Mongo query in Spring Boot - spring

Question

Please help me to get the below complex mongo query using mongoTemplate in spring
i would like to retrieve the collection only if "NAME": "UserID1"?
{
"_id": "12345",
"A": [{
"B1": {
"NAME": "test1",
"C1": [{
"D1": [{
"NAME": "UserID1"
},
{
"NAME": "UserID2"
}
]
}]
}
},
{
"B2": {
"NAME": "test2",
"C2": [{
"D2": [{
"NAME": "UserID3"
},
{
"NAME": "UserID4"
}
]
}]
}
}]
}
Thanks.

Answer 1

for example if assume your class like this:
#Document
public class FirstClass{
#Id
String id;
List<SecondClass> A;
public class SecondClass{
string Name;
List<ThirdClass> C1;
}
}
in mongoTemplate:
...
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
...
#Component
public ServiceClass{
private final MongoTemplate mongoTemplate;
ServiceClass(MongoTemplate mongoTemplate){
this.mongoTemplate = mongoTemplate;
}
public List<FirstClass> getResult(String searchInput){
final Criteria criteria =
Criteria.where("A.name").is(searchInput);
List<FirstClass> result = mongoTemplate.find(new Query(criteria),FirstClass.class);
}
}
and you can use spring data mongo query like this:
public interface FirstClassRepository extends MongoRepository<FirstClass, String> {
List<FirstClass> findByA_Name(String name);
}