How to query jsonb datatype (Postgresql) in java code using Spring webflux & R2dbc - spring-boot

Question

I have postgresql db with below structure
CREATE TABLE products (
id bigserial,
name varchar(30) NOT NULL,
owner_id bigint,
pdata jsonb NOT NULL,
PRIMARY KEY (id)
);
Here pdata is of jsonb datType
exmaple of pdata(jsonb dataType)
"facility": {
"parent": {
"type": "City"
},
"facilityId": "Z00TRIZR6KAQ6"
}
}
I
I run the below query from PGadmin it works fine. I get the desirable result
from techwriting.products
where pdata ->'facility' ->'parent'->>'type'='City'
and pdata ->'facility' ->>'facilityId'='Z00TRIZR6KAQ6';
Basically above query is checking various attributes in jsonb value and giving the result.
I am running the same query in java code using spring webflux and R2dbc. I am able to get the same response in java.
Model class
#Builder
#NoArgsConstructor
#AllArgsConstructor
#Table("products")
public class Product {
#Id
private Long id;
private String name;
private String pdata;
#Column("owner_id")
private long ownerId;
}
Repository class
import com.maersk.jsonb.model.Product;
import org.springframework.data.r2dbc.repository.Query;
import org.springframework.data.repository.reactive.ReactiveCrudRepository;
import reactor.core.publisher.Flux;
public interface ProductRepository extends ReactiveCrudRepository<Product, Long> {
#Query(value="select * from techwriting.products where pdata ->'facility' ->'parent'->>'type'='City' and pdata ->'facility' ->>'facilityId'='Z00TRIZR6KAQ6'")
Flux<Product> findAllByName();
}
Response: We are getting below response. Response is correct with same no of records .
[
{
"id": 1,
"name": "xyz",
"pdata": "{\"facility\": {\"parent\": {\"type\": \"BBSR\"}, \"facilityId\": \"Z00TRIZR6KAQ6\"}}",
"ownerId": 2
}
]
My Question are:
In repository class #Query contains all hardcoded value. How to do them dynamically?
Response contains pdata as String. However json data stored in postgresql and what I am getting the structure is different.
pdata(jsonb type) in postgresql:
{
"facility": {
"parent": {
"type": "BBSR"
},
"facilityId": "Z00TRIZR6KAQ6"
}
}
getting in response:
"{\"facility\": {\"parent\": {\"type\": \"BBSR\"}, \"facilityId\": \"Z00TRIZR6KAQ6\"}}"
How can we convert String to as stored in db as shown above?

Answer 1

My answer to Q1.
#Query(value="select * from techwriting.products where pdata ->'facility' ->'parent'->>'type'=$1 and pdata ->'facility' ->>'facilityId'=$2")
Flux<Product> findAllByfacilityIdandtype(String type, String facilityId);