Custom Queries are not working in ReactiveCosmosRepository - spring-data-jpa

Question

I have created a cosmos repository by extending ReactiveCosmosRepository.
existing methods like findById, save are working fine for me.
At the same time added methods like findByColumnName(String name) are failing (Without throwing any exception).
<dependency>
<groupId>com.microsoft.azure</groupId>
<artifactId>azure-cosmosdb-spring-boot-starter</artifactId>
<version>2.3.3</version>
</dependency>
<dependency>
<groupId>com.azure</groupId>
<artifactId>azure-spring-data-cosmos</artifactId>
<version>3.0.0-beta.2</version>
</dependency>
<dependency>
<groupId>com.microsoft.azure</groupId>
<artifactId>azure-cosmosdb</artifactId>
<version>2.6.11</version>
</dependency>
Any idea why this is happening?

Answer 1

According to your description, I tried this document to create a spring boot sample and also do it well. And I don't know how you created a method like "findByColumnName(String name)"; I think you can post your method in your question and it will be more straightforward.
From my research, Spring Data Azure Cosmos DB SDK 3.x.x supports #query annotation for defining custom queries! Maybe this document will help you.
Here's my code:
import java.util.List;
import org.springframework.data.repository.query.Param;
import org.springframework.stereotype.Repository;
import com.azure.spring.data.cosmos.repository.Query;
import com.microsoft.azure.spring.data.cosmosdb.repository.CosmosRepository;
#Repository
public interface UserCosmosRepository extends CosmosRepository<User, String> {
#Query(value = "select * from c where c.firstName = #firstName")
List<User> findByFirstName(#Param("firstName") String firstName);
}
import java.util.List;
import java.util.Optional;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.Assert;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
#Service
public class TestService {
private static final Logger LOGGER = LoggerFactory.getLogger(TestService.class);
#Autowired
private UserRepository repository;
#Autowired
private UserCosmosRepository cosmosRepository;
public void run(String... var1) throws Exception {
repository.deleteAll().block();
final User testUser = new User("1", "Tasha", "Calderon", "4567 Main St Buffalo, NY 98052");
LOGGER.info("Saving user: {}", testUser);
// Save the User class to Azure CosmosDB database.
final Mono<User> saveUserMono = repository.save(testUser);
final Flux<User> firstNameUserFlux = repository.findByFirstName("testFirstName");
// Nothing happens until we subscribe to these Monos.
// findById will not return the user as user is not present.
final Mono<User> findByIdMono = repository.findById(testUser.getId());
final User findByIdUser = findByIdMono.block();
Assert.isNull(findByIdUser, "User must be null");
final User savedUser = saveUserMono.block();
Assert.state(savedUser != null, "Saved user must not be null");
Assert.state(savedUser.getFirstName().equals(testUser.getFirstName()), "Saved user first name doesn't match");
LOGGER.info("Saved user");
firstNameUserFlux.collectList().block();
final Optional<User> optionalUserResult = repository.findById(testUser.getId()).blockOptional();
Assert.isTrue(optionalUserResult.isPresent(), "Cannot find user.");
final User result = optionalUserResult.get();
Assert.state(result.getFirstName().equals(testUser.getFirstName()), "query result firstName doesn't match!");
Assert.state(result.getLastName().equals(testUser.getLastName()), "query result lastName doesn't match!");
LOGGER.info("Found user by findById : {}", result);
List<User> a = cosmosRepository.findByFirstName("Tasha");
if(a.size()>0) {
String id = a.get(0).getAddress();
LOGGER.info("Found user by name : {}", id);
}
}
}