {$exists : true} })
Works PERFECT!
But, The query in Spring boot looks like:
#Query("{userSubscription.?0 : {$exists: true} }")
and it doesn't show any results...
What is the problem???

Answer 1

Model the map as array of embedded documents like
{
"map" : [
{k: "1234", v: true},
{k: "999", v: true}
]
}
and you can find by key
db.myColl.find({"userSubscription.map":{$elemMatch: { k: "1234", v: true } } })
and
#Query("{'userSubscription.map':{$elemMatch: { k: ?0, v: true } } }")
List<Person> findByUserSubscription(String key);
`

Answer 2

there is a more simple solution with using Query and Criteria Class in Spring Data mongodb. like below:
Query query = new Query();
query.addCriteria(Criteria.where("userSubscription."+key).exists(true));
return mongoTemplate.find(query, YourDocument.class);

Answer 3

You missed single quote for #Query.
#Query("{'userSubscription.?0' : {$exists: true} }")