Spring Data JPA MongoDB Expressions

How it works:

Customize JPA Repository base class:

@SpringBootApplication
@EnableJpaRepositories(repositoryBaseClass = ExpressionsRepositoryImpl.class)
public class Application { … }

Change your repository to extend ExpressionsRepository:

@Repository
public interface EmployeeRepository extends ExpressionsRepository<Employee, Long> {
}

Build the controller/service:

@PostMapping("/search")
public ResponseEntity<Page<EmployeeDto>> search(@RequestBody Expressions expressions, Pageable pageable) {

    return ok().body(
                employeeRepository.findAll(expressions, pageable).map(employeeMapper::toDto)
        );
}

Send Mongodb query in JSON from frontend:

{
  "$or": [
    {"lastName": "ibrahim"},
    {
      "$and": [
        {"firstName": "mostafa"},
        {"birthDate": {"$gt": "1990-01-01"}}
      ]
    }
  ]
}

Learn more

For a quick start see this Medium post or dev.to post or see this demo example on Github.

See documentation website for details about how to get started.

Install:

For spring-boot 3.x:

<dependency>
  <groupId>com.github.mhewedy</groupId>
  <artifactId>spring-data-jpa-mongodb-expressions</artifactId>
  <version>0.1.3</version>
</dependency>

For spring-boot 2.x:

<dependency>
  <groupId>com.github.mhewedy</groupId>
  <artifactId>spring-data-jpa-mongodb-expressions</artifactId>
  <version>0.0.8</version>
</dependency>

🎖 Special Thanks

Special thanks to Rashad Saif and Hamada Elnoby for helping in the design, inspring with ideas, and for doing code review.

In the News